Most stress strain-curves in rubber are done in compression. Also remember that rubber is non-linear in stress-strain.
Your best bet is to do finite element analysis (FEA). Input the "E" (slope) and choose a K factor around .5. If you have access to Cosmos, they have rubber properties in there...
sounds like a sponge rubber of some type. a picture might help. also, there are rubber compound testing companies out there where you can send your material to get tested.
best,
Michael
Engineer
Mykin Inc
http://mykin.com
Michael Chou
http://mykin.com
Or better yet, you can choose which rubber material best suits your application in this <a href=”http://mykin.com/index.php/rubber-properties”>rubber properties chart</a>. The chart allows you to choose which rubber properties that are important to you. Remember, choosing the right rubber...
Try using SBR.
Or better yet use this chart to pick out what you think is more important.
http://mykin.com/index.php/material-properties
Michael
www.mykin.com
Try using Butyl (IIR)
High performance R/C tire manufacturers use it.
Excellent high energy absorption (good traction)
Michael Chou, Mykin Inc
www.mykinonline.com
