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Ls-dyna implementation of polymer matrix composite model under high strain rate impact
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Zheng, Xia-Hua Roberts, Gary D. Binienda, Wieslaw K. Goldberg, Robert K. |
| Copyright Year | 2003 |
| Description | A recently developed constitutive model is implemented into LS-DYNA as a user defined material model (UMAT) to characterize the nonlinear strain rate dependent behavior of polymers. By utilizing this model within a micromechanics technique based on a laminate analogy, an algorithm to analyze the strain rate dependent, nonlinear deformation of a fiber reinforced polymer matrix composite is then developed as a UMAT to simulate the response of these composites under high strain rate impact. The models are designed for shell elements in order to ensure computational efficiency. Experimental and numerical stress-strain curves are compared for two representative polymers and a representative polymer matrix composite, with the analytical model predicting the experimental response reasonably well. |
| File Size | 988249 |
| Page Count | 20 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20030068093 |
| Archival Resource Key | ark:/13960/t3033sx88 |
| Language | English |
| Publisher Date | 2003-09-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Polymer Matrix Composites Deformation Fiber Composites Mechanical Properties Computerized Simulation Impact Tests Laminates Finite Element Method Micromechanics Stress-strain Relationships Failure Analysis Mathematical Models Resins Strain Rate Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
