球面层状弹性轴承结构对其力学行为影响的有限元分析  

Finite Element Analysis for the Influence of Spherical Layered Elastomeric Bearing Structure on the Mechanical Behavior

作　　者：陈高升[1] 张连鸿 栗付平[1] 覃海鹰[3] 李满福[3] 

机构地区：[1]北京航空材料研究院,北京100095 [2]总参陆航部装备发展办公室,北京100083 [3]中国直升机设计研究所,江西景德镇333001

出　　处：《材料工程》2009年第10期15-19,共5页Journal of Materials Engineering

摘　　要：应用有限元分析方法,通过AYSYS软件对球面层状弹性轴承的力学行为进行了模拟,得到各胶层的应力分布规律,并分析了胶层厚度、注胶孔形状、截面形状三种结构因素对胶层应力分布的影响。研究结果表明:采用柱形注胶孔的第1层和第2层胶层的最大节点应力明显小于采用锥形注胶孔;胶层厚度的合理设计可有效地减小所有胶层的最大节点应力;采用弧形外缘的轴承可以减小胶层间应力的急剧变化,能够延长轴承的使用寿命。The mechanical behavior of spherical layered elastomeric bearing was simulated by ANSYS software using the finite element method, and the stress distribution in rubber layers was obtained. Effects of structure elements, such as shape of injection hole, thickness of rubber layers and profile of the elastomeric bearing, on the maximum node stresses of rubber layers were also analyzed. Results showed that the maximum node stresses in the first and second rubber layers of the bearing obtained by using the conic injection hole were less than that obtained by using the cylindrical injection hole. The maximum node stresses in all rubber layers could be reduced by proper design of the thickness of rubber layers. The dramatic changes of node stresses between rubber layers were decreased in the bearing with an arc profile, which could improve the life of the elastomeric bearing.

关 键 词：弹性轴承 有限元分析 应力集中 疲劳寿命 

分 类 号：V214.1[航空宇航科学与技术—航空宇航推进理论与工程]