Learning Forum

[Alex Horwege]

Hello, 

I have been using Johnson Cook models in my impact analyses, and I wanted to try some other constitutive models. I am running into an error where the material models are not recognized, including the models that come built-in with ANSYS Workbench (STEEL V250 for example, with Steinberg-Guinan strength model and Mie-Gruneisen EOS). 

How can I implement these models in LS-DYNA for ANSYS Workbench? Here is the error code from the Solver output below. It looks like it simply is not detecting the material model at all. I am currently using it with an SPH mesh, but I get the same error with other mesh methods too. 

 

Beginning of keyword reader                                   11/17/23 17:55:35
 
 *** Error 10157 (KEY+157)
     MAT 2 is not found
 
 *** Error 10304 (KEY+304)
     CHECKING MATERIAL INPUT Part ID= 2
     PART ID 2 with
     SECTION ID 2 and
     MATERIAL ID 2 does not exist.
     This is PART 2 in the order of input.
 
 *** Error 10133 (KEY+133)
     input data failed with: 4 errors
 E r r o r   t e r m i n a t i o n                             11/17/23 17:55:36

 

[Ram Gopisetti]

Hi,

The closest match for such material in LS-Dyna is MAT_011, 

You may want to check that material definition first, then use Command snippets under the scoped body. 

Native implementation is not made yet. 

Cheers, Ram