{"id":186393,"date":"2021-07-26T13:43:09","date_gmt":"2021-07-26T13:43:09","guid":{"rendered":"\/forum\/forums\/reply\/186393\/"},"modified":"2021-07-26T13:43:09","modified_gmt":"2021-07-26T13:43:09","slug":"186393","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/186393\/","title":{"rendered":"Reply To: quasi static compression test"},"content":{"rendered":"

Dear ram_gopisett<\/a>
\nMay I ask you to do a favor for me? to guide me step by step to solve my problem, I want to be sure that I am going it correctly.
\n2.At first, I defined my material. I extract the true stress and true strain from tensile test data. and add them as a Multilinear Isotropic Hardening.
\nI read that, If we want to use LS-Dyna for simulation and use Johnson cook failure criteria, we have to use the plasticity and failure criteria the same. I mean both of them should be based on Johnson cook. Is it true? Because here I used Multilinear Isotropic Hardening and Johnson cook failure as the below image :
\nI have a question about “Reference Strain Rate”, should I use ZERO? because I have just three damage constant. and melting temperature is important?
\n
\n2.But here before starting to do anything ansys gives me an error that:
\n
\nIf I clean 22 from temperature, it shows me this error again. I searched for this error but I could not find anything to how can I solve it. Please guide me.
\n3.I import my geometry and meshed it. In both mesh and body size, I added “0.003 mm” as the size of elements; and meshed it. should I use this size to calculate CFL?
\n4.the main problem for me is related to Analysis settings. Can you help me to fill it?<\/p>\n

I found CFL from a video in Ansys youtube and it is defined by the below equation
\n
\nI calculated my CFL time and it is equal to 5.31e-7. I should mention it I consider f=1 in the above equation. is it true?
\nCan you guid me about :
\nNumber of steps?
\nInitial, minimum and maximum time steps?
\nEnd time ?
\nStatic Dampin ?<\/p>\n

Thank you. dear @ram_gopisett<\/a>.<\/p>\n

<\/p>\n","protected":false},"template":"","class_list":["post-186393","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t