| 移动的线源平稳随机荷载激励下梁的随机响应 |
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| 引用本文： | 孙璐,邓学钧. 移动的线源平稳随机荷载激励下梁的随机响应[J]. 力学学报, 1997, 29(3): 365-368. DOI: 10.6052/0459-1879-1997-3-1995-239 |
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| 作者姓名： | 孙璐 邓学钧 |
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| 作者单位： | 南京东南大学交通运输工程系 |
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| 基金项目： | 国家自然科学基金,国家教委博士点基金 |
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| 摘 要： | 利用广义Ｄｕｈａｍｅｌ积分和积分变换，研究了粘弹性Ｋｅｌｖｉｎ地基上无限长梁在运动的线源平稳随机荷载作用下的随机响应．发现此时梁的挠度响应为非平稳随机过程．通过引入随动坐标系，建立了有明确物理意义的随动谱分析方法，使随机位移响应在随动坐标系下成为平稳随机过程
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| 关 键 词： | 随动坐标系 公路路面 随机荷载 地基 无限长梁 |
RANDOM RESPONSE OF BEAM UNDER MOVING RANDOM LOAD IN THE LINE SOURCE FORM |
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| Sun Lu Deng Xuejun. RANDOM RESPONSE OF BEAM UNDER MOVING RANDOM LOAD IN THE LINE SOURCE FORM[J]. chinese journal of theoretical and applied mechanics, 1997, 29(3): 365-368. DOI: 10.6052/0459-1879-1997-3-1995-239 |
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| Authors: | Sun Lu Deng Xuejun |
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| Abstract: | By using generalized Duhamel's integral and integral transform, this paper investigates random response of an infinite beam on the Kelvin viscoelastic foundation subjected to a moving load. It's found that displacement response of the beam is a non stationary random process even if the moving load is a stationary process. The follow up coordinate system is established to make the displacement became a stationary random process. |
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| Keywords: | generalized Duhamel's integral follow up coordinate system spectral analysis moving load infinite beam |
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