The goal of this challenge is to obtain an optimal design for the structural support located at the underframe of the Metropolis Metro.
This challenge will focus on a line of Alstom trains called the Metropolis Metro.
The structural support is a piece located at the bottom of the vehicle. The mounted support is made in s275 carbon steel, in UPN beams reinforced with welded plates.
It has a mass of 282 kg and costs $1,800. Currently there are two identical structural supports withstanding one static converter and one battery box each one.
The static converter has a mass of 1600 kg and the battery box 418 kg.
The structural support is under the underframe crossbeams, transversal pieces which are the interface between the train and the bogies. And the solebars are the longitudinal and external profile which belong to the underframe. Both the underframe crossbeams and the solebars are made in 6005A Aluminium.
Often admissible maximum weight is risen when designing a Metropolis, so it is quite relevant to decrease every pieza’s weight as much as possible. We would like to explore the possibilities of different materials and configurations.
Each Metropolis car body houses two pieces of the ones to be redesigned. This is a piece that is included in several times in the production of a complete train. In this sense, the repercussion of optimizing the commented piece is really relevant.
The challenge is to redesign this structural support, while respecting it's real-world application, and considering the available volume: 915mm (height) x 2130mm (width) x 2790mm (depth), with the goal of optimizing its manufacture in terms of price and time. Ease of assembly and mass reduction are desirable considerations when designing for this challenge. It must also withstand a static converter and a battery box.
For additional information and specifications, Click here and download/open the .zip file.
1) Mass reduction: reducing volume or composing it with different materials
2) Ease of assembly: reducing the number of fixings for example
3) Total cost
SUBMISSION FILE FORMATS:
- STEP of design space(s)
- Final design STL
- Stress analysis
- Mass reduction and load case diagram
- Accomplishing standard EN12663
- Accomplishing EN61373
- Accomplishing Alstom Standard ENG-STD-003
- Accomplishing EN 45545-2 (R7 HL2 requirement)
- Not to go out of the restricted volume (see images attached: "volume 1" & "volume 2").
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 "alstomunderframe" 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. Prizes may not be transferred or exchanged. 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.
This Challenge ends on March 26th, 2018 (17:00 EST.) Finalists will be announced April 12th, 2018 Winners will be announced April 19th, 2018.
$12,000 in prizes for top 3 places!
GrabCAD, Stratasys, and Alstom
As a promoter of sustainable mobility, Alstom develops and markets systems, equipment and services for the transport sector.
Alstom offers a complete range of solutions (from high-speed trains to metros, tramways and e-buses), passenger solutions, customised services (maintenance, modernisation), infrastructure, signalling and digital mobility solutions: Alstom is a world leader in integrated transport systems.
The company recorded sales of €7.3 billion and booked €10.0 billion of orders in the 2016/17 fiscal year. Headquartered in France, Alstom is present in over 60 countries and employs 32,800 people.
Alstom's ambition is to be the preferred partner of its customers for their transport solutions in all geographic locations and all market segments.
With a customer-focused organisation across the globe, Alstom offers a complete range of solutions and constantly innovates to create value for its customers.
The company strives for operational and environmental excellence and bases its success on a diverse and entrepreneurial team across the globe.