Characterisation of Strain rate Dependent Material Properties of Textile Reinforced Thermoplastics for Crash and Impact Analysis
| Autor: | Christoph Ebert, H. Böhm, S. Nitschke, Maik Gude, Werner Hufenbach, Andreas Hornig, Albert Langkamp |
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| Rok vydání: | 2013 |
| Předmět: |
Strain rate dependency
Polypropylene Materials science Crash and impact analysis business.industry Through-thickness testing Stiffness General Medicine Structural engineering Strain rate Textile reinforcements Finite element method chemistry.chemical_compound Shear (geology) chemistry Rheology Ultimate tensile strength medicine Thermoplastics medicine.symptom Composite material Material properties business |
| Zdroj: | Procedia Materials Science. 2:204-211 |
| ISSN: | 2211-8128 |
| DOI: | 10.1016/j.mspro.2013.02.025 |
| Popis: | The strain rate dependent in-plane and through-thickness deformation and failure behaviour of textile reinforced polypropylene is investigated. An efficient in-plane parameter identification method based on rheological models is presented. Additionally, dynamic tensile, compression and shear tests were performed with woven and knitted textile reinforced thermoplastic composite specimens. As a result, the experimental methodology as well as strain rate dependent stiffness and strength properties within a strain rate range of 10 −5 up to 10 3 1/s are presented. A phenomenological 3D material model based on the Cuntze failure criteria, accounting for strain rate dependency and damage evolution is implemented in Abaqus/Explicit. The user defined material model (VUMAT) is used for finite element (FE) studies of the crash and impact experiments. Exemplary numerical predictions are presented and compared. |
| Databáze: | OpenAIRE |
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