非连续粗糙多界面接触变形和能量损耗特性研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (6) : 83-89.

论文

非连续粗糙多界面接触变形和能量损耗特性研究

肖会芳，邵毅敏, 周晓君

作者信息 +

Contact Deformation and Energy Dissipation Characteristic on the Multi- layered Discontinuous Rough Interfaces

XIAO Hui-fang, SHAO Yi-min, Zhou Xiao-jun

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文章历史 +

摘要

非连续多层叠加结构的粗糙界面接触形变与能量损耗特性一项研究较少的难题。本文在单一界面能量损耗特性研究的基础上，通过建立“多层粗糙金属板--刚性平面”的多界面模型，采用有限元方法，对加载与卸载过程中，具有不同界面形貌、不同塑性变形行为和界面摩擦的多层叠加模型粗糙多界面的接触力和变形进行计算，研究了多层叠加结构粗糙界面上的接触力-变形关系，以及由塑性变形与界面摩擦引起的能量损耗特性，构造了描述粗糙多界面上接触力-变形关系表达式，计算了多层粗糙界面的能量传递损耗率，分析了多层叠加结构的非连续粗糙多界面接触变形机理和能量损耗特性。

Abstract

The contact deformation and energy dissipation characteristic are complicated problems at multi rough discontinuous contact interfaces. In this paper, the “multi-layered rough surface metal panels--rigid plane” model is proposed to study the contact force-deformation relation and energy dissipation characteristics at multi rough interfaces based on the work done on single interface. The concept of energy loss ratio is defined to describe the energy dissipation characteristics at different interfaces. The contact force and deformation results obtained using the Finite Element Method (FEM) for multi interfaces of different surface topography, different plastic deformation behaviors during the loading and unloading process are presented. The effect of friction is also investigated and comparisons are drawn with frictionless cases. Expressions relate contact force and deformation are established for both the loading and unloading process and good correlation with calculated results are obtained. The influences of surface topography, plastic deformation behaviors and friction on energy dissipation characteristics are also presented.

导出引用

肖会芳;邵毅敏;周晓君. 非连续粗糙多界面接触变形和能量损耗特性研究[J]. 振动与冲击, 2012, 31(6): 83-89

XIAO Hui-fang;SHAO Yi-min;Zhou Xiao-jun. Contact Deformation and Energy Dissipation Characteristic on the Multi- layered Discontinuous Rough Interfaces[J]. Journal of Vibration and Shock, 2012, 31(6): 83-89