Pradeep
07-08-2011, 12:02 AM
Hello,
There have been numerous discussions on the forum about the pros and cons of CFRP monocoque chassis but little information about the testing and analysis.
To find out whether a monocoque chassis will be beneficial and to learn about the intricacies of composites manufacturing, we decided to carry out a project on this topic.
After completing the project, it became clear that having good manufacturing facility & experience (to have good process control) is important while building carbon components- hence we are now working on developing infrastructure for the same.
There are plenty of teams here that have built monocoques for many years now, and we would love to hear your thoughts, suggestions etc on the project. If there something you don't want to share on the forum, you can always PM me http://fsae.com/groupee_common/emoticons/icon_wink.gif. Here is the link : http://www.scribd.com/doc/5958...22kvvvazovn2rfx1grcs (http://www.scribd.com/doc/59582330/Open-Ver-Design-of-CFRP-Chassis-for-FSAE-Race-Car?secret_password=22kvvvazovn2rfx1grcs)
Also below are some topics that have remained partially/un- answered in my mind:
1. How do you prove equivalence for energy absorption?
2. What method is followed for insert design?-very curious how other teams do this.
3. During the calculation of ultimate strength of tubes (in bending) for equivalence should we take into account elasto-plastic failure ?
4. To use sandwich beam or plate equation for laminate design? We have used only beam equations in this project.
5. For teams using foam - how do thermoform the foam? We did do some research on the manufacturing front but decided to omit it from the report as it was not complete.
6. How do you find loads for joint design (when the chassis is built in multiple parts) ?
As of now the content of the report is free for anyones' use-If you are using any information from the report, please notify me and add credits where applicable.
Cheers
There have been numerous discussions on the forum about the pros and cons of CFRP monocoque chassis but little information about the testing and analysis.
To find out whether a monocoque chassis will be beneficial and to learn about the intricacies of composites manufacturing, we decided to carry out a project on this topic.
After completing the project, it became clear that having good manufacturing facility & experience (to have good process control) is important while building carbon components- hence we are now working on developing infrastructure for the same.
There are plenty of teams here that have built monocoques for many years now, and we would love to hear your thoughts, suggestions etc on the project. If there something you don't want to share on the forum, you can always PM me http://fsae.com/groupee_common/emoticons/icon_wink.gif. Here is the link : http://www.scribd.com/doc/5958...22kvvvazovn2rfx1grcs (http://www.scribd.com/doc/59582330/Open-Ver-Design-of-CFRP-Chassis-for-FSAE-Race-Car?secret_password=22kvvvazovn2rfx1grcs)
Also below are some topics that have remained partially/un- answered in my mind:
1. How do you prove equivalence for energy absorption?
2. What method is followed for insert design?-very curious how other teams do this.
3. During the calculation of ultimate strength of tubes (in bending) for equivalence should we take into account elasto-plastic failure ?
4. To use sandwich beam or plate equation for laminate design? We have used only beam equations in this project.
5. For teams using foam - how do thermoform the foam? We did do some research on the manufacturing front but decided to omit it from the report as it was not complete.
6. How do you find loads for joint design (when the chassis is built in multiple parts) ?
As of now the content of the report is free for anyones' use-If you are using any information from the report, please notify me and add credits where applicable.
Cheers