CAJ | 학술논문

粗糙界面的法向接触振动与能量耗散特性对描述界面动力学机理具有重要的理论和实际意义。通过建立粗糙界面法向接触振动的动力学模型，提出了其法向接触振动响应特征量和振动能量耗散量的计算方法。基于粗糙表面的三维分形模型描述，构造了粗糙界面的接触力-变形关系式，并与Hertz接触模型的力-变形关系进行了对比分析；建立了粗糙界面接触振动系统的动力学方程，计算了不同表面形貌粗糙界面系统每周期的振动能量耗散率和累计能量耗散率；分析了粗糙界面法向接触振动的响应特征与能量耗散特性，从理论上对界面法向微动能量耗散的实验结果进行了解释，为描述接触界面的动力学机理提供了理论依据。
조조계면적법향접촉진동여능량모산특성대묘술계면동역학궤리구유중요적이론화실제의의。통과건립조조계면법향접촉진동적동역학모형，제출료기법향접촉진동향응특정량화진동능량모산량적계산방법。기우조조표면적삼유분형모형묘술，구조료조조계면적접촉력-변형관계식，병여Hertz접촉모형적력-변형관계진행료대비분석；건립료조조계면접촉진동계통적동역학방정，계산료불동표면형모조조계면계통매주기적진동능량모산솔화루계능량모산솔；분석료조조계면법향접촉진동적향응특정여능량모산특성，종이론상대계면법향미동능량모산적실험결과진행료해석，위묘술접촉계면적동역학궤리제공료이론의거。
The dynamic response and energy dissipation characteristics of a rough contact interface are of great importance for describing the interface dynamic mechanism.Here,the normal contact vibration model for a rough interface was proposed and the corresponding calculation method was presented to compute the normal contact dynamic responses and energy dissipation of a rough contact interface.Results of contact force and deformation were obtained using the finite element method and they were presented for a contact surface with varying topographies.Expression relating contact force and deformation was established and good correlation with the calculated results was obtained and the relation between contact force and deformation was compared with that for Hertz contact model.The dynamic equation was further established and the dynamic response quantities and energy dissipation characteristics for a contact interface with different surface topographies were determined.The obtained results explained theoretically the test results of energy dissipation observed for normal contact vibration.