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Strain rate from previous time inc is initialized in LS-Dyna UMAT?

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Posts: 16
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Joined: 8 years ago

Hi all,

I read an old article which says that Ls-dyna initialises strain rate (as d1,d2,...) of the previous time step. This is when we use the vectorized format of UMAT. But in the recent user manual i could not find it anywhere mentioned. Are strain-rates initialized in recent versions too or procedures are modified?. Thanks.

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Posts: 3998
Joined: 5 years ago

I dont know the answer on top of my head, can you check it out using print statements?


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