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有限长Timoshenko梁弹性碰撞接触瞬间的动态特性
引用本文:邢誉峰.有限长Timoshenko梁弹性碰撞接触瞬间的动态特性[J].力学学报,1999,31(1):68-74.
作者姓名:邢誉峰
作者单位:北京航空航天大学固体力学所,100083
摘    要:给出了质点与有限长Timoshenko梁横向弹性碰撞接触问题的半解析解,分析了该碰撞问题在碰撞接触瞬间的动态响应特性:揭示了其中的波传播现象.

关 键 词:波传播  剪切  碰撞

THE CHARACTERISTICS OF TIMOSHENKO BEAM DURING THE PROCESS OF ELASTIC IMPACT AND CONTACT
Xing Yufeng.THE CHARACTERISTICS OF TIMOSHENKO BEAM DURING THE PROCESS OF ELASTIC IMPACT AND CONTACT[J].chinese journal of theoretical and applied mechanics,1999,31(1):68-74.
Authors:Xing Yufeng
Abstract:In this paper, the semi-analytical solutions for a particle impacting on simply-supported Timoshenko beam with finite length is obtained by using the method of mode superposition. The characteristics of impact loads varying with respect to time is given, several interesting conclusions about the impact loads are presented, and the exact values of impact loads at initial moment of impact is derived and verified. The propagating characteristics of longitudinal waves and shear waves in a finite-length beam is also presented. The influences of lateral shear waves and longitudinal waves on impact loads, shear forces and bending moment are thoroughly analyzed through numerical results. And it can be concluded from the results of this paper that the effects of shear waves on impact loads and impact-contact time is lager than that of longitudinal waves.
Keywords:shear  wave motion  impact
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