海上风机塔筒应变响应预测研究  

Research on Strain Response Prediction of Offshore Wind Turbine Tower

作　　者：张威 张则荣[1] 张世强 ZHANG Wei;ZHANG Zerong;ZHANG Shiqiang(College of Electromechanical Engineering,Qingdao University of Science and Technology,Qingdao 266061)

机构地区：[1]青岛科技大学机电工程学院,青岛266061

出　　处：《舰船电子工程》2025年第3期178-181,191,共5页Ship Electronic Engineering

摘　　要：为预测海上风机塔筒在风载作用下的动应变,首先基于模态理论推导了风机塔筒的模态解耦公式,采用杜哈梅积分求解解耦后的振动方程,叠加得到系统的响应;利用有限元软件建立塔筒模型进行数值模拟,分析塔筒的位移模态和应变模态振型。仿真分析了额定风速时的塔筒位移和应变,分别基于位移测点和应变测点计算了塔筒模态坐标值,然后基于模态叠加法对塔筒应变进行了预测。对比结果表明基于位移测点计算的模态坐标值精确度更高,验证了基于模态叠加法预测风电塔筒动应变的可行性。In order to predict the dynamic strain of offshore wind turbine towers under wind loading,modal decoupling equa-tions are derived based on modal theory.The decoupled vibration equations are solved using Duhamel integration,and the system re-sponse is obtained by superimposing the solutions.A tower model is established using finite element software for numerical simula-tion,and the displacement modal and strain modal shapes of the tower are analyzed.The tower displacement and strain at rated wind speed are simulated,and modal coordinates are calculated based on displacement and strain measurement points.The modal super-position method is then applied to predict tower strain.Comparative analysis reveals higher accuracy in modal coordinates calculated based on displacement measurement points,validating the feasibility of predicting dynamic strain in wind turbine towers using the modal superposition method.

关 键 词：风机塔筒 模态叠加 位移模态 应变模态 应变响应 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] TK831[自动化与计算机技术—计算机科学与技术]