Determination of material properties for ANSYS progressive damage analysis of laminated composites

摘要

A method is presented to calculate the material parameters required by the progressive damage analysis (PDA) material- model in ANSYS (R). The proposed method is based on fitting results calculated with PDA to experimental data by using Design of Experiments and Direct Optimization. The method uses experimental modulus-reduction vs. strain data for only two laminates to fit all the parameters required by PDA transverse/shear damage mode. Fitted parameters are then used to predict and compare with the experimental response of other laminates. Mesh sensitivity of PDA is studied by performing p- and h-mesh refinement. PDA can then be used to predict the response with damage evolution of any layup. (C) 2017 Elsevier Ltd. All rights reserved.