摘要
针对风机叶片大型化引起的非线性效应显著问题,对大型风机叶片进行基于几何精确梁理论的弯曲振动动力学建模,将叶片视为欧拉-伯努利(Euler-Bernoulli)梁,对叶片的动能、弹性势能、重力势能、所受气动载荷及其做功进行推导,利用哈密顿原理建立其非线性动力学方程。将理论计算与ABAQUS有限元模型计算的固有频率进行对比,验证所推导理论模型的正确性与科学性。通过比较有无蜂窝结构填充时风机叶片振动的最大挠度,说明蜂窝填充能够有效减少叶片振动并提升风力发电机运行能力。
In response to the significant nonlinear effects caused by the large-scale development of wind turbine blades,dynamic modeling of the bending vibration of large wind turbine blades was established based on the geometrically exact beam theory.The blade was considered an Euler-Bernoulli beam,and the kinetic energy,elastic potential energy,gravitational potential energy,aerodynamic loads acting on the blade,and the work done by these loads were derived.The nonlinear dynamic equations were then formulated using Hamilton′s principle.The natural frequencies obtained from theoretical calculations and the ABAQUS finite element model were compared to validate the correctness and scientific soundness of the derived theoretical model.By comparing the maximum deflection of wind turbine blade vibrations with and without honeycomb structure filling,it is demonstrated that honeycomb filling can effectively reduce blade vibration and enhance the operational capability of the wind turbine.
作者
王谦
张君华
WANG Qian;ZHANG Junhua(College of Mechanical and Electrical Engineering,Beijing Information Science&Technology University,Beijing 100192,China)
出处
《北京信息科技大学学报(自然科学版)》
2026年第1期37-47,I0001,I0002,I0003,共14页
Journal of Beijing Information Science and Technology University(Science and Technology Edition)
基金
国家自然科学基金项目(12272057,12372004)
河北省自然科学基金项目(A2023202041)。
关键词
风力发电机叶片
MW级
动力学方程
有限元仿真
蜂窝填充
wind turbine blades
MW-level
dynamic equations
finite element simulation
honeycomb filling
