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CAE Fidesys 9.0 Documentation |
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CAE Fidesys 9.0 Documentation |
Hoffman theory is an extended version of the Tsai-Hill theory and takes into account the properties under tension or compression in one criterion. This criterion is based on the sum of linear quadratic stress invariants. To fully calculate the coefficient, it is necessary to solve the quadratic equation:
where the coefficients a, b are calculated as follows:
After solving the equation, we get the desired root:
