The limit state equations are developed from maximum stress, maximum strain, Tsai-Hill, Tsai-Wu and Hoffman failure criteria.
Maximum stress, Maximum strain, Tsai-Hill and Tsai-Wu biaxial failure theories are evaluated for the assumption of isotropic behaviour and contrasted with the experimental results.
The failure envelope of the experiments was compared with those of failure criteria such as those based on the maximum stress, maximum strain and ply scale continuum damage model.
The failure properties obtained experimentally from this technique are compared with the analytical predictions of the Maximum stress, Maximum strain, Tsai-Hill and Tsai-Wu failure theories and the numerical results obtained by means of the Finite Element Method.
Classical lamination theory (CLT) and finite element analysis (FEA) were employed to determine the stress distribution within the composites with the maximum allowable load at first ply failure (FPF) and apparent flexural strength being determined based on four commonly used failure theories, namely, maximum stress, maximum strain, Azzi-Tsai-Hill and Tsai-Wu.
Different failure criteria can be introduced with this keyword based on maximum principal strain, maximum shear strain, pressure, principal stress, and damage.
The maximum contact force, maximum strain, and the absorbed energy were evaluated in each test.
The relationship between fatigue life and maximum engineering stress, maximum strain and strain energy density were studied.
For each stress level, the corresponding Neuber-Hyperbolas, Masing-loops and their maximum stress and maximum strain values were determined in order to calculate damage parameter (PSWT) values.
Numerous fracture criteria, based on strain and stress conditions, exist which can be used in finite element (FE) models of the shearing, for example, maximum effective strain, maximum shear stress, or combined stress and strain criteria (Cockcroft and Latham 1968; Johnson and Cook 1985).
