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窄带随机噪声激励下线性碰撞系统的响应

戎海武 王向东 罗旗帜 徐伟 方同

戎海武, 王向东, 罗旗帜, 徐伟, 方同. 窄带随机噪声激励下线性碰撞系统的响应[J]. 应用数学和力学, 2011, 32(9): 1084-1091. doi: 10.3879/j.issn.1000-0887.2011.09.007
引用本文: 戎海武, 王向东, 罗旗帜, 徐伟, 方同. 窄带随机噪声激励下线性碰撞系统的响应[J]. 应用数学和力学, 2011, 32(9): 1084-1091. doi: 10.3879/j.issn.1000-0887.2011.09.007
RONG Hai-wu, WANG Xiang-dong, LUO Qi-zhi, XU Wei, FANG Tong. Subharmonic Response of a Single-Degree-of-Freedom Linear Vibroimpact System to a Narrow-Band Random Excitation[J]. Applied Mathematics and Mechanics, 2011, 32(9): 1084-1091. doi: 10.3879/j.issn.1000-0887.2011.09.007
Citation: RONG Hai-wu, WANG Xiang-dong, LUO Qi-zhi, XU Wei, FANG Tong. Subharmonic Response of a Single-Degree-of-Freedom Linear Vibroimpact System to a Narrow-Band Random Excitation[J]. Applied Mathematics and Mechanics, 2011, 32(9): 1084-1091. doi: 10.3879/j.issn.1000-0887.2011.09.007

窄带随机噪声激励下线性碰撞系统的响应

doi: 10.3879/j.issn.1000-0887.2011.09.007
基金项目: 国家自然科学基金资助项目(10772046;50978058);广东省自然科学基金资助项目(7010407;05300566)
详细信息
    作者简介:

    戎海武(1966- ),男,浙江宁波人,教授,博士(联系人.Tel:+86-757-82984643;E-mail:ronghw@foshan.net).

  • 中图分类号: O324

Subharmonic Response of a Single-Degree-of-Freedom Linear Vibroimpact System to a Narrow-Band Random Excitation

  • 摘要: 研究了单自由度线性单边碰撞系统在窄带随机噪声激励下的次共振响应问题.用Zhuravlev变换将碰撞系统转化为连续的非碰撞系统,然后用随机平均法得到了关于慢变量的随机微分方程.在约束距离为0时,用矩方法给出了系统响应幅值二阶矩的解析表达式.在约束距离不为0时,近似地得到了系统响应幅值二阶矩的解析表达式.讨论了系统阻尼项、窄带随机噪声的带宽和中心频率以及碰撞恢复系数等参数对于系统响应的影响.理论计算和数值模拟表明,系统响应幅值将在激励频率接近于次共振频率时达到最大,而当激励频率逐渐偏离次共振频率时,系统响应迅速衰减.数值模拟表明提出的方法是有效的.
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出版历程
  • 收稿日期:  2010-11-12
  • 修回日期:  2011-06-16
  • 刊出日期:  2011-09-15

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