金属橡胶材料宏观和细观力学模型  

MECHANICAL MODEL OF METAL RUBBER MATERIAL IN MACRO AND MICRO LEVEL

作　　者：李宇明[1] 彭威[1] 白鸿柏[1] 郑坚[1] 

机构地区：[1]军械工程学院火炮工程系,石家庄050003

出　　处：《机械工程学报》2005年第9期38-41,共4页Journal of Mechanical Engineering

基　　金：国家自然科学基金资助项目(50105021)。

摘　　要：用等效粘性阻尼理论和试验相结合,建立金属橡胶材料动态模型,把复杂的金属橡胶材料的阻尼耗能机理等效为粘性阻尼,金属橡胶的恢复力由高阶非线性多项式和等效的粘性阻尼力叠加而成;为了进一步研究刚度系数,从金属橡胶的变形特征出发,推导出金属橡胶材料应力应变关系的细观力学模型,通过试验对所建模型进行验证,结果表明:模型能很好描述金属橡胶材料在非线性振动系统的特性,模型中的参数值,对于研究金属橡胶材料的动态特性,具有重要的参考价值。The dynamical model of metal rubber material is established by using the equivalent viscous damping theory and experiment. In this way the complex damping mechanism of the metal rubber material can be equaled to the viscous damping. The resuming force of metal-rubber is overlapped by the high step and nonlinear polynomial which had equivalent viscousdamping force. In order to study the rigidity coefficient, considering the distortion character of metal rubber material, the stress and strain model is concluded. At last in the test it can be validated that the two models are very good to describe the nonlinear vibration systematic property. The parameters in model are worth for studying the dynamical property of metal rubber material.

关 键 词：金属橡胶 粘性阻尼 力学模型 应力应变 滞后曲线 

分 类 号：TB302[一般工业技术—材料科学与工程]