螺接搭接件的力学特性试验及三维有限元分析  

STUDY ON MECHANICAL PROPERTIES OF BOLTED JOINTS BASED ON EXPERIMENT AND THREE-DIMENSIONAL FINITE ELEMENT

作　　者：郁大照[1] 陈跃良[2] 柳文林[1] 贾忠湖[1] 高永[1] 

机构地区：[1]海军航空工程学院飞行器工程系,烟台264001 [2]海军航空工程学院青岛分院,青岛266041

出　　处：《机械强度》2011年第6期855-861,共7页Journal of Mechanical Strength

基　　金：国家自然科学基金资助项目(50675221)~~

摘　　要：在考虑螺栓与孔壁间的非线性接触、摩擦、干涉配合和螺栓预紧力等因素影响的基础上,利用非线性有限元软件MSC.Marc构建螺接搭接件的三维有限元分析模型。数值模拟结果与试验结果的对比表明,文中所建三维模型能有效地模拟搭接件的表面应变、载荷传递和第三弯矩等三维力学特性,同时搭接件的三维应力、应变特性及干涉配合和螺栓预紧力对载荷传递比的影响规律也进行了讨论,计算结果和结论可作为该类结构损伤容限设计的参考依据。Three-dimensional finite element model of a bolted joint has been developed in the non-linear finite element code MSC.Marc and attempts were made to validate it by comparing results with those of experiments and other finite element.Issues in modeling the contact between the joint parts,interference and pre-stress were presented.Experimental measurements of surface strains and load transfer ratio（LTR） were compared with results from finite element analysis.The results show that three-dimensional finite element model of bolted joint produces the result in close agreement with experimental results.Three-dimensional finite element analysis assists to study the effects of different parameters on the mechanical behaviour of single lap bolted joints.The simulated results may be serving as reference for damage tolerance design of the similar structures.

关 键 词：搭接件 力学特性 有限元法 干涉配合 

分 类 号：V215.6[航空宇航科学与技术—航空宇航推进理论与工程] O346.1[理学—固体力学]