Hill Yield Criteria
Rodney Hill has developed several yield criteria for anisotropic plastic deformations. The earliest version was a straightforward extension of the von Mises yield criterion and had a quadratic form. This model was later generalized by allowing for an exponent m. Variations of these criteria are in wide use for metals, polymers, and certain composites.
Read more about Hill Yield Criteria: Quadratic Hill Yield Criterion, Generalized Hill Yield Criterion, Hill 1993 Yield Criterion, Extensions of Hill's Yield Criteria
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