Nonlinear progressive damage model for composite laminates used for low-velocity impact |
| |
Authors: | Wei Guo Pu Xue Jun Yang |
| |
Institution: | 1. School of Aeronautics, Northwest Polytechnical University, Xi’an, 710072, P. R. China 2. Chengdu Aircraft Design and Research Institute, Chengdu, 610041, P. R. China
|
| |
Abstract: | In order to effectively describe the progressively intralaminar and interlaminar damage for composite laminates, a three dimensional progressive damage model for composite laminates to be used for low-velocity impact is presented. Being applied to three-dimensional (3D) solid elements and cohesive elements, the nonlinear damage model can be used to analyze the dynamic performance of composite structure and its failure behavior. For the intralaminar damage, as a function of the energy release rate, the damage model in an exponential function can describe progressive development of the damage. For the interlaminar damage, the damage evolution is described by the framework of the continuum mechanics through cohesive elements. Coding the user subroutine VUMAT of the finite element software ABAQUS/Explicit, the model is applied to an example, i.e., carbon fiber reinforced epoxy composite laminates under low-velocity impact. It is shown that the prediction of damage and deformation agrees well with the experimental results. |
| |
Keywords: | composite laminate progressive damage delamination energy release rate low-velocity impact |
本文献已被 维普 SpringerLink 等数据库收录! |
|