燃料电池复合材料结构螺纹孔联接的应力分析  

Stress analysis on thread hole in woven composite materials

作　　者：于平[1] 周平[1] 吴承伟[1] Lauren Seabrooks 

机构地区：[1]大连理工大学工程力学系 [2]Florida State University,USA 32313

出　　处：《电源技术》2007年第2期160-163,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金(10272028);高等学校博士学科点专项基金(20030141013)

摘　　要：在现代燃料电池、航空航天领域中大量使用各种复合材料。为了联接和固定这些复合材料的各个子结构和各类传感器等,燃料电池和航空航天复合材料在结构上经常采用大量的螺纹联接。利用有限元程序(ANSYS)分析了中厚板复合材料螺钉联接部的应力场,给出了螺纹牙的载荷分布图,研究了螺钉直径、复合材料的纤维体分比(体积分数比)、以及螺钉与复合材料之间的摩擦系数对螺纹牙根部圆角处的最大拉应力的影响。The composites are used widely in modern fuel cells and space, and many thread joints are used in the composite structures in order to connect and fix all kinds of substructures, sensors and etc. The contact process in the screw joint in the end plates of fuel cells was analyzed by FEM software, ANSYS. Distribution of load on the threads of the screw was given. The effects of the diameter of the screw, fiber volume fraction in end plates and friction coefficient between screw and composite on the largest tensile stress in the round chamfer were studied.

关 键 词：燃料电池 螺纹 有限元 应力分析 

分 类 号：TM911.4[电气工程—电力电子与电力传动]