Optimize Airplane Bearing Bracket Design
The design must fit entirely within target envelope described in the specifications.
Design material: 15-5PH per AMS5862:
o Elastic Modulus (E) = 29,000 KSI = 200,000 MPa = 200 GPa
o Poisson Ratio (ν) = 0.27
o Yield Stress (σ_y) = 145 KSI = 1000 MPA
o Density (ρ) = 0.283 lb/in^3 = 7833 kg/m^3
o Material is assumed to be linear elastic
Minimum geometric feature: 0.025 in.
Minimum wall thickness: 0.045 in.
Parts shall be optimized for minimum weight with the following boundary and loading conditions:
- Base support: The part is bolted against a mating plate of high stiffness
- Bolts interface: The parts is fastened with four #10-32 high strength tension rated bolts as indicated in the specifications
- Bearing interface: The part is loaded through a high stiffness spherical bearing with three load cases:
1. A load of 1,250 lbf applied horizontally
2. A load of 1,875 lbf applied 45 degrees from the horizontal
3. A load of 2,500 lbf applied vertically
Parts are intended to be additively manufactured via a laser/powder bed system. Please indicate the intended printing direction/orientation in your submission.
Please click "Download Specification" button below to download and view diagrams for the different bracket loading conditions. To learn more about designing for metal additive manufacturing, check out GrabCAD Blog.
As the entries will be fabricated and tested, the Finalists will be announced by March 18th, 6 weeks from the end of the challenge in order to allow time for testing.
Your entry must include:
• Any render or image files (jpeg, png, etc)
• Any calculations or considerations
• A schematic or sketch showing the desired printing direction
Must fulfill design considerations stated above.
Judging criteria will be based on achievement of accomplishing criteria listed above, including:
Cost (ease of manufacturing, minimal/no support structure required)
ENTERING THE COMPETITION The Challenge is open to everyone except employees and families of GrabCAD and the Sponsor. Multiple entries are welcome. Team entries are welcome. By entering the Challenge you: 1. Accept the official GrabCAD Challenges Terms & Conditions. 2. Agree to be bound by the decisions of the judges (Jury). 3. Warrant that you are eligible to participate. 4. Warrant that the submission is your original work. 5. Warrant, to the best of your knowledge, your work is not, and has not been in production or otherwise previously published or exhibited. 6. Warrant neither the work nor its use infringes the intellectual property rights (whether a patent, utility model, functional design right, aesthetic design right, trademark, copyright or any other intellectual property right) of any other person. 7. Warrant participation shall not constitute employment, assignment or offer of employment or assignment. 8. Are not entitled to any compensation or reimbursement for any costs. 9. Agree the Sponsor and GrabCAD have the right to promote all entries. If you think an entry may infringe on existing copyrighted materials, please email firstname.lastname@example.org
SUBMITTING AN ENTRY
Only entries uploaded to GrabCAD through the "Submit entry" button on this Challenge page will be considered an entry. Only public entries are eligible.
We encourage teams to use GrabCAD Workbench for developing their entries.
Entries are automatically given the tag "airplanebearingbracket" when uploading to GrabCAD. Please do not edit or delete this tag. Only entries with valid tag will participate in the Challenge.
AWARDING THE WINNERS 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. Only 1 award per person. All judging decisions are final. All winners will be contacted by the GrabCAD staff to get their contact information and any other information needed to get the prize to them. Payment of cash awards is made through PayPal. All team awards will be transferred to the member who entered the Challenge. We will release the finalists before the announcement of the winners to give the Community an opportunity to share their favorites in the comments, discuss concerns, and allow time for any testing or analysis by the Jury. The Jury will take the feedback into consideration when picking the winners. Winning designs will be chosen based on the Rules and Requirements. - Entry deadline is February 7, 2016 (11:59pm UTC). - The finalists will be announced by March 18, 2016. - The winners will be announced by March 30, 2016. Void where prohibited.
SPEC REFINEMENT We want to make sure that you have all of the information that you need to tackle the challenge. As such, in the first week of a challenge we may refine the specifications or offer clarifications based on member feedback. Please ask any questions that you have!
$3,000 in prizes for top 3 places!
The jury consists of experts from Alcoa and GrabCAD.
Alcoa Fastening Systems & Rings, a business unit of Alcoa, is a leading worldwide designer and manufacturer of fastening systems and rings, including specialty fasteners, fluid fittings, assembly components, installation systems, and seamless rings for aerospace and industrial applications. Headquartered in Torrance, California, the company has approximately 8,700 employees at 39 manufacturing and distribution/logistics locations in 13 countries. A global leader in lightweight metals technology, engineering and manufacturing, Alcoa innovates multi-material solutions that advance our world. Our technologies enhance transportation, from automotive and commercial transport to air and space travel, and improve industrial and consumer electronics products. We enable smart buildings, sustainable food and beverage packaging, high-performance defense vehicles across air, land and sea, deeper oil and gas drilling and more efficient power generation. We pioneered the aluminum industry over 125 years ago, and today, our more than 60,000 people in 30 countries deliver value-add products made of titanium, nickel and aluminum, and produce best-in-class bauxite, alumina and primary aluminum products.