摘要
为减小风电机组门洞焊缝承受的最大应力,提高焊缝的使用寿命,以ANSYS为分析平台,结合二次拉格朗日非线性规划优化方法对门洞焊缝进行尺寸优化。对优化前后的门洞焊缝进行强度分析和疲劳分析的结果表明,在满足尺寸和强度设计要求的条件下,优化后门洞焊缝的最大Von-Mises应力明显降低且使用寿命提高。基于二次拉格朗日非线性规划优化方法的尺寸优化可以减少迭代次数,节省设计成本,在减小结构应力和提高结构性能等方面对机械零部件的优化设计有较大借鉴意义。
In order to reduce the maximum stress of the door weld of wind turbines,and improve the service life of the weld,the Nonlinear Programming by Quadratic Lagrangian(NLPQL)optimization and ANSYS are used simultaneously.The strength analysis and fatigue analysis have been taken and the results show that the maximum Von-Mises of the optimized weld is greatly reduced and the service life is improved as well as meeting the design requirements of both size and strength.The iteration and the design cost are reduced when the size optimization based on the Nonlinear Programming by Quadratic Lagrangian(NLPQL)is taken.The method has great significance for reduction of the structural stress and promotion of the performance of the structure.
作者
李健
孙柳
焦凯
江涛
LI Jian;SUN Liu;JIAO Kai;JIANG Tao(College of Mechanical Engineering,Changzhou University,Jiangsu Changzhou 213164,China;Nanjing Wind Power Technology Co.Ltd.,Jiangsu Nanjing 210046,China)
出处
《机械设计与制造》
北大核心
2020年第12期194-197,共4页
Machinery Design & Manufacture
基金
江苏省科技厅产学研前瞻性项目资助(BY2016029-19)—大直径高强铝合金环锻件热变形行为分析及热轧过程有限元模拟。
关键词
门洞焊缝
尺寸优化
二次拉格朗日非线性规划
ANSYS软件
强度分析
Door Hole Welding
Size Optimization
Nonlinear Programming by Quadratic Lagrangian
ANSYS Software
Strength Analysis
