# Get strain-stress relationship in spherical coordinates with Poisson ratio?

Posted 10 months ago
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 Hello everyone,I am wondering if there is a way to get the relationship between strain and stress in spherical coordinates with Poisson's ratio. I read the documentation here:https://reference.wolfram.com/applications/structural/GoverningEquationsofElasticity.htmlbut there is only the relationship between strain and stress in spherical coordinates with Lamè's coefficients.Thank you very much for your time.
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Posted 10 months ago
 Why not use "replace the Lamé coefficients with Young's modulus and Poisson's ratio " In[65] $\lambda -> - \frac{\nu E_c}{(1+\nu)(2\nu -1)}$, $\mu -> \frac {E_c}{2(1+\nu)}$?
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