学术
摘 要:
研究了碳纤维增强酚醛复合材料在不同温度下的动静态压缩力学性能,碳酚醛材料不但是应变率敏感材料,也是温度相关材料;提出了一个非线性粘弹性本构方程,通过对实验应力-应变曲线的拟合给出了本构方程的材料参数,讨论了温度对本构方程参数的影响;分析了材料力学行为的时温等效性,给出了不同加载条件下的时温等效曲线.[著者文摘]
文章出处:
《中国工程科学》-2006年8卷5期 -63-68页
栏目信息:
文献标识码:
A
文章编号:
1009-1742（2006）05-0063-06
Research on the Quasi-static and Dynamic Properties and Constitutive Relation of Carbon Fiber-reinforced Phenolic Composite
Zhang Tai, Wang Xiaojun, Wang Zhihai, Guo Yang, Wang Yuanbo （ University of Science and Technology of China, Department of Mechanics and Mechanical Engineering, Hefei 230027, China）
Abstract:
The quasi-static and dynamic compression properties of carbon fiber-reinforced phenolic composite are investigated by a series of MTS and SHPB tests. The results show that the material is rate-dependent and temperature-dependent. A new nonlinear viscoelastic constitutive model is proposed and the coefficients in the constitutive equation are obtained by the experiment stress-strain curves. The influence of temperature on the constitutive equation is remarkable, and its effects can be described by the material parameters related to temperature. Based on the consideration that the responses of the material to reducing strain rate and raising temperature are similar, the time-temperature equivalent law is investigaled and the corresponding equivalent curve under different loading conditions is approached.[著者文摘]
Key words:
carbon fiber-reinfoi＇ced phenolic composite; dynamic properties; viscoelasticity; constitutive model; time-temperature equivalent law
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