| 轴向冲击载荷作用下锥壳中弹性应力波传播的计算和实验研究 |
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| 引用本文： | 陈裕泽,乐国培,经二力,薛金娣.轴向冲击载荷作用下锥壳中弹性应力波传播的计算和实验研究[J].力学学报,1987(2). |
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| 作者姓名： | 陈裕泽 乐国培 经二力 薛金娣 |
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| 作者单位： | 西南结构力学研究所
(陈裕泽，乐国培，经二力)，西南结构力学研究所(薛金娣) |
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| 摘 要： | 本文利用有限元分析和模型实验研究了在轴向冲击载荷作用下,锥壳中弹性应力波的传播、计算和实验结果表明,结构中存在着弹性纵波和弹性弯曲波的传播,它们传播的速度各不相同,使壳面承受不同的应力状态;讨论了纵波和弯曲波随壳面的衰减;实验指出,由于边界的影响,即使纵波的反射也会产生新的反射弯曲波沿锥面传播。
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| 关 键 词： | 冲击载荷 锥壳 弹性应力波 |
THE NUMERICAL AND EXPERIMENTAL RESEARCHES ON PROPAGATION OF ELASTIC STRESS WAVES IN A CONICAL SHELL UNDER THE AXIAL IMPULSIVE LOADING |
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| Chen Yuze,Le Guopei,Jing Erli,Xue Jindi.THE NUMERICAL AND EXPERIMENTAL RESEARCHES ON PROPAGATION OF ELASTIC STRESS WAVES IN A CONICAL SHELL UNDER THE AXIAL IMPULSIVE LOADING[J].chinese journal of theoretical and applied mechanics,1987(2). |
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| Authors: | Chen Yuze Le Guopei Jing Erli Xue Jindi |
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| Abstract: | The propagation of elastic stress waves in a conical shell subjected to the axial impulsive loading have been studied by means of finite element method and model experiment. Based on those results in this paper, it is shown that there are two axisymmetrical stress waves propagating with different velocities. One produced by membrane strain is called the longitudinal wabve, the other produced by bending deformation is called the bending wave. The attenuation theirs along the surface of shell is discussed. It can be found that the longitudinal wave and the bending wave generated by reflection are coupled when a longitudinal wave impinges on the fixed boundary of the shell and the two reflected waves will continue propagating with correspondent velocities separately in the structure. |
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| Keywords: | impulsive loading conical shell elastic stress wave |
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