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Andrey-Fog / ANSYS-USERMAT-CMSG

The conventional theory of mechanism-based strain gradient plasticity is realized via ANSYS user programmable features for USERMAT subroutine. APDL script with example of cracked plate and instructions for compiling you can find in source files.
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The last two terms are missed in 'dn133'. #6

Open Budong-zhangliang opened 4 months ago

Budong-zhangliang commented 4 months ago

Two terms are missed in 'dn133': a7*SVAR(7,8) + a8*SVAR(8,8)

Budong-zhangliang commented 4 months ago

Additionally, xjacm(1,2) and xjacm(2,1) are fixed, while xjacm(1,3) and xjacm(3,1), xjacm(2,3) and xjacm(3,2) are not fixed.

Budong-zhangliang commented 4 months ago

dn133 should be:

            eta(9)= a1*SVAR(1,6) + a2*SVAR(2,6) + a3*SVAR(3,6)
 &        +         a4*SVAR(4,6) + a5*SVAR(5,6) + a6*SVAR(6,6)
 &        +         a7*SVAR(7,6) + a8*SVAR(8,6)