Abstract
An analysis model is presented for the elasto-plastic analysis of continuous fiber-reinforced composite structures. The model uses the material properties of each constituent separately instead of the smeared global properties obtained from the lamination theory. Both fiber and matrix stresses are computed using the analysis model. Thus, the elasto-plastic deformation of a metal-matrix composite, composed of elastic fibers and elasto-plastic matrix, can be analyzed using the yield function and the flow rule suitable for each constituent. If each constituent is homogeneous and isotropic, then the usual von Mises yield function and the Prandtl-Reuss flow rule can be used. There is no need to obtain the global elasto-plastic material properties using the rule of mixtures. The formulation for the finite element matrix equation is given for the analysis model. Some numerical examples are solved using the method.
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