Abstract
The pioneering work on the anisotropic polynomial stress tensor failure criterion of Von Mises (in 1928) is appraised, and a refined maximum stress criterion is proposed. By virtue of the homogeneous quadratic criterion and the strong anisotropy of unidirectional composites, the rationality of the Azzi-Tsai criterion is demonstrated. The applicability of the maximum stress criterion and of ‘two independent failure criteria’ are indicated, and methods to account for coupling effects in various stress components are suggested.
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