摘要
设计了面向空间复杂拼缝的激光焊接的8轴激光焊接实验平台,为了满足激光焊接的加工要求,达到所要求的精度和稳定性,运用有限元方法对其进行设计和优化。首先将原始设计方案三维模型导入ANSYS中,运用有限元优化设计方法建立该平台的有限元模型,并进行了重要零部件及整机的模态分析,主要分析了前8阶固有频率和振型,找出了其中的薄弱环节,并进行结构优化设计,提高了平台的动态性能。最后通过大量相关实验对该平台性能进行了验证,结果论证了该有限元模型的有效性和正确性。
A 8-axis laser welding experimental platform is designed and introduced for complex 3D seam welding in it.And in order to reach the requirement of the laser welding,such as the accuracy and the stability of the platform,finite element method is applied in designing and optimizing the platform.First a 3D model for original design proposal is imported into the ANSYS to build a finite element model of the platform with the finite element optimal design method,and the modal analysis for key parts and the whole unit is conducted.Then the first eight natural frequencies and mode of vibration of the platform are analyzed to find the weaknesses of the platform.Furthermore,the structure design is optimized to improve the dynamic performance of the platform.Finally,the more relative experiments are carried out,which result rectifies the effectiveness and the correctness of the finite element model.
出处
《机械设计与制造》
北大核心
2011年第10期58-60,共3页
Machinery Design & Manufacture
基金
国家自然科学基金资助项目(50875097/E051005)
关键词
焊接机床
有限元分析
模态分析
动态性能
优化设计
Laser machine tool
Finite element analysis
Mode analysis
Dynamic performance
Optimization design
