Quasi-static and dynamic mechanical properties of Kevlar/epoxy composite laminates and its constitutive equation

WANG Yuan-bo; WANG Xiao-jun; YU Yu-miao; HU Xiu-zhang

doi:10.11883/1001-1455(2008)03-0200-07

Volume 28 Issue 3

Sep. 2014

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WANG Yuan-bo, WANG Xiao-jun, YU Yu-miao, HU Xiu-zhang. Quasi-static and dynamic mechanical properties of Kevlar/epoxy composite laminates and its constitutive equation[J]. Explosion And Shock Waves, 2008, 28(3): 200-206. doi: 10.11883/1001-1455(2008)03-0200-07

Citation:

WANG Yuan-bo, WANG Xiao-jun, YU Yu-miao, HU Xiu-zhang. Quasi-static and dynamic mechanical properties of Kevlar/epoxy composite laminates and its constitutive equation[J]. Explosion And Shock Waves, 2008, 28(3): 200-206. doi: 10.11883/1001-1455(2008)03-0200-07

Citation:

WANG Yuan-bo, WANG Xiao-jun, YU Yu-miao, HU Xiu-zhang. Quasi-static and dynamic mechanical properties of Kevlar/epoxy composite laminates and its constitutive equation[J]. Explosion And Shock Waves, 2008, 28(3): 200-206. doi: 10.11883/1001-1455(2008)03-0200-07

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Quasi-static and dynamic mechanical properties of Kevlar/epoxy composite laminates and its constitutive equation

doi: 10.11883/1001-1455(2008)03-0200-07

1.
Department of Modern Mechanics, University of Science and Technology of China, Heifei 230007, Anhui, China;
2.
Department of Automotive Engineering, Tsinghua University, Beijing 100084, China

Publish Date: 2008-05-25

Abstract

Abstract

The MTS810 and SHPB were used to experimentally study the quasi-static and dynamic mechanical properties of Kevlar/epoxy composite laminates. Effects of the strain rate and lay-up types of fiber on the mechanical behaviors of laminated Kevlar were discussed. Based on the strain-rate curves of laminated Kevlar, an empirical constitutive equation was proposed in which the strain-rate hardening and damage softening effects of the material were taken into consideration. A stiffness-strengthened factor was introduced into the proposed constitutive equation to describe the influences of fiber lay-up types on the mechanical properties of the laminates. Results show that the introduced factor is reasonable in the fitted and experimental stress-stain curves.
- solid mechanics,
- constitutive equation,
- SHPB,
- Kevlar/epoxy composite laminates

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