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Help with the Laplacian definition (second derivative)

Posted 20.08.2013, 05:39 GMT-4 Version 4.3a, Version 4.3b 0 Replies

Edward Munoz
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Hi
I want to do the laplacian of the hydrostatic pressure, which I've defined as the trace of the stress tensor / 3 (solid.I1s/3), but i've a problem,when i define the following expression : d(d(solid.I1s/3,x),x) +d(d(solid.I1s/3,y),y) the result is zero,which is not the expected result. Could you please tell me why is this happening?

Thanks in advance
Edward
0 Replies Last Post 20.08.2013, 05:39 GMT-4
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Hello Edward Munoz

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