All aircraft engines require the use of efficient and cost effective brackets. Additive manufacturing creates opportunities to build unique and highly efficient bracket-like structures. Here is an opportunity to show your best design.
When designing critical components for aircraft engines, today’s designers are constantly challenged with the tradeoﬀ between performance requirements for strength and stiﬀness on one hand and size and weight on the other. Recently, software tools have been developed to aid designers in optimizing their part designs. However, today’s manufacturing methods restrict designers ability to take advantage of these optimized structures beyond a certain level of complexity. Additive manufacturing is lifting the constraints of traditional manufacturing processes, giving designers the ability to grow practically any shape, enabling the use of fully optimized lightweight designs that do not sacriﬁce performance.
This Challenge will have TWO phases:
You can design your entry in any CAD software as long as STEP or IGES file is submitted.
The optimized geometry must fit within the original part envelope. STEP file will be available via the Download specifications button, soon.
Service Temperature: 75 F
Minimum material feature size (wall thickness): 0.050 in.
Interface 1: 0.75 inch diameter pin. The pin is to be considered infinitely stiff.
Interfaces 2 – 5: 0.375-24 AS3239-26 machine bolt. Nut face 0.405 in. max ID and 0.558 in. min OD. The bolts are to be considered infinitely stiff.
1. Max static linear load of 8,000 lbs vertical up.
2. Max static linear load of 8,500 lbs horizontal out.
3. Max static linear load of 9,500 lbs 42 degrees from vertical.
4. Max static torsional load of 5,000 lb-in horizontal at intersection of centerline of pin and midpoint between clevis arms.
Added based on Community questions (6/11/2013):
- Assume yield strength is 131 ksi.
- Participants should target the lightest weight designs.
Please post your mass or volume reduction compared to the original part envelope in your entry description. This will make it easier for the judges to sort the entries at the end of the Challenge. Thanks! (Added 06/14/2013)
See Official Rules at http://blog.grabcad.com/ge-terms-of-service/ for details. Contest opens on June 11, 2013. Must submit at least one Entry by July 26, 2013 (extended to August 9, 2013) to be eligible for Phase II. Must be 18 years of age or older to participate. No purchase necessary. Void where prohibited.
THESE OFFICIAL RULES SUPERSEDE ANY OTHER RULES AND TERMS & CONDITIONS ON THE WEBSITE OF SPONSOR OR GRABCAD.
By registering for the competition, you accept the conditions stated in these official rules (http://blog.grabcad.com/ge-terms-of-service/), agree to be bound by the decisions of the judges and warrant that you are eligible to participate in the competition. If you do not accept all of these official rules, then please do not register for the competition. We recommend that you print a copy of these official rules for your future reference.
PHASE I – During Phase I, Entrants will create an improved aircraft engine bracket design using the design and specification information (“Design and Specs”) on the Competition Website. Entrants can use any CAD software to create the design but the Entry must be submitted as a STEP or IGES file.
PHASE II – The top ten (10) Entries from Phase I will be additively manufactured and subjected to the loading scenarios defined on the Competition Website. The top eight (8) Entries with the lowest mass which also satisfy all the testing performance criteria (defined herein and also set forth on the Competition website) will receive additional prize awards (described herein).
The PHASE I of this Challenge starts on June 11, 2013 and ends on August 9, 2013 (note: extended end of Phase I on July 19, 2013).
PHASE II will run from September 17 to November 15 (note: dates moved due to Phase I extension, above). Final announcement is separate from Phase II dates.
Judging - Entries in Phase I and II will be analyzed and evaluated by a panel of (5) five judges (the “Jury”) comprised of experts from GE and GrabCAD.
PHASE I -The Entries will be analyzed and evaluated via simulation based on the identified performance criteria set forth on the Competition Website. Judging for Phase I will occur during a two week period from August 9th to August 23rd (dates moved due to Phase I extension, above). The top ten (10) Entries that meet the performance will be selected as prize winners.
PHASE II – The top ten (10) Entries from Phase I will be additively manufactured and subjected to the defined load cases on the Competition Website. Entries also will be evaluated for suitability for production from an additive manufacturing perspective. Other considerations will include determining load at failure and long term durability. Judging for Phase II will occur during a three month period from September 17 to November 15 (note: dates moved due to Phase I extension). The top eight (8) Entries that satisfy all the performance criteria with the lowest mass will be selected as Phase II winners. Final announcement of Phase II winners is planned for mid-December.
Tag your entries with "generalelectric"
Phase I: $1,000 for each of the TOP 10 entries
Phase II: Additional awards for TOP 8 entries from a total prize pool of $20,000 as shown below.
$1,000 cash each
$1,000 cash each
The Jury consists of judges who are experts from GE and GrabCAD.
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