Polyrethane
Polyrethane
(OP)
Hello
Iam working with polyrethane material. Ido not know the behavior of this material. Can any one help me to introduce its parameters in Abaqus. Thanks a lot.
Iam working with polyrethane material. Ido not know the behavior of this material. Can any one help me to introduce its parameters in Abaqus. Thanks a lot.





RE: Polyrethane
RE: Polyrethane
TTFN

FAQ731-376: Eng-Tips.com Forum Policies
Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers
Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
RE: Polyrethane
Thanks for your answer. Unfortunately i have not a lot of nformation about the material. All that i know is that i will use it as the material of elastomeric ligatures used in orthodontic devices.
RE: Polyrethane
Your first step should be to obtain molded test slabs (in order to cut tensile test specimens) or molded tensile test specimens of the subject material. Once you have them design a tensile test to cover the expected strains and determine whether you want first pull test data or long term test data. Once you have the data, I would recommend using the Marlow model within Abaqus, prepare your data for Abaqus (see the manuals for details).
Manufactures and associated test labs, including your own, will not test slow enough or capture enough data in order to create a useable FEA material model. Quality tests are typically very fast and compare a couple of points which do not accurately describe the material's stress/strain properties.
I hope this is helpful.
RE: Polyrethane
RE: Polyrethane
It is useful to follow chicopee's advice in order to build and test out your model while you wait for the slabs to arrive and be tested. But unlike elastomers like Nylon, which are branded, polyurethane and other rubbers differ based on who compounded them. Therefore in my opinion if you want accurate results there is no substitution for testing your compound.
Good luck.