Thanks all for you timely response!
Yes, I did look at matweb. Seems like most people like the site but it does
not have Poisson's ratio nor Young's Modulus for HDPE. . . .
Chevron / Phillips was very helpful however.
Young Modulus - 263k psi
Poisson's - .425
These are, of coarse, ball park figures and as you know Machanica is not
particularly suited for plastics . . . . . .
Bye now,
Leo Greene
Principle
E-Cognition Inc, Engineering Services, Video tutorials