聚碳酸酯微孔塑料的拉伸力学性能及本构关系  

Tensile mechanical properties and constitutive relation of microcellular polycarbonate

作　　者：卢子兴[1] 张慧[1] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100083

出　　处：《北京航空航天大学学报》2004年第3期202-205,共4页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学基金资助项目 ( 10 0 72 0 0 7);教育部留学回国人员科研启动基金资助项目 (教外司留 [2 0 0 1] 3 45 )

摘　　要：微孔泡沫塑料是一种特殊的发泡材料 ,具有许多独特的力学性能 .根据聚碳酸酯微孔泡沫塑料的拉伸实验数据 ,对材料的拉伸力学性能进行了研究 ,讨论了密度、应变率等因素对微孔泡沫塑料拉伸应力 应变关系的影响 ,并基于Boltz mann叠加原理利用松弛模量对拉伸应力 应变曲线进行了本构关系的拟合 。Microcellular plastics is a kind of special foamed plastic with some unique mechanical properties. On the basis of tensile test data of microcellular polycarbonate, some mechanical properties are investigated, including the effects of density and strain rate on the tensile stress-strain curves. Finally, the numerical fits to tensile constitutive relation of microcellular polycarbonate are performed by means of Boltzmann's principle and relaxation modulus. A good agreement between theoretical prediction and experimental data is obtained.

关 键 词：本构关系 应变率 微孔泡沫塑料 力学性能 

分 类 号：TB301[一般工业技术—材料科学与工程]