n72.75
Seize the means of computation
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If I have a second order Euler-Cauchy stress tensor,
Such as the following:
(How do I do matrices on O-F again?)
Anyway, suppose that this tensor is symmetrical(as it should be).
I find the three eigenvalues of the tensor.
And form a transformed principal stress tensor with the eigenvalues on the diagonal(Sigma1<=Sigma2<=Sigma3).
How do I find the orientation of the principal planes?
Such as the following:
(How do I do matrices on O-F again?)
Anyway, suppose that this tensor is symmetrical(as it should be).
I find the three eigenvalues of the tensor.
And form a transformed principal stress tensor with the eigenvalues on the diagonal(Sigma1<=Sigma2<=Sigma3).
How do I find the orientation of the principal planes?
