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Study on Control of Inclined Cable Vibration with Magnetorheologic Dampers
Author(s): YU Jianda1, 2, CHEN Zhengqing2, WANG Xiuyong2(1.schoolofcivilengineering, HUNAN Universityofscienceandtechnology, xiangtan, HUNAN 411201, china, 2.SCHOOL Ofcivilengineering, HUNAN University, changsha, HUNAN 410082, china)
Pages: 37-
39
Year: 2007
Issue:
2
Journal: Journal of Shandong University of Science and Tech
Keyword: 斜拉桥; 拉索; MR阻尼器; 振动控制; 有限元;
Abstract: 在磁流变(magnetorheologic简称MR)阻尼器力学特性试验的基础上,建立了能够很好地描述MR阻尼器非线性滞回特性的非线性参数模型,该模型由一个改进的Bingham模型和一个非线性弹簧单元串联而成。对MR阻尼器-拉索系统编写了非线性有限元动力分析程序,以一根实际的拉索为例,计算了MR阻尼器不同参数时对拉索的减振效果,计算结果与试验结果吻合。有限元计算结果表明:优化阻尼力随拉索频率的降低而提高;随着拉索振动幅度的减小,拉索减振的最优阻尼力减小。
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