基于横观各向同性假定的固定结合部本构关系及有限元模型  

A Constitutive Law Based on Transverse Isotropic Hypothesis and Finite Element Model of Fixed Joints

作　　者：赵金娟[1] 王世军[1] 杨超[1] 王诗义 杨慧新[1] 

机构地区：[1]西安理工大学,西安710048

出　　处：《中国机械工程》2016年第8期1007-1011,共5页China Mechanical Engineering

基　　金：国家重点基础研究计划(973计划)资助项目(2009CB724406);陕西省科技厅科技统筹创新工程重点实验室资助项目(2014SZS10-P05)

摘　　要：提出了一种固定结合部的有限元建模方法。该方法将接触层等效成均质、虚拟的横观各向同性材料。根据结合面的变形和载荷关系,推导了虚拟材料本构矩阵中5个独立变量与法向应力之间的非线性关系。将这个本构关系引入到有限元分析中用以建立机器的固定联接面模型。分析结果与试验结果的对比证实了该方法的有效性。A finite element method modeling fixed joints was presented. In the method, the con- tact layers of the fixed joints were regarded as a homogenous virtual transverse isotropic material. Ac- cording to the relations among deformations and loads of joints, the nonlinear relations among 5 inde- pendent variables and normal stress in constitutive matrix were deduced, and then the relations were introduced into finite element analysis to model fixed joints. The analytical results and experimental results of the joints were compared and the validity of the method was confirmed.

关 键 词：固定连接 虚拟材料 有限元 本构关系 

分 类 号：TH123[机械工程—机械设计及理论]