Micromechanical analysis of the strength of unidirectional fiber composites

Abstract A micromechanical analysis is presented for the prediction of ultimate stresses of unidirectional fiber composites under complex loading systems. The method is based on micro-failure criteria applied to the fiber and matrix phases as well as to the fiber/matrix interfaces. The theory is implemented for the prediction of the off-axis strength of six types of laminae for which measured data are available, and good agreement is shown to exist in most cases. Several possible generalizations are discussed.

[1]  M. S. Madhava Rao,et al.  Yielding in Unidirectional Composites Under External Loads and Temperature Changes* , 1973 .

[2]  Jacob Aboudi,et al.  Closed form constitutive equations for metal matrix composites , 1987 .

[3]  P. Jackson,et al.  The effect of fibre orientation on the tensile strength of fibre-reinforced metals , 1966 .

[4]  Jacob Aboudi,et al.  Elastoplasticity theory for composite materials , 1986 .

[5]  M. Pindera,et al.  An endochronic theory for transversely isotropic fibrous composites , 1981 .

[6]  Z. Hashin,et al.  A Fatigue Failure Criterion for Fiber Reinforced Materials , 1973 .

[7]  Jacob Aboudi,et al.  Micromechanical analysis of yielding of metal matrix composites , 1988 .

[8]  Stephen W. Tsai,et al.  A General Theory of Strength for Anisotropic Materials , 1971 .

[9]  S. Tsai,et al.  Introduction to composite materials , 1980 .

[10]  Howard M. Adelman,et al.  Evaluation of the Tensor Polynomial and Hoffman Strength Theories for Composite Materials , 1977 .

[11]  Jacob Aboudi,et al.  Effective thermoelastic constants of short-fiber composites , 1984 .

[12]  R. Pipes,et al.  On the Off-Axis Strength Test for Anisotropic Materials1 , 1973 .

[13]  C. Herakovich.  MECHANICAL AND THERMAL CHARACTERIZATION OF UNIDIRECTIONAL ARAMID/EPOXY , 1987 .

[14]  Jacob Aboudi,et al.  Effective behavior of inelastic fiber-reinforced composites , 1984 .

[15]  Christos C. Chamis,et al.  Simplified Composite Micromechanics For Predicting Microstresses , 1987 .