摘要
针对大型风电机组轮毂结构优化设计中的边界条件问题,提出了"轮毂-轴承-叶片"整体拓扑优化弹性约束等效模型。变桨轴承联接叶片与轮毂,利用刚性杆等效滚动体与沟道的接触,建立变桨轴承等效模型,模拟轴承对力的传递;利用梁与连接件和被连接件刚性联接,建立轴承与轮毂和叶片的螺栓联接等效模型,模拟螺栓联接对力的传递;实现了轮毂结构优化模型中优化区域边界的弹性约束,以确保轮毂拓扑优化的准确性。针对某2.0MW风电机组轮毂进行优化设计,满足强度要求的同时,轮毂质量减轻10.4%,为轮毂的结构设计与优化提供了一定的参考依据。
To solve the boundary condition problem in structural optimization design of large-scale wind turbine hub,the ＂hub-bearing-blade＂overall topology optimization model based on elastic restraints is proposed. The blades and hub are connected by pitch bearings. Bearing equivalent model is established by using rigid rod which replaces the contact between the rolling element and the bearing grooves to simulate the force transmission of bearings. The bolted connection equivalent models between the bearing inner ring and the hub,as well as that between the bearing outer ring and the blades are found to simulate the force transmission of bolt joint by using rigid connection between beam and fittings. Therefore,optimization region boundary of hub structure optimization model is processed with elastic restraint to assure the accuracy of hub topology optimization. The 2. 0MW wind turbine hub optimization result achieved weight reduction by 10. 4%,while the strength requirement was also satisfied. The paper can provide a certain reference basis for the research of wind turbine hub structure design.
出处
《组合机床与自动化加工技术》
北大核心
2017年第3期33-37,共5页
Modular Machine Tool & Automatic Manufacturing Technique
基金
辽宁省科技创新重大专项项目:5MW及以上大功率风力发电机组配套轴承(201303006)
关键词
风电机组
轮毂
弹性边界
等效模型
结构设计
wind turbines
hub
elastic boundary
equivalent model
structure design
