减振橡胶疲劳黏滞生热的仿真分析

罗文波1,2,姜侠2,胡小玲1,2,黄友剑2

振动与冲击 ›› 2021, Vol. 40 ›› Issue (12) : 210-218.

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (12) : 210-218.
论文

减振橡胶疲劳黏滞生热的仿真分析

  • 罗文波1,2,姜侠2,胡小玲1,2,黄友剑2
作者信息 +

Simulation analysis of the hysteresis heat generation in damping rubber

  • LUO Wenbo1,2,JIANG Xia2,HU Xiaoling1,2,HUANG Youjian2
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文章历史 +

摘要

由于良好的超弹性和阻尼特性,橡胶作为减振材料已得到广泛应用。在循环载荷作用下,材料的黏滞损耗以热形式耗散,引起材料自热升温,进而影响材料的动态黏弹特性,这是一种热力耦合效应。采用一种修正的Kraus模型描述橡胶材料动态损耗模量随温度、载荷频率和应变幅值的变化规律,同时,依黏弹性理论给出循环受载橡胶的黏滞生热率,并编制相应的计算程序。通过Abaqus有限元软件的变形分析、热分析以及热力耦合迭代计算,模拟橡胶圆柱试样和橡胶沙漏减振弹簧的疲劳黏滞生热规律,得到了不同载荷频率和应变幅值下的温度场及自热温升的时间历程曲线,计算结果与试验测量值吻合良好。

Abstract

Rubber has been widely used as damping material due to its excellent hyperelasticity and damping properties.Under cyclic deformation, the hysteresis loss of the material dissipates as heat, which causes self-heating of the material, and then changes the dynamic viscoelastic properties of the material due to their temperature dependence.Thus, the cyclic deformation of rubber material is a thermomechanically coupling process in nature.A modified Kraus model was used to describe the variation of the dynamic loss modulus of rubber material with temperature, loading frequency and strain amplitude, then the hysteresis heat generation rate of the cyclic loaded rubber was given according to the theory of viscoelasticity and the corresponding calculation program was developed.Finally, the hysteresis heat generation behavior of rubber cylinder specimen and an hourglass rubber damper under cyclic load were analyzed through deformation analysis, thermal analysis and thermo-mechanical coupling iterative calculation with the ABAQUS finite element software, and the corresponding temperature field and the time history of the self-heating induced temperature rise were obtained for the cases of different load frequencies and strain amplitudes.It is shown that the numerical calculations are in good agreement with measured values.

关键词

橡胶 / 黏滞损耗 / 热力耦合 / 自热温升 / Kraus模型

Key words

rubber / hysteresis loss / thermomechanical coupling / self-heating temperature rise / Kraus model

引用本文

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罗文波1,2,姜侠2,胡小玲1,2,黄友剑2. 减振橡胶疲劳黏滞生热的仿真分析[J]. 振动与冲击, 2021, 40(12): 210-218
LUO Wenbo1,2,JIANG Xia2,HU Xiaoling1,2,HUANG Youjian2. Simulation analysis of the hysteresis heat generation in damping rubber[J]. Journal of Vibration and Shock, 2021, 40(12): 210-218

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