Dynamic Analysis of an Infinitely Long Beam Resting on a Kelvin Foundation under Moving Random Loads
发表时间：2019-03-12
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- 论文类型：
- 期刊论文
- 第一作者：
- Zhao, Y.
- 通讯作者：
- Zhao, Y (reprint author), Dalian Univ Technol, Fac Vehicle Engn & Mech, State Key Lab Struct Anal Ind Equipment, Dalian 116023, Peoples R China.
- 合写作者：
- Si, L.T.,Ouyang, H.
- 发表时间：
- 2017-01-01
- 发表刊物：
- SHOCK AND VIBRATION
- 收录刊物：
- SCIE、EI、Scopus
- 文献类型：
- J
- 卷号：
- 2017
- ISSN号：
- 1070-9622
- 摘要：
- Nonstationary random vibration analysis of an infinitely long beam resting on a Kelvin foundation subjected to moving random loads is studied in this paper. Based on the pseudo excitation method (PEM) combined with the Fourier transform (FT), a closed-form solution of the power spectral responses of the nonstationary random vibration of the system is derived in the frequency-wavenumber domain. On the numerical integration scheme a fast Fourier transform is developed for moving load problems through a parameter substitution, which is found to be superior to Simpson's rule. The results obtained by using the PEM-FT method are verified using Monte Carlo method and good agreement between these two sets of results is achieved. Special attention is paid to investigation of the effects of the moving load velocity, a few key system parameters, and coherence of loads on the random vibration responses. The relationship between the critical speed and resonance is also explored.
- 是否译文：
- 否
