谐激励作用下输流曲管的混沌振动研究

被引:5
作者
倪樵
王琳
黄玉盈
何玉明
机构
[1] 华中科技大学力学系
关键词
输流曲管; 谐激励; 分岔; 混沌; 微分求积法;
D O I
10.19636/j.cnki.cjsm42-1250/o3.2005.03.001
中图分类号
TB533 [振动与噪声的发生];
学科分类号
摘要
研究了谐激励作用下输流曲管在系统参数区域内的混沌振动.基于牛顿法导出了输流曲管模型的非线性控制方程,并利用微分求积法对此方程在空间域进行离散,导出了输流曲管的非线性动力学方程组.在此基础上,对输流管道的动力响应进行了数值模拟.采用分岔、相平面、时间历程和庞加莱映射图等手段分析发现,在流速和激励频率的参数区域内,系统将可能发生包括混沌振动在内的多种运动形式.系统可经由倍周期分岔或概周期运动通向混沌.分析结果为工程输流管道模型的合理设计提供了参考.
引用
收藏
页码:249 / 255
页数:7
相关论文
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