摘要
根据磁流变阻尼器阻尼力特性的试验结果,建立了非线性参数模型。该力学模型由改进的Bingham单元(库仑摩擦单元与非线性粘滞单元并联)、非线性弹簧单元和质量单元串联而成。非线性参数模型能够很好地模拟阻尼力的滞回特性,对小速度时的阻尼力-速度关系也能很好地描述。模型中各参数物理意义明确,参数α和β描述了阻尼力分别与速度和位移的非线性关系。
A nonlinear parameter model is proposed to describe the dynamic performance of a magnetorheological(MR) damper according to its experiment results.The model consists of an improved Bingham element(a frictional element in parallel with a nonlinear dashpot) in series with a nonlinear spring element and a mass element.The proposed model predicts very well the hysteretic features of the damping force and the relation between the damping force and the velocity when the velocity magnitude is small,compared with the corresponding experimental data.The physical meaning of each parameter is explicit,two parameters αand β decribe the steady nonlinear relation of damping force versus veloci-ty and damping force versus displacement,respectively.
出处
《振动与冲击》
EI
CSCD
北大核心
2007年第4期14-17,共4页
Journal of Vibration and Shock
基金
国家自然科学基金资助(编号50578063
50178013)
