基于振型分解法的风力机塔架抗震设计  

Study on anti-seismic design for wind turbine tower based on the modal decomposition method

作　　者：刘香[1] 高镇宁[1] 任文军 曹芙波[1] 

机构地区：[1]内蒙古科技大学建筑与土木工程学院,内蒙古包头014010 [2]中国二冶集团有限公司,内蒙古包头014010

出　　处：《广西大学学报（自然科学版）》2013年第1期36-41,共6页Journal of Guangxi University（Natural Science Edition）

基　　金：内蒙古自治区自然科学基金资助项目(SZDCCE09-08);内蒙古自治区高等学校科学研究项目(NJZY12102)

摘　　要：为研究风力机塔架体系各阶振型在任一时刻结构的变位中所占的分量,利用振型分解法,通过理论推导、逐步积分,实现对风力机塔架体系动力平衡方程的振型分解。分析结果表明,随着阶数的增加,每阶振型分量总体上依次减小,且各阶振型分量的差距悬殊,第1阶振型分量占到65%～90%。In order to study the proportion of each order mode of a wind tower in the deflection of the structure, the vibration modal decomposition of the dynamic equilibrium equation of the wind turbine tower is realized using the modal decomposition method with theoretical derivation and step-by-step integration. The results showed that the proportion of the modes was decreased in turn along with the increase of the order number, and the proportion of different modes had great disparity with the first order vibration mode accounting for 65% - 90%.

关 键 词：风力机塔架 模态分析 振型分解 振动 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]