Learn about the GrabCAD Platform
Get to know GrabCAD as an open software platform for Additive Manufacturing
Visit our new homepage
Show off your skills and solve real design problems
A robotics company has a project to design a robot that can pick up and analyze meteors. One of the critical design criteria is to minimize the weight of the robot. Your job is to redesign the robot’s gripper arm to reduce its weight while maintaining design requirements listed below.
Design a new arm built to fit on existing equipment using the requirements shown below or modify the provided GrabCAD Arm.stp file keeping the location and size of the critical faces shown in red in the following image.
This arm needs to be optimized to reduce its mass while being able to withstand 20,000 Newtons of resistance applied to the gripping surface with a deformation no greater than 8mm and a safety factor of 3 or greater.
View the example video GrabCAD Tutorial.mp4 to see a simulation and edit of the model in SIM 360. You can download video and additional files under 'Download specification' button below.
Finally post the design back to GrabCAD for comments and review.
NOTE: Use your favorite CAD tool to design the arm as many different CAD file types can be imported into SIM 360.
Use Autodesk SIM 360 to optimize a retrieval gripper arm.
You must acquire a license of Autodesk SIM 360. Students can access the software through the Autodesk Education Community and non-students can access a 90 day trial HERE
Design a new arm or modify the provided step file.
Use of Autodesk SIM 360 to optimize the design.
Must submit a report from Autodesk SIM 360 HTML format and CAD file of the design.
The competition is open to everyone. Multiple entries are acceptable. Team entries are welcome - prize will be transferred to team leader.
Tag your entry with “designslam” when uploading to GrabCAD. If you submit through the "Submit entry" button, this should be added automatically. Only entries with valid tag will participate. Only entries uploaded to GrabCAD through the "Submit entry" button on this Challenge page will be considered an entry.
By entering this competition, you 1. Warrant that the work is your original work. 2. To the best of your knowledge, it is not, and has not been in production or otherwise previously published or exhibited. 3. Neither the work nor its use infringes the intellectual property rights (whether a patent, utility model, functional design right, aesthetic design right, trade mark, copyright or any other intellectual property right) of any other person.
-----------------------------------------------
If you think an entry may infringe on existing copyrighted materials, please email challenges@grabcad.com.
Applicants are not entitled to any compensation or reimbursement for any costs. The applicant’s participation shall not constitute employment, assignment or offer of employment or assignment.
The sum of the Awards is the total gross amount of the reward. The awarded participant is solely liable for the payment of all taxes, duties and other similar measures if imposed on the reward pursuant to the legislation of the country of his/her residence, domicile, citizenship, workplace, or any other criterion of similar nature.
We will release the finalists before the final announcement to give the Community an opportunity to "vote" for their favorites in the comments. The jury will take these into consideration when picking the final winner. This new addition is based on feedback from you!
Winning designs will be chosen based on the rules and requirements. This Challenge starts on September 6, 2013 and ends on October 6, 2013 (11:59pm UTC). Winners will be announced by November 6, 2013.
Void where prohibited.
iPad Mini + GrabCAD bottle + notebook
$500 + GrabCAD bottle + notebook
$250 + GrabCAD bottle + notebook
GrabCAD bottle + notebook
The jury will be comprised of Autodesk and GrabCAD experts.
Autodesk helps people imagine, design and create a better world. Everyone—from design professionals, engineers and architects to digital artists, students and hobbyists—uses Autodesk software to unlock their creativity and solve important challenges.
For more information visit Autodesk or follow @autodeskedu
Victoria Anderson
Thom Tremblay
Dan Banach
Kaspar KiisHave an awesome idea for this competition? Want to win cool prizes? Sign-up now to upload your entries.
If you don't receive the email within an hour (and you've checked your Spam folder), email us as confirmation@grabcad.com.
91 comments
Fahad Rafi Butt over 10 years ago
must use of Sim 360 is hurtful, how much GB is it?
Fahad Rafi Butt over 10 years ago
GE challenge was easier in this regard, but this is easy in simulation,
Abhijeet over 10 years ago
Limiting software use to SIM 360 only is affecting. I do not have a 64bit sys and that simply means I cant use it for simulation.
Ioannis Skarlatakis over 10 years ago
@Abhijeet Hi there, I literally cannot see any limitation in this challenge as the Sim-360 is available for Windows x32 & x64 as well... Beside this is an Autodesk challenge so you should appreciate that the main purpose is actually to use their product for analysis...
Gert Skatškov over 10 years ago
What kind of mesh settings are we supposed to use? Not counting the given geometry restrictions are we allowed to go outside the original part envelope? FOS will be based on yield or ultimate tensile strength?
Arek K. over 10 years ago
Ioannis Skarlatakiv - Sim 360 is available only for Win 64bit, not for 32bit - this is problem for people having 32bit op. system
Ioannis Skarlatakis over 10 years ago
@Gert Considering the dimensions of the model and the tolerance of the displacement I would say the the FOS is based in yield strength... In fact the cases where you are considering FOS based on UTS are very seldom....
I am not quite sure what you mean regarding the mesh if you could be more detailed...? (Cheers)
Now regarding the envelope it would be hard to go out of it according to the red lines... beside you are looking to reduce mass so I would thought personally that we are just about to remove some mass from the existing part as you have already done in your model... but I think someone from the jury can be more specific in your question...
Ioannis Skarlatakis over 10 years ago
Hi Arek to I wouldn't post anything before checking first. Nevertheless I found that you can download sim 360 through the autodesk student community for both OS x32 & x64 at least it gives that as an option...
To be honest I will check the link and I would let you know...
Fahad Rafi Butt over 10 years ago
Pro is in both versions, for Sim 360 there is no option... just cloud...
Ioannis Skarlatakis over 10 years ago
That's right Fahad (My bad) indeed it is Sim-360 Pro but it shouldn't make any difference... from what I can see Pro provides some extra modules... and it seems that cloud service works for both...
Ioannis Skarlatakis over 10 years ago
I must admit that the video is very impressive... I look forward to start an analysis...
Gert Skatškov over 10 years ago
I have to stress out that using the default mesh settings gives VERY inaccurate simulation results. I think for fair play the mesh settings need to be specified...
Fahad Rafi Butt over 10 years ago
Agree, also the start sketch, the part dimensions in the paint file is not fully defined, the target weight not given as well!
Ioannis Skarlatakis over 10 years ago
@Gert Hi there, can you upload the max & min of FOS & V.M. from your simulation considering the default model only? I will try to post mine first thing tomorrow.
Just to check the solutions with respect to the mesh... -what you think?
Regarding the target weight I believe the lightest the better. However as long as you are given a displacement you can determine the limits.
Regarding the dimension, again in my opinion I believe, that are well defined as the only thing that you need to be aware is the red lines...
Fahad Rafi Butt over 10 years ago
Too much variance in weight, 90 Kg to 35 Kg, if they want it for NASA, then weight spoils everything in lift n thrust calculations! proper target weight needed!
Length changes weight too! 1000 mm is too much or too short! Length must have been in red too I guess?
Coarse mesh always give estimates, + or -, when you use curvature based mesh and other refinements the results change…
What about method for solution? Direct or adaptive? H changes mesh n stuff… if they really want to use this robot for something, they’d provide MUCH more details! And above all be here for answers!
Fahad Rafi Butt over 10 years ago
I guess they want to launch (on a larger scale) and make people use/test SIM 360, which is great too but for this roboi guess they want to launch and make people test SIM 360, which is great too but for this robot arm, we need mor inin
Fahad Rafi Butt over 10 years ago
This challenge introduced me to SIM 360, and Autodesk products look awesome on CV… easy interface, good materials library, above all learnt many new things, so far sthis so
Lalit over 10 years ago
I am not getting the notification for file import. I have uploaded 3-4 times. Can anybody help me?
Stephan H. Tobias (BuseHase) over 10 years ago
private entries are accepted?
ali over 10 years ago
Autodesk SIM 360 is free for downloading ?
how can i buy it ?
Stephan H. Tobias (BuseHase) over 10 years ago
Upload of each files doesn't work, "Error - Zipwrapper Error" what the hell its going here? We need help!
Sara Sigel over 10 years ago
@BuseHase Any entries uploaded as private will be switched to public at the Challenge deadline. I recommended uploading files by dragging and dropping multiple files. Zipped files will not preview in our 3D viewer. Follow-up with me at sara@grabcad.com if you get an upload error.
Stephan H. Tobias (BuseHase) over 10 years ago
Sorry Sara, i became this failure in Sim 360 when i try to upload a 3d-File ;-)
Sara Sigel over 10 years ago
No worries, they have a forum here which may help you troubleshoot: http://forums.autodesk.com/t5/Autodesk-Sim-360/bd-p/710
Fahad Rafi Butt over 10 years ago
try STEP, i use it
Stephan H. Tobias (BuseHase) over 10 years ago
Every type of 3D file, 2D dwg still works. I am confused :-(
Stephan H. Tobias (BuseHase) over 10 years ago
Ok i have fixed my problems, thanks for this Sara. But what is about the manufacturing of this arm?
Seth Muller over 10 years ago
Is this limited to the standard machining operations or can this part be designed to be 3d printed?
Hevi over 10 years ago
Can we use other software for remodeling of this arm? Of course I will use this software for FEM.
Aldin Ramic over 10 years ago
still i can't download Sim 360 for 32 bit os, why?
Ioannis Skarlatakis over 10 years ago
Hi Aldin you must skipped a couple of messages above... Sim 360 is on 64 bit only... However there is an option to download "Sim 360 Pro" that is available in both 32 & 64 bit and provides cloud simulation as an option similar to Sim 360... The difference as mentioned before from Fahad is that Sim 360 is only cloud service while Sim 360 Pro works for both cloud and desktop...
Nevertheless this is not an official decision to use Sim 360 Pro but in my opinion it shouldn't be a problem as it is the same company and pretty much the same software... For a quicker and more official response you can send an email to sara@grabcad.com
Ravichandra J P over 10 years ago
Specify these:
1. Manufacturing method of the product?
2 Mesh parameters for analysis?
Ioannis Skarlatakis over 10 years ago
I have seen at least 2 posts asking for mesh parameters until now. I will agree that the mesh is a very significant parameter for the simulation but I am afraid that it is up to you to define a healthy mesh... (In the end of the day this is why you pay an engineer... ...To make a good decision :) ) I would recommend to everybody who is submitting in this challenge to check the convergence plot... for reasonable results.
The idea of 100.000 elements doesn't always bring the best solution...
The best solution or even better the least-worst solution is the Converged Solution
I hope that will help...
Regarding Manufacturing methods... Considering that there is no specific budget and the fact that you are submitting in an Autodesk challenge I would assume that everything is possible. Beside apart from the blind-cell technique all the rest belong to a CNC machine...even moulding will end up with a machining procedure. In my opinion I believe that the manufacturing process will not be a boundary... In fact using SIM 360 Autodesk is welcoming any complexity... and of course "out of the box" ideas...
So, in total two things find out how you can get a Converged Solution... And bring the most complex part that you can design to test it in Sim 360...
Regards
Hevi over 10 years ago
GC still has to work about time of the response. Ppl have questions so GC should answer asap :)
My question is - can we change all "black" dimesnions? We can not change "red" ones, right?
Ioannis Skarlatakis over 10 years ago
Hi Hevi I cannot speak on behalf of GC but I can tell for sure that you are 99% right regarding the boundaries...
To answer to your question what you need to do is to maintain the red lines in position and dimension. For example the vertical dimension of 1000.00 mm despite the fact that is black cannot be changed.... However, on the side elevation the horizontal dimension of 50.00 mm represents the "maximum" thickness of the plate so, on a way you can reduce this dimension according to the desired results of the analysis... it seems to be a bit tricky ;P
Hevi over 10 years ago
Maintain red lines in position, so the 1000mm should be marked as red, but it is not, so for me this means that I CAN change it, let say, 500mm ...what u think?
Jerry Grandov over 10 years ago
ASTM A36 is a cheap low carbon steel. If weight is to be minimized, you need to start with a high strength steel.
Stephan H. Tobias (BuseHase) over 10 years ago
Why are so big differences between SIM360 and other cad software?
Ioannis Skarlatakis over 10 years ago
I will try to explain that on a different way...
Imagine that I am giving you these red lines and I am telling you that these lines are fixed on a Cartesian System so apparently the only option for you is to think how you will connect this red lines...
Even the rule above states clearly that...
"keeping the "location" and "size" of the critical faces shown in red in the following image"
...it doesn't say anything for the black dimensions.
In fact the dimensions are there for you only in case you want to start from scratch ignoring the attached model...
So, the answer is No you cannot change any dimension apart from the thickness that says "50.00 max." Of course this makes a lot of sense.
The thickness of a plate or a beam for example is the most common parameter that can be changed according to loading for any structure . I bet you solved a lot of engineering problems asking to determine the diameter of a round beam let's say or its thickness....
I hope that I answered your question ?
Ioannis Skarlatakis over 10 years ago
@Jerry you spoke words of wisdom... But what if the client tells you that...
"...I want this material because its cheap and maybe later I will apply some kind of coating to make this harder..." It's still an option. Nevertheless I wouldn't imagine that we need to take it that far as long as the material has been chosen. However, I am with you as the material selection is the most important stage of designing once you 'll define the loadings....
Ioannis Skarlatakis over 10 years ago
@BuseHase Well... I wouldn't exactly call the Sim 360 "CAD software". It definitely can respond to design requirements and quick alterations nothing to argue. But it is not here to replace Inv or SW or SE or any other Cad. (at least for now as you never know what will happen in the future ;P). It is basically here to give the Cloud portability and the chance to run simulations even on train... or wherever.
What was so different for you..? (Happy to discuss this)
Hevi over 10 years ago
Ok, thanks, now it is clear. BTW - I was using ST5 FEM sim and the result was different... what to do, I will try this SIM360.
Ioannis Skarlatakis over 10 years ago
@Hevi Happy to share... - There is no chance to get the exact same results from two different simulations unless you use structured mesh... even then you will have a small deviation. I don't know ST5 but I can tell fore sure that Autodesk uses an adaptive mesh technique and therefore you have to be aware of the results from the Convergence plot not just the fancy colours... which by they way look awesome...!
ali over 10 years ago
can i optimize with abaqus ? i can not download autodesk here :(
Ioannis Skarlatakis over 10 years ago
Hi Ali I bet that you can do what ever is possible and acceptable in this challenge according to the rules. But optimization in abaqus and submitted here? I don't know it doesn't sound fair for the rest... Beside this challenge works mostly as a chance to meet new software like that of SIM 360. I am sad that you cannot download the software is still that issue of x32 & x64 bit ?
Just to avoid any misunderstanding you still allowed to design your part in a different CAD software but testing is suppose to be in SIM360...
However in my opinion the integrated CAD is a very nice experience and it will save you a lot of time for small quick alterations on your model.
I hope you understand the main point... ;)
Ioannis Skarlatakis over 10 years ago
Dear members of the Jury
So far I have checked many of the submitted models and it turns out that for a very small Convergence rate (that means more accurate solution less fluctuation) lower than 2% all of them reveal a FOS lower than 3. I personally believe that the jury should provide a boundary regarding the Convergence rate. This effectively will yield in an acceptable solution considering the mesh parameters. It is such a pity for all the participants (including myself) to submit a model on their best of the knowledge that in the end of the day does not meet the requirements.
Do you think that you can provide this info to us...
Best regards
Campean over 10 years ago
I have some model versions that turned out lower fs , but the chalenge's req is to obtain a min 3
Iron Man over 10 years ago
How the safety factor should be calculated? Against yield or ultimate strenght? It makes big difference to allowed stresses..
Ioannis Skarlatakis over 10 years ago
Regarding the above question Yield Strength is the answer...
vageesh over 10 years ago
FOS should be calculated using yield strength bcoz ur using linear static analysis...that is straight line portion is stress-strain curve...after yield point curve isn't linear so u can't use ultimate strength as failure criterion..i think
Dorjano Baruca over 10 years ago
For this to be a real life challenge there's one crucial piece of information missing. MANUFACTURING PROCESS!
Therefore I guess this is a nice promotion for Autodesk's SIM360. And that's fine!! I love different approach engineers are taking, but the real challenge would be designing for a specific manufacturing process.
You can not start designing without knowing how would you fabricate the piece, Right?
Anyway keep the good work going!v
Ioannis Skarlatakis over 10 years ago
Hey, Dorjano
Nice comment, and exactly to the point...
Despite the fact that I cannot speak on behalf of any jury I would imagine that a company capable to fabricate robots which can collect meteors wouldn't put a boundary for the Manufacturing Proc.
Of course everything has to do with the gravity of the specification but it seems that manufacturing proc. is not something to worry about.
Nevertheless the Manufacturing Proc. is an already posted comment and so far no one from the jury came with an additional boundary to this.
I would consider your opinion that this challenge is a nice promotion for Autodesk SIM360 and therefore the only boundary should be..."A valid Simulation"
Good luck to your design.
Ioannis Skarlatakis over 10 years ago
Dorjano has mentioned that a very thin plate might be weak to shear stresses and buckling... That is actually true... and I agree with him!
A good way to check the displacement, stresses, etc. of the arm due to its own weight can be calculated if you Unsuppress the yellow apple that represents the gravitational force that appears in the loading section.
Such information seem to be important and I believe that they need to be specified... to avoid over- or under-design of the arm...!
Flaviano Crespi over 10 years ago
Right Ioannis!, the force of gravity is the only known load present in the data of contest that can be applied along the axis "Z"
Dorjano Baruca over 10 years ago
My 5 cents.... Actually if we imagine that we're designing for an actual use, we should consider the fact that the grip of a robot arm is flat, but the "meteorite" is never flat! Therefore the load-forces (normal to the surface) should not be equally applied to the whole surface but ...realistically to the edge of that surface. Doing that we'll get a more real situation with an of center load which in consequence will change the whole design.
Try this guys and you will be surprised!
Ioannis Skarlatakis over 10 years ago
Another exceptional point...but that it would cost extra deformation After applying gravity...don't you thing?
However, I am here to argue politely ;P
-Here is the think if this robot collect meteors
1.What would be the gravitational force???
2.Will this robot operate on earth or on a another planet??? (I know sounds silly)
3.What is the size of the sample???
4.As an engineer you are always work your calculation with assumptions. I would easily assume that, once we don't have this extra loading that Dorjano speaks about, effectively the sample of meteor will be relatively small and due to a much smaller gravitational force as that of another planet it MIGHT be neglected.
Quick Example for gravity in popular planets
Earth G=9.78 (Very popular ;P)
Moon G=1.62
Mars G= 3.77
Unless the jury say anything we can appreciate how small this extra load can be...
Nevertheless this is another info that definitely belongs on the important specifications of this model. and it is worth mentioning
Thanks Dorjano
Dave over 10 years ago
How to submit files in private mode ?
Thom Tremblay over 10 years ago
Loannis,
This was not stated but this is for use on Earth but also not stated is what position the arm will be used in which would alter the direction of the gravitation force so it was left out of this equation to focus on the relatively simple problem at hand.
Wonderful questions though.
Thom Tremblay over 10 years ago
Fahad,
Thank you for your comments. I hope you'll continue to explore SIM 360.
Thom Tremblay over 10 years ago
SIM 360 is a Cloud based tool with a small, local client. SIM 360 Pro is a time tested and more traditional Desktop application that has the ability to use the Cloud for solving. This solving can be done in parallel allowing you to run multiple itterations and promoting optimization of your design.
Thom Tremblay over 10 years ago
Seth,
The model as created or modified in SIM 360 could exported for 3D Printing. As long as there is a process that will give the material consistency required to match a "traditional" manufacturing process.
Ioannis Skarlatakis over 10 years ago
Hi Thom
Thank you for taking the time to answer on our comments it will be very helpful for all the participants to understand the limits of this optimization...
However, would you think that is also possible somehow to comment on the validity of these simulations so far?
My personal opinion is that currently we have a lot of conservative designs around 50Kg and some very innocent approximation that drop below 30Kg, according to the rules of this challenge. The gap seems to be huge!
Do you think that we can have a more official opinion regarding the Convergence plot and the mesh refinement? (Not just for me but for all of us ;) )
I understand that these information doesn't fit on a single post. Therefore any sources might help us to reconsider our submitted models.
And for the end...
1. No gravitational force during the analysis according to your aforementioned comment am I right ?
2. 50mm max. I suppose that it means that we can reduce the thickness of the plate.
But, can we have a min. if it is possible?
No stress we still have time (11 days)
Best Regards
ioannis
Dorjano Baruca over 10 years ago
Ioannis
It's very difficult to include a gravitational force because you don't know the position of the robo-finger!! To be precise you should then calculate gravity in at least 6 different directions. But this then really calls for a more precise specification. As I noted elsewhere in this challenge, the load applied during lifting of a "meteorite" are far from being perpendicular and equally distributed on a touching surface. So IF WE REALLY WANT a USABLE model we should consider an off center force, a bit of torsion, gravity force (in the worst position). And again don't forget the dynamics. This finger is attached to something which moves, right? But OK, let's ignore dynamics and do statics only as for the previous sentence.
Ioannis Skarlatakis over 10 years ago
Hi Dorjano and all the rest of you guys...
I think we post too many info but not in the right order...
Let's start with the only mentioned loading applied by the rules...
1. 20.000 N is just the reaction force of a hydraulic piston!
Additional important info for an engineer...
2. Gravitational force is real and is always there for you. In physics we can ignore it but in engineering we just can't.... the reasons are quite obvious aren't they?
It is not difficult to apply the G.F. and you should consider this as it cause extra deformation due to the weight of the model...(NOT the weight of a rock) You don't apply a gravitational force and you simply assume that your model's weight doesn't exist! and therefore doesn't effect itself. (Sci fi Scenario!!!)
In my opinion... it is so bloody easy to find the max. deformation due to weight. The key is the moment of inertia.
3. Meteor suppose to give moments (bending and torsion) as you already mentioned very precisely above Dorjano. But please let's avoid to confuse the gravity force with the meteor's moments these are two different loading forms that applying on the arm...
So far everyone that take in to account the G.F. he/she is just considering the weight of the actual model and NOT any moments due to a piece of rock. These moments have to be applied in addition to the G.F.
4. Dynamics is a good way to explore and to determine the aforementioned moments (of a meteor). And of coarse always with the G.F. to be present. However dynamics can easily be neglected once you find that the velocity of the movement is so small or it changes so gradually that doesn't give a much higher acceleration (than 9.8) and therefore no extra higher forces... To balance this situation you can easily specify a higher FOS to make sure that you will not face any problems of plasticity....
In conclusion if the jury say no G.F. should be considered then we, sorry!, I can assume that I can ignore it for the shake of this challenge and only...
Dynamics is an impressive point, especially for the definition of the moments caused predominantly by the size and weight of a meteor but easily can be avoided for simplicity and only...
P.S.
To be even more clear speaking for my analysis the perpendicular and equally distributed force represents just the Gravitational Force and only that.
NOT a set of moments due to a meteor... with unknown size and weight...
Best Regards
Dorjano Baruca over 10 years ago
I'll just comment your second point (2. Gravitational force is real...):
Yes, but gravity always points to the center of the Earth, right? But the ORIENTATION of the arm is changing! So, sometimes the G.F. diminish sometimes increases the load applied to the device. ;-)
Ioannis Skarlatakis over 10 years ago
Hi Dorjano
Please accept the fact that I never claimed the opposite...and you were right when you mentioned the 6 directions. However, presuming that you are always considering the worst scenario the max displacement will still come when the moment of inertia is min.
Boru Wang over 10 years ago
Anyone knows how to open a .sim360 file in SolidWorks?
Ioannis Skarlatakis over 10 years ago
the most common "Bridge" between SIM 360 and the rest CAD software is the stp or igs format. You can export your model from SIM360 to these formats before import it to SW...
Ravichandra J P over 10 years ago
Help needed. I need to know how should i check convergence plot in sim360.
e.g.oussama over 10 years ago
that the unit is in millimeters
Kamyar over 10 years ago
This is nothing but a marketing gimmick by AutoDesk.
Fahad Rafi Butt over 10 years ago
@Kamyar, my earlier coments were about it! same idea
Konrad Jakubiak over 10 years ago
this red edge between holes has no 2nd dimension or angle, so can we rotate it a bit, or we must catch the angle from drawing?
Konrad Jakubiak over 10 years ago
And on both ends of this red edge between holes are any fillets permitted? Small ones like 5mm, or not at all?
Campean over 10 years ago
any results on selected winners ?
mohamed Farouk over 10 years ago
i wait too hope to be in the first 3
Ivan Ievdokymov over 10 years ago
Autodesk. We are punctual. ho-ho-ho!!! :)
mohamed Farouk over 10 years ago
it is 8/11?
mohamed Farouk over 10 years ago
they judge base on what design look like not based on weight
Sara Sigel over 10 years ago
Sorry for the delay in getting the winners up! Autodesk contacted the top solutions a few days back and it was my fault that they didn't make it up yesterday publicly. Great job to everyone! It looks like all participants picked up a few new skills with this one.
...
The winners did a great job of utilizing Sim360 to redesign a lighter robot gripper arm that kept the right constraints and can withstand 20,000 Newtons of resistance applied to the gripping surface with a deformation no greater than 8mm and a safety factor of 3 or greater. Congratulations!!!
mohamed Farouk over 10 years ago
by the way my design is 23.88 kg :)
Stephan H. Tobias (BuseHase) over 10 years ago
I dont understand the decision of the judges, some other designs quite lighter. But congrats to the winners
Designer over 10 years ago
I dont understand the decision of the judges too
Gert Skatškov over 10 years ago
It seems that the only criteria was not judged. At least they could have give us some feedback regarding the questions. It is a pity.
mohamed Farouk over 10 years ago
@Gert when i send them complian they told me my design does not meet challange requermentd and i make simulation with SIm360 and i get fos 3.01 and my dimention is perfect any one could check my designs 23.88kg and HTML from Sim360. there is no point of this challange
Stephan H. Tobias (BuseHase) over 10 years ago
Another point why are the private entry still private and not public?
Ivan Ievdokymov over 10 years ago
"This arm needs to be optimized to reduce its mass while being able to withstand 20,000 Newtons of resistance applied to the gripping surface with a deformation no greater than 8mm and a safety factor of 3 or greater"
As shown competition results, specified optimizing goals were little bit wrong :)
Konrad Jakubiak over 10 years ago
A task to reduce mass and they just pick nice looking designs and dont care about mass... I'm disappointed. Any explanation, maybe, because I don't understand something?
Please log in to add comments.
Log in