| 动力机器基础振动的Lysmer理论法与有限元法的对比研究 |
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| 引用本文： | 范留明,朱飞. 动力机器基础振动的Lysmer理论法与有限元法的对比研究[J]. 西安理工大学学报, 2011, 27(1): 56-61 |
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| 作者姓名： | 范留明 朱飞 |
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| 作者单位： | 1. 西安理工大学水利水电学院,陕西西安,710048
2. 青海省环境地质勘察局,青海西宁,810007 |
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| 基金项目： | 陕西高校省级重点实验室重点科研计划基金资助项目 |
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| 摘 要： | 采用有限元数值方法与理论计算法的对比研究,提出了一种验证动力机器基础Lysmer理论适用性的分析方法。首先根据二阶常系数非齐次微分方程理论,推求得到Lysmer方程的理论解,建立了动力基础的理论模型和相同条件下有限元数值试验模型,并分别采用有限元数值计算和理论计算得到在相同外周期动荷载作用下两种模型的位移历时曲线。计算结果发现,两种位移历时曲线的总体形状、初始相位和振动频率均非常接近,振幅之间存在明显的线性关系,反映出两者之间具有良好的可比性。
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| 关 键 词： | 动力机器基础 Lysmer方程 动力有限元 位移时程 |
Comparison of Lysmer Equation Method with FEM for Vibration of Dynamic Machine Foundation |
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| FAN Liuming,ZHU Fei. Comparison of Lysmer Equation Method with FEM for Vibration of Dynamic Machine Foundation[J]. Journal of Xi'an University of Technology, 2011, 27(1): 56-61 |
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| Authors: | FAN Liuming ZHU Fei |
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| Affiliation: | FAN Liuming1,ZHU Fei2 (1.Faculty of Water Resources and Hydroelectric Engineering,Xi'an University of Technology,Xi'an 710048,China,2.Administration of Environment Geology Survey of Qinghai Province,Xining 810007,China) |
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| Abstract: | An adaptable analysis method for testing Lysmer theory of dynamic machine foundation is suggested using the comparative research algorithm of FEM numerical method and theoretical computation method in this paper.The theoretical solution to Lysmer equation is deduced based on the non-homogeneous differential equation theory of the second-order constant coefficient,and then the theoretical model for vibration of dynamic machine foundation and the finite element numerical model under the same condition are bui... |
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| Keywords: | dynamic machine foundation Lysmer equation FEM displacement time interval |
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