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| Peridynamic rate-dependent constitutive model for impact damage of composite laminate |
| Received:July 01, 2015 Revised:September 02, 2015 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201606006 |
| KeyWord:peridynamics PD rate-dependent constitutive model composite laminates impact velocity damage |
| Author | Institution |
| 孙朝阳 |
南京航空航天大学 机械结构力学及控制国家重点实验室, 南京 |
| 黄再兴 |
南京航空航天大学 机械结构力学及控制国家重点实验室, 南京 |
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| Abstract: |
| A peridynamic rate-dependent constitutive equation is advanced based on the prototype microelastic brittle (PMB) model and the Kelvin-Voigt viscoelastic model.By means of the LAMMPS molecular dynamic code,we perform the simulations for the isotropic circular epoxy plate,the uni-directional composite laminate and the multi-directional composite laminate subjected to impact loading,and compare their impact resistance.Meanwhile,we analyze the damage on upper and lower surface of the multi-directional composite laminate subjected to impact loadings with various velocities.The results reveal the failure mechanism of composite laminate in the impacting process from low-velocity collision to high-velocity penetration. |