There are many times that the derivation with respect to degrees of freedom can be trickier that it looks.
I was trying to find the residual and tangent matrix for my isotropic finite element code. I finally did the thing.
I had the problem with derivation since I forgot to take derivation of shape function tensor with respect to degrees of freedom.
I finally did it.
I was trying to find the residual and tangent matrix for my isotropic finite element code. I finally did the thing.
I had the problem with derivation since I forgot to take derivation of shape function tensor with respect to degrees of freedom.
I finally did it.
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