Piecewise UMAT plastic Model

Elmer cases by the users for the users
Post Reply
kevinarden
Posts: 384
Joined: 25 Jan 2019, 01:28
Antispam: Yes

Piecewise UMAT plastic Model

Post by kevinarden » 03 Jan 2020, 12:10

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 1084 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 1084 times
test case, the UMAT is in the zip with the test model
plastic.zip
(16.21 KiB) Downloaded 4 times

Post Reply