I want to check the effect of DDSDDE in UMAT on the element stiffness matrix. So, is it possible to output the element stiffness matrix in each iteration in Abaqus/Standard?
Checkout the following paper: They have answer to your question in the appendix. Basically, you will have to add a line in input file to output the stiffness matrix, like
''*Element Matrix Output, Elset=Set-1, File Name=myMatrix, Frequency=n, Output File=User Defined, Stiffness=Yes"
Zhu, J. C., Bettaieb, M. B., & Abed-Meraim, F. (2022). Comparative study of three techniques for the computation of the macroscopic tangent moduli by periodic homogenization scheme. Engineering with Computers, 1-30.
Vigneshwaran Radhakrishnan Thank you for your answer. But using ''*Element Matrix Output, Elset=Set-1, File Name=myMatrix, Frequency=n, Output File=User Defined, Stiffness=Yes" can only output element stiffness matrix at the beginning of each increment, in which there may be several iterations to obtain convergent solution. So, how can we output element stiffness matrix at every iteration?
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