考虑层间摩擦的多层波纹管轴向刚度非线性有限元分析  

Nonlinear Finite Element Analysis of Multilayer Bellows,Axial Stiffness Considering the Influence of Inter-layer Friction

作　　者：王帅[1] 王建军[1] 李楚林[2] 于长波[1] 

机构地区：[1]北京航空航天大学能源与动力工程学院,北京100083 [2]中国运载火箭技术研究院十一研究所,北京100076

出　　处：《压力容器》2007年第12期12-15,32,共5页Pressure Vessel Technology

摘　　要：利用ANSYS程序接触有限元方法对4层U型波纹管轴向刚度的线性和非线性特性进行了研究。首先建立了轴对称弹性单元(solid element)与接触单元组合的有限元模型,然后计算得到了该多层波纹管的刚度特性,尤其是在压缩时的非线性刚度,并且讨论了不同层间接触摩擦状态的影响,分析说明了多层间接触摩擦使波纹管轴向刚度具有非线性特征的机理。Using the contact finite element method of ANSYS, the linear and nonlinear characteristics of the multilayer U -shaped bellows＇ axial stiffness are investigated in the presented paper. The finite element model of the bellows is constituted of axial symmetry elements and contact elements. The features of the stiffness, especially the nonlinear stiffness when the compress load is applied, are obtained by computation. The influence of the inter - layer friction on the axial nonlinear stiffness is discussed and explained.

关 键 词：多层波纹管 层间接触摩擦 接触有限元 轴向非线性刚度 

分 类 号：TH703.2[机械工程—仪器科学与技术] O241.82[机械工程—精密仪器及机械]