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Entering a linear elasticity eq in PDE coefficient form
Posted 2 mars 2011, 06:51 UTC−5 Parameters, Variables, & Functions, Structural Mechanics 0 Replies
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I'm having some trouble entering a linear elasticity eq in COMSOL 3.5. I'm trying to enter the equation into "PDE coefficient form" by defining diffusion coefficient tensor c with
upload.wikimedia.org/math/f/1/5/f153d1961110893d684a93fc6a1148e5.png
This should yield the same equation system with Structural Mechanics application mode (which is given in weak form). However, when I calculated the eigenfrequencies of a cylinder with these two methods I got different results.
Could someone post a working linear elasticity model expressed in strong form?
Thanks in advance,
-Tuomas
Hello Tuomas
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