Recent content by zerrouki

i thought to use perzyna option to model the viscoplastic behaviour of the HDPE, have you some informations about this model ? ( if it can work with large deformation or with just small ones ?).

there are some authors who state that the constitutive law is elastc-viscoplastic. but the difficulty is how to determine the parameters of the viscoplastic part ?? take in account that these parameters need experimental data that require special machine to do the tests. Furthermore, there are...

hello the HDPE have a large strain that can reach 600% in tensile test, about the of crack propagation, the process carried out in room temperature. thanks for interest.

hello all i want to model crack propagation in HDPE using Ansys, first i need to define the behaviour of this material, so, what is the adequate constitutive law for HDPE. thanks all

dear McHugh the material to be tested is HDPE, the machine that can do this test is "Zwick Z100". how can I do the tests with different strain rates. thanks

hello is it possible to determine these paramaters using tensile tests with different strain rate or by using the creep test ? thank's for help.

Hello everyone i want to model viscoplasticity using Ansys APDL, Perzyna and Peirce or Anand model offer us to do this modeling, and each modèle Contains different parameters. the question is: how to determine the parameters (if we can determine them experimentally, what is the concerned test...