Piecewise UMAT plastic Model

Elmer cases by the users for the users
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kevinarden
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Piecewise UMAT plastic Model

Post by kevinarden »

Added a piecewise linear fit for the stress strain curve to provide a more general plastic material input.
piecewise_linear.png
piecewise_linear.png (19.17 KiB) Viewed 5055 times
Number of material constants is (number of points*2)+1
constants are nu,x1,y1,x2,y2,...,xn,yn
results
results.png
results.png (29.47 KiB) Viewed 5055 times
test case, the UMAT is in the zip with the test model
plastic.zip
(16.21 KiB) Downloaded 92 times
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