Abstract
To predict the mixed damage modes of unidirectional fiber-reinforced polymer (FRP) laminates under dynamic loading, an FEM-based peridynamic model is introduced in this paper. Based on its geometric structure and material composition, a long fiber lamina is considered a transversely isotropic medium as a result of homogenization at the meso-scale. The laminated structure is modeled by stacking surface mesh layers with arbitrary fiber angles along the thickness direction. The peridynamic bonds between Gauss points connect the separated elements. These bonds are classified as inner-layer bonds and inter-layer bonds. To represent the anisotropy of a laminate, the micro-elastic modulus of the inner-layer and inter-layer bonds is calculated from the anisotropic engineering material constants separately. To capture complex failure behaviors of laminate structures, an empirical damage model is proposed for the tension/ compression breakage of peridynamic bonds. This damage model can control the in-plane and delamination failure process. Benchmark tests are conducted to validate the elastic response of laminates under dynamic loading. In terms of damage analysis, the proposed model can capture the complex damage modes and resistive force of laminate structures.
| Original language | English |
|---|---|
| Pages (from-to) | 139-158 |
| Number of pages | 20 |
| Journal | Journal of Peridynamics and Nonlocal Modeling |
| Volume | 4 |
| Issue number | 1 |
| DOIs | |
| State | Published - Mar 2022 |
Funding
This material is based upon work supported by the US Department of Energy, Office of Energy Efficiency and Renewable Energy (EERE), specifically the Vehicle Technologies Office, High Performance Computing for Materials (HPC4Mtls) program, managed by Lawrence Livermore National Laboratory. This research used resources of the Compute and Data Environment for Science (CADES) at the Oak Ridge National Laboratory, which is supported by the Office of Science of the US Department of Energy under Contract No. DE-AC05-00OR22725. The authors would like to thank Livermore Software Technology, Ansys, for supporting this work by providing an LS-DYNA license to Oak Ridge National Laboratory. The authors would also like to thank Dennis Lam from Ford Motor Company for his helpful discussions on the subject. This manuscript has been authored in part by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).
| Funders | Funder number |
|---|---|
| CADES | |
| Data Environment for Science | |
| U.S. Department of Energy | |
| Ford Motor Company | |
| Office of Science | DE-AC05-00OR22725 |
| Office of Energy Efficiency and Renewable Energy | |
| Lawrence Livermore National Laboratory |
Keywords
- Discontinuous Galerkin
- Failure
- Laminate composite
- Peridynamics