Analytical Approximate Solutions To Large-Amplitude Free Vibrations Of Uniform Beams On Pasternak Foundation

Analytical Approximate Solutions To Large-Amplitude Free Vibrations Of Uniform Beams On Pasternak Foundation
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帕斯捷尔纳克地基均匀梁大振幅自由振动的解析近似解

DOI:
10.1142/s1758825114500756
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发表时间:
2014-12
影响因子:
3.5
通讯作者:
Wu Baisheng
Wu Baisheng
中科院分区:
工程技术3区
文献类型:
--
作者:
Yu Yongping;Wu Baisheng

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本文研究的是帕斯捷尔纳克地基上端部轴向不可移动的简支夹紧均匀梁的大振幅振动行为。牛顿法和谐波平衡法的结合用于处理这些振动。针对帕斯捷尔纳克基础的两个刚度参数的不同值(小振幅和大振幅),给出了梁的非线性频率和周期解的明确且简短的分析近似。解析近似结果与数值积分方案的结果非常吻合。由于表达式简洁,本文的解析近似解便于研究各种参数对梁大振幅振动响应的影响。
This paper is concerned with the large-amplitude vibration behavior of simply supported and clamped uniform beams, with axially immovable ends, on Pasternak foundation. The combination of Newton's method and harmonic balance one is used to deal with these vibrations. Explicit and brief analytical approximations to nonlinear frequency and periodic solution of the beams for various values of the two stiffness parameters of the Pasternak foundation, small as well as large amplitudes of oscillation are presented. The analytical approximate results show excellent agreement with those from numerical integration scheme. Due to brevity of expressions, the present analytical approximate solutions are convenient to investigate effects of various parameters on the large-amplitude vibration response of the beams.
DOI: 10.1016/j.ijnonlinmec.2006.01.006
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