On 9/19/23 09:21, Lance Zhang wrote:

I would like to use adjoint equation to get the gradiant dJ/dΘ.A stands for stiffness matrix and Θ stands for density,J stands for destination function. Finally I will get the value of sensitivity.

Right. But what's the operation you want to do with dJ/dΘ? Do you actually have to have it element by element, or do you want to do a product with this, etc?

Best
 W.


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Wolfgang Bangerth          email:                 bange...@colostate.edu
                           www: http://www.math.colostate.edu/~bangerth/


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