空气弹簧弹性特性及容积特性分析  

Analysis of Elastic Properties and Volume Feature of Air Springs

作　　者：郑明军[1] 张伟[1] 冯国胜[1] 

机构地区：[1]石家庄铁道大学机械工程学院,石家庄050043

出　　处：《噪声与振动控制》2010年第5期177-180,共4页Noise and Vibration Control

基　　金：河北省自然科学基金(E2009000904;E2009000925);河北省高等学校科研计划(2010279)

摘　　要：依据工程热力学理论得出了空气弹簧的弹力表达式,并分析了空气弹簧材料、几何和接触等非线性力学特性,提出采用非线性有限元研究空气弹簧非线性弹性特性和容积特性的方法。根据有限元方法建立了三曲囊式空气弹簧的有限元分析模型,进行了有限元计算,结果表明:空气弹簧的承载能力随充气压力增加而增大,且呈现出非线性特性;空气弹簧压力、容积及有效面积与变形均呈现出非线性关系,腔内压力和有效面积随空气弹簧变形量的增加而增加,但容积呈现相反变化趋势;充气压力对于空气弹簧容积和有效面积基本没有影响。Mathematical expression of air spring＇s elastic properties is established by virtue of the theory of engineering thermodynamics.The properties of physical nonlinearity,geometrical nonlinearity and contact nonlinearity of the air spring are analyzed.The finite element analysis is applied to study nonlinear characteristic and volume features of the air spring.The three-dimensional finite element model of a cysti-form air spring is established and analyzed.The results show that the inflation pressure,volume,effective area,and deformation of the spring are related nonlinearly one another.The load capacity of the air spring increases with the increasing of inflation pressure.Cavity pressure and the effective area increase,but the volume decreases,with increasing of the air spring＇s deformation.The volume and effective area of the spring are basically independent of the inflation pressure.

关 键 词：振动与波 空气弹簧 弹性特性 容积特性 非线性 有限元分析 

分 类 号：U453.33[建筑科学—桥梁与隧道工程] O322[交通运输工程—道路与铁道工程]