Tserpes, K.; Kormpos, P. Detailed Finite Element Models for the Simulation of the Laser Shock Wave Response of 3D Woven Composites. J. Compos. Sci.2024, 8, 83.
Tserpes, K.; Kormpos, P. Detailed Finite Element Models for the Simulation of the Laser Shock Wave Response of 3D Woven Composites. J. Compos. Sci. 2024, 8, 83.
Tserpes, K.; Kormpos, P. Detailed Finite Element Models for the Simulation of the Laser Shock Wave Response of 3D Woven Composites. J. Compos. Sci.2024, 8, 83.
Tserpes, K.; Kormpos, P. Detailed Finite Element Models for the Simulation of the Laser Shock Wave Response of 3D Woven Composites. J. Compos. Sci. 2024, 8, 83.
Abstract
This paper presents a numerical study on the laser shock wave propagation in a 3D woven CFRP material by means of detailed and homogenized FE models. The aim of the study is to numerically characterize the shock wave response of the 3D woven CFRP in terms of back face velocity profiles and the induced damage and to investigate whether the detailed FE models could be replaced by homogenized FE models. The 3D woven geometry was designed using the TexGen software, while the numerical analyses were executed using the LS-Dyna explicit FE software. A high-strain rate behavior was considered for the matrix. The fiber bundles in the detailed models were modeled as a high fiber content unidirectional composite laminate, with its mechanical properties calculated by micromechanical equations. Both for the fiber bundles of the detailed model and the homogenized models a progressive damage material model was applied. The results of the detailed model reveal a considerable effect of material’s architecture on the shock wave propagation and the sensitivity of the back face velocity profile to the spot location. Consequently, the homogenized model is not capable of accurately simulating the shock wave response of the 3D woven composite. Moreover, the detailed predicts with high accuracy matrix cracking in the resin-rich areas and in the bundles as well as fiber failure. On the contrary, the homogenized model predicts matrix cracking at the same areas and no fiber failure.
Keywords
3D woven composites; Laser shock; Finite element analysis; Shock wave modeling
Subject
Engineering, Mechanical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
