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中文摘要：
分别在电子万能实验机和SHPB（split Hopkinson press bar）实验装置上对2D-C／SiC复合材料进行了静态、动态实验。探讨了该材料在10^-4～2．8×10^3s^-1的应变率范围内的层向压缩力学性能。实验结果表明．在动态加载条件下。2D-C／SiC复合材料的应力应变呈非线性关系。随着应变率的提高，破坏强度提高、失效应变减小。弹性模量增加。弹性模量与对数应变率基本呈线性关系。提出了一个含有与应变率相关的损伤变量的动态本构方程，该方程与实验结果吻合较好。
英文摘要：
The layer-directional.compressive mechanical properties of 2-demensional carbon-fiber-reinforced silicon carbide ceramic matrix composites （2D-C/SiC CMCs） were investigated at the strain rates of 10^-4 - 2.8 × 10^3 s^-1. The static experiments were done by using the electronic universal testing machine, and the dynamic experiments were done by using the SHPB system. The results show that the dynamic compressive stress-strain curve is non-linear. The failure strength and the elasticity modulus increase, and the failure strain decreases with the strain rate. The elastic modulus is linear to the logarithm of the strain rate. A new constitutive equation, in which the rate-dependent and damage-softening effects are considered, was proposed. This equation agrees well with the experimental results.
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