Papers by Author: Yi Xia Zhang

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Authors: Hua Shan Zhang, Yi Xia Zhang
Abstract: 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.
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Authors: Xin Wang, Yi Xia Zhang, Yu Hong Cui
Abstract: On the basis of the characters of dentinal microstructures, a new Three-Parameter-Solid viscoelastic mechanics model which can predict strain creep, stress relaxation and instant elasticity with anisotropic constitutive relation for the human dentin is developed in this paper. The porous protein-mineral model is adopted to obtain the independent dentinal viscoelastic moduli based on its microstructural characters. The influencing mechanisms and the viscoelastic properties of the microstructural dentin are also evaluated by the Three-Parameter-Solid viscoelastic model. The viscoelastic predictive results obtained from the Three-Parameter-Solid viscoelastic model agree well with those from the experimental investigation in both wet and dry situations.
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Authors: Yi Xia Zhang, Chun Hui Yang
Abstract: Efficient and accurate finite elements are crucial for finite element analysis to provide adequate prediction of the structural behavior. A large amount of laminated plate elements have been developed for finite element analysis of laminated composite plates based on the various lamination theories. A recent and complete review of the laminated finite elements based on the higher-order shear deformation theories, including the global higher-order theories, zig-zag theories and the global-local higher-order theories is presented in this paper. Finally some points on the development of the laminated plate elements are summarized.
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