A New Micromechanical Elasto-Plastic Constitutive Model for Fiber-Reinforced Composite Laminates
A micromechanical elastic-plastic bridging constitutive model is developed in this paper for accurate representation of material behavior of fiber-reinforced composite laminates. In the bridging constitutive model, elastic behavior is represented by bridging matrix elements and interaction between the average stresses in matrix with those in fibers are included. A transient plastic bridging matrix is developed to describe accurately the elastic-plastic material properties of the fiber reinforced composites, and the effects of the material parameters of matrix and fiber on the bridging matrix elements have been accounted for. The proposed constitutive model is validated against experiment investigation.
Jian-Feng Nie and Allan Morton
H. S. Zhang and Y. X. Zhang, "A New Micromechanical Elasto-Plastic Constitutive Model for Fiber-Reinforced Composite Laminates", Materials Science Forum, Vols. 654-656, pp. 2459-2462, 2010