基于本构模型的橡胶衬套刚度分析
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摘要
选取Mooney-Rivlin、YEOH和Ogden三种超弹性本构模型,以橡胶材料基本力学实验数据为基础,识别出三种本构模型的参数。建立汽车悬架橡胶衬套有限元模型,以三种本构模型设置材料属性,计算了橡胶衬套轴向、径向和扭转三个方向的静态力学特性。结果表明,在小变形范围内,YEOH对橡胶衬套轴向变形仿真效果较好,Mooney-Rivlin模型对径向和扭转变形仿真效果较好。
Using hyperelastic constitutive models of Mooney-Rivlin,YEOH and Ogden,with the mechanic experiment data of rubber material,the parameters of the 3 models are calculated.A finite element model of rubber bushing in a vehicle suspension system is built and its material characteristics are determined by the parameters of constitutive model.So the axial,radical and torsional static mechanic characteristics of rubber bushing are obtained.It's shown that the constitutive model YEOH has the best simulation accuracy in axial deformation of the rubber bushing,with the Mooney-Rivlin excellent in radical and the torsional deformation.
Using hyperelastic constitutive models of Mooney-Rivlin,YEOH and Ogden,with the mechanic experiment data of rubber material,the parameters of the 3 models are calculated.A finite element model of rubber bushing in a vehicle suspension system is built and its material characteristics are determined by the parameters of constitutive model.So the axial,radical and torsional static mechanic characteristics of rubber bushing are obtained.It's shown that the constitutive model YEOH has the best simulation accuracy in axial deformation of the rubber bushing,with the Mooney-Rivlin excellent in radical and the torsional deformation.
引文
[1]PUEL G,BOURGETEAU B,AUBRY D.Parameter Identification of Nonlinear Time-dependent Rubber Bushings Models towards Their Integration in Multibody Simulations of a Vehicle Chassis[J].Mechanical Systems and Signal Processing,2013,(36):354-369.
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[3]石少亮,吴伟蔚,黄虎,等.车用橡胶衬套的非线性有限元分析[J].机械设计与制造,2011,(9):30-32.
[4]黄建龙,解广娟,刘正伟.基于Mooney-Rivlin模型和Yeoh模型的超弹性橡胶材料有限元分析[J].橡胶工业,2008,55(8):467-471.
[5]上官文斌,吕振华.汽车动力总成橡胶隔振器弹性特性的有限元分析[J].内燃机工程,2004,24(6):50-55.
[6]王文涛,上官文斌,段小成.超弹性本构模型对橡胶隔振器静态特性预测影响的研究[J].汽车工程,2012,(6):544-550.
[7]王锐,李世其,宋少云.隔振橡胶本构建模研究[J].振动与冲击,2007,26(1):77-79.
[8]李树虎,贾华敏,李茂东,等.超弹性体本构模型的理论和特种试验方法[J].弹性体,2011,2l(1):58-64.
[2]SJOBERG M M,KARI L.Non-Linear Behavior of a Rubber Isolator System Using Fractional Derivatives[J].Vehicle System Dynamics,2002,(37):217-236.
[3]石少亮,吴伟蔚,黄虎,等.车用橡胶衬套的非线性有限元分析[J].机械设计与制造,2011,(9):30-32.
[4]黄建龙,解广娟,刘正伟.基于Mooney-Rivlin模型和Yeoh模型的超弹性橡胶材料有限元分析[J].橡胶工业,2008,55(8):467-471.
[5]上官文斌,吕振华.汽车动力总成橡胶隔振器弹性特性的有限元分析[J].内燃机工程,2004,24(6):50-55.
[6]王文涛,上官文斌,段小成.超弹性本构模型对橡胶隔振器静态特性预测影响的研究[J].汽车工程,2012,(6):544-550.
[7]王锐,李世其,宋少云.隔振橡胶本构建模研究[J].振动与冲击,2007,26(1):77-79.
[8]李树虎,贾华敏,李茂东,等.超弹性体本构模型的理论和特种试验方法[J].弹性体,2011,2l(1):58-64.