hi ,
i am doing a structural analysis on a part made of HDPE. i am assuming it to be a lineary elastic material. then what can be the best values for youngs modulus, poissons ratio, yeild stress. etc.
Try searching polymer manufacturers websites, or E-funda, ot RTPcompany website.
Regards
pat pprimmer@acay.com.au
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What about "e" modulus. It might be listed as APPARENT modulus as thermoplastics are subject to creep under load, and therefore are not fully elastic, and it is time, load, temperature dependant, therefor any measure of elastic recovery is normally qualified in some way.
Regards
pat pprimmer@acay.com.au
eng-tips, by professional engineers for professional engineers
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
For solids, Poisson's ratio ranges between ~ 0.3 (fully elastic deformation) to 0.5 (fully plastic deformation). Use both of these to see the behavior at the limits.
If the environment is room temperature with short loading time, then typical properties for HDPE are:
E = 1.05 GPa
[ν] = 0.35
yield stress = 25 MPa
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.