摘要
本文研究了基于非线性能量阱的深海柔性张力腿的振动抑制问题.考虑端部参数激励和非线性能量阱(NES)作用下的张力腿力学模型,采用哈密顿变分原理推导出非线性振动控制的运动微分方程,利用伽辽金法进行离散化.通过参数分析和数值仿真计算,得到柔性张力腿的横向位移模态振动响应,同时还对比分析了NES与调谐质量阻尼器的减振性能.结果表明,相同情况下NES具有更为显著的减振效果,并且可以通过调整NES吸振器的参数,达到最优振动控制效果.
In this paper,vibration suppression of deep-sea flexible tension legs based on nonlinear energy sink is studied.Considering a tension leg mechanical model with parametric excitation and nonlinear energy sink(NES),differential equation of motion for nonlinear vibration control is derived by using Hamiltonian variational principle,and the Galerkin method was used for discretization.The transverse displacement modal vibration response of the flexible tension leg is obtained by numerical simulation,and vibration damping performances of NES and TMD are compared.The results show that the nonlinear energy sink has a more significant damping effect.Vibration control can be improved by adjusting the parameters of NES absorber.
作者
童俊辉
彭剑
左云
马培源
孙洪鑫
王连华
Tong Junhui;Peng Jian;Zuo Yun;Ma Peiyuan;Sun Hongxin;Wang Lianhua(School of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;Hunan Provincial Communications Planning,Survey&Design Institute Co.,LTD.Changsha 410008;School of Civil Engineering,Hunan University,Changsha 410082,China)
出处
《动力学与控制学报》
2023年第1期30-35,共6页
Journal of Dynamics and Control
基金
国家自然科学基金资助项目(51778228,52078210)
湖南省自然科学基金资助项目(2021JJ10003)
湖南省教育厅资助项目(19B192)。
关键词
张力腿
非线性能量阱
吸振器
振动抑制
tension leg
nonlinear energy sink
vibration absorber
vibration control
