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Questions related from Van Bac Mai
Dear all, I have an issue that could you give me some advice.I intend to build up a damage model for metal that has some iterations. However, I don not know should I use UMAT or VUMAT? I saw some...
10 October 2016 8,600 5 View
Dear all, I have a problem with Abaqus/UMAT. Can I define a function in UMAT and call it at any point in the code? For example, I want to define von Mises stress as a function of a stress vector...
10 October 2016 5,333 4 View
Dear all, I am using a model with softening. For it, I have to change a parameter of the model according to mesh size (element characteristic length) with UMAT. Of course, this parameter does not...
01 January 1970 9,497 0 View
Dear all, I have built up a material constitutive model with UMAT. It runs well with simple structures without contact. However, the program cannot work with contact. In the simulation, the bolt...
01 January 1970 9,792 1 View
Dear all, I intend to use fracture energy to control softening region (Smeared crack approach). As I know, to use this model we have to determine characteristic element length. Currently, I am...
01 January 1970 5,558 3 View
Dear all, I am simulating a material softening region for steel. For plastic information, the input data is set up following the curve in the figure. This data is extended larger for the input...
01 January 1970 2,115 9 View
Dear all, I have a problem with UMAT that could you give me some advice, please! I test the subroutine with one element (C3D8 mesh size 3x3x3) and it gives an appropriate result with post-peak...
01 January 1970 4,143 3 View
