TITLE:
The Interlaminar Stress of Laminated Composite under Uniform Axial Deformation
AUTHORS:
Chuijin Yang, Jubing Chen, Shexu Zhao
KEYWORDS:
Interlaminar Stresses; Finite Element Method; Laminated Composite Plate
JOURNAL NAME:
Modeling and Numerical Simulation of Material Science,
Vol.3 No.2,
April
30,
2013
ABSTRACT: The interlaminar stresses are analyzed by combining the first shear theory with the layerwise theory method. And the plate subjected to a uniform axial strain is studied by the simplified displacement field. Using the simplified displacement field, the equations of finite element method is developed by the principle of virtual work. And the amount of calculation is reduced by using the linear element. Then, some numerical examples are given to verify the accuracy of the method and analyze the distribution of interlaminar stresses along y-axis and z-axis. The shapes of the stresses’ curves in the vicinity of the free edge are very different from the interior area. Moreover, the influence of the ply angle on the interlaminar stresses is analyzed for the plate [θ/-θ]s. It can be found that the shapes of the stresses along z-axis are similar when the angle is different, while the values of the interlaminar stresses are changed apparently with the ply angle.