| Autor: |
Xiao Nan Mao, Jing Wang, Weidong Song, Yuan Chao Gan, Qing Yu Yu |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Materials Science Forum. 833:141-144 |
| ISSN: |
1662-9752 |
| DOI: |
10.4028/www.scientific.net/msf.833.141 |
| Popis: |
A coupled model of damage and plasticity is presented to describe the dynamic behaviors of TiC-particulate reinforced titanium matrix composites (TiCp/TMCs) subjected to shock loadings. The TiCp/TMCs are assumed as homogeneous continuum with pre-existing micro-cracks and micro-voids. Damage to TiCp/TMCs is caused due to micro-crack nucleation, growth and coalescence, and defined as the probability of fracture at a given crack density. In terms of crack growth model, micro-cracks are activated, and begin to propagate gradually. When crack density reaches a critical value, the smashing destroy takes place. The model parameters for TiCp/TMCs are determined using plate impact experiments. Comparison with the test results shows that the proposed model can give consistent predictions of the dynamic behaviors of TiCp/TMCs subjected to impact loadings. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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