弹性方柱中波的传播规律Ⅱ有限长方柱的瞬态响应

北京大学学报（自然科学版）

弹性方柱中波的传播规律
Ⅱ有限长方柱的瞬态响应

魏建萍,苏先樾

北京大学湍流与复杂系统国家重点实验室，北京大学工学院力学与空天技术系，北京100871;

收稿日期:2007-09-04 出版日期:2008-09-20 发布日期:2008-09-20

Wave Propagation in Elastic Square Columns
ⅡTransient Response in Limited Square Column

WEI Jianping, SU Xianyue

State Key Laboratory of Turbulence and Complex Systems, Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing 100871;

Received:2007-09-04 Online:2008-09-20 Published:2008-09-20

摘要/Abstract

摘要： 在以前工作基础上对有限长方柱的瞬态响应进行了研究，得到了其在任意外力作用下解析形式的瞬态响应图。从绘制的图谱中能够清晰地看到柱面的翘曲变形和机械信号沿着拟P波、拟SV波和拟SH波通道中的传播过程。从这个封闭系统中发现了一些瞬态波传播的规律和特点。

关键词: 有限长方柱, 瞬态响应, 翘曲面, 封闭系统

Abstract: This is a continue work in studying the wave propagation in elastic square columns Based on the previous work, the transient response of the limited column was studied After obtaining the analytic transient response acted by arbitrary external force, the warped surface in the terminal and the mechanical signs propagating processes in the channels formed by the Quasi-P, Quasi-SV and Quasi-SH waves were clearly displayed in the plotted figures Some regularities of the wave propagation were found from this closed system

Key words: limited square column, transient response, warped surface, closed system

中图分类号:

O343
O347

魏建萍,苏先樾. 弹性方柱中波的传播规律
Ⅱ有限长方柱的瞬态响应[J]. 北京大学学报（自然科学版）.

WEI Jianping,SU Xianyue. Wave Propagation in Elastic Square Columns
ⅡTransient Response in Limited Square Column[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

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https://xbna.pku.edu.cn/CN/Y2008/V44/I5/683

[1]	魏建萍,苏先樾. 弹性方柱中波的传播规律 Ⅲ. 无限长方柱的瞬态响应[J]. 北京大学学报（自然科学版）, 2008, 44(6): 839-846.
[2]	魏建萍,苏先樾. 用积分平均方法求解压电圆柱壳内波的轴向传播[J]. 北京大学学报（自然科学版）, 2005, 41(1): 76-81.