金属橡胶材料迟滞特性力学模型研究  

Study on the Mechanical Model for Hysteresis Characteristics Analysis of Metal Rubber Materials

作　　者：邹龙庆[1] 曹义威 付海龙[1] 王玥[1] ZOU Longqing;CAO Yiwei;FU Hailong;WANG Yue(College of Mechanical Science and Engineering,Northeast Petroleum University,Daqing 163000,Heilongjiang China)

机构地区：[1]东北石油大学机械科学与工程学院

出　　处：《噪声与振动控制》2019年第6期1-5,199,共6页Noise and Vibration Control

基　　金：东北石油大学国家自然科学基金培育基金重点资助项目(2017PYZL-04)

摘　　要：受成型与制备工艺参数影响,金属橡胶有记忆型恢复力模型数学表达式复杂,特别是在对非线性迟滞特性参数进行识别时存在困难。根据金属橡胶微元体理论,研究干摩擦力对迟滞特性力学模型的影响。应用材料细观结构特征构造金属丝微元体力学模型,描述了金属丝滑移接触过程中干摩擦产生机理,结合金属橡胶制备工艺计算处于滑移状态的微元体数目,建立金属橡胶干摩擦阻尼力数学表达式。利用静态激励试验系统进行试验研究,并结合MATLAB软件对该理论模型进行参数识别。通过理论与试验结果对比,验证了模型的正确性。结果表明:含干摩擦分量的有记忆恢复力模型适用性强,表达式简单,特别是在参数识别时具有较好的精度。Due to the influence of processing parameters in material forming and preparation,the mathematical expres-sions of the mnemonic restorative force model of metal rubber are very complex,and it is difficult to identify the nonlinear hysteresis characteristic parameters of the material.In this paper,the effect of dry friction on the mechanical model of hyster-esis characteristics was studied by using the theory of metal rubber microelement.A mechanical model of metal wire micro-element was constructed based on material microstructure characteristics,and the mechanism of dry friction in the process of metal wire sliding contact was described.The number of microelements in slip state was calculated according to the prepara-tion technology of the metal rubber,and the mathematical expression of dry friction restoring force of metal rubber was es-tablished.The static excitation test system was used for experimental research,and MATLAB software was used to identify the parameters of the theoretical model.Through the comparison of the theoretical results with the experimental results,the correctness of the model was verified.The results show that the memory restorative force model with dry friction component has strong applicability and simple expression.Especially,it has higher accuracy in parameter identification.

关 键 词：振动与波 金属橡胶 迟滞模型 微元结构 干摩擦 简谐激励 

分 类 号：TB535[理学—物理]