Hello everyone,

  I am using a VUMAT with isotropic hardening in my three dimensional model. Can someone tell me how is plasticity data passed into this subroutine? In VUMAT for kinematic hardening we define the yield stress and hardening modulus along with E and poisson's ratio in *User Material. I did not find any isotropic hardening VUMAT examples in manual. Do we define the hardening modulus or the yield stress-plastic strain data in isotropic hardening VUMAT? I will be really thankful if anyone can help me.

Thank you

Swapnil

Hello everyone,
  I have a question about defining the density for cohesive elements. My model is in Explicit so I must  define the density for cohesive elements. The density for my part is 700kg/m^3. The elastic modulus for the part is 100MPa. The units are in SI system. I have determined all the other material parameters and they are reasonable. The peeling simulation works for cohesive density of .00163kg/m^3 but gives awry results for 50-1000 kg/m^3. I am guessing that the density of the cohesive elements should be near about the same or higher than the part density it is adhered to. Should the cohesive density be determined by calculating the density of the actual adhesive? I appreciate your help in this regard.

Thank you
Swapnil

Hello Everyone,

  I am modeling cohesive layer(defined as a part) resting on a rigid body. I am trying to give different cohesive properties to the same cohesive layer. So I created 6 cohesive sections by partition. 3 sections have one cohesive property and the other 3 section have the second cohesive property. I have assigned sections through Abaqus/CAE. During the data check itself the job terminates with an error

*CONFLICT for the second cohesive material property. In the input file the Conflict block is for the second cohesive material property only. The data file error is

 Hello,

 I am trying to figure out how to call UMAT through the abaqus command. I have a local abaqus licence. How do I get into the command window to type in the commands? I have installed fortran. I am trying to run one of the examples in the manual which gives me the .inp file and .f file. I went through a number of forums and the manual which tells me to use compile_fortran and abaqus make commands. Can someone guide me through the procedure? I am using version 6.7-5.

Thank you