基于有限元的钢爪摩擦焊机床身结构设计及优化研究

Design and optimization of steel claw friction welding machine based on finite element

针对钢爪摩擦焊机床身结构设计的合理性及静、动态性能较差的问题,在钢爪摩擦焊机满足焊接工艺要求的基本条件下,设计出了钢爪摩擦焊机床身。在对床身结构进行了有限元分析的基础上,以壁板及肋板厚度作为设计变量,以静态特性为目标参数,对壁厚、肋板厚度等设计参数进行了灵敏度分析,得到了各参数对静态特性的影响趋势,根据灵敏度分析结果对初步设计的床身各项设计参数进行了改进;最终得到了改进后的钢爪摩擦焊机床身,并对其进行了有限元分析。研究结果表明:优化后钢爪摩擦焊机床身的静、动态性能都有一定程度的改善,并且其质量也有所降低。

Aiming at the rationality of the structural design of the steel frame friction welding machine bed and the problem of poor static and dynamic performance,on the basic condition of meeting welding process requirements of the steel claw friction welding machine,the steel claw friction welding machine bed was firstly designed. Based on the finite element analysis of the bed structure,the sensitivity of the design parameters,such as the thickness of the wall thickness and the thickness of the ribs,was analyzed regarding the static characteristics as the objective parameters,and the influence tendency of the parameters on static characteristics was obtained. Furthermore,according to the results of the sensitivity analysis,the design parameters of the initial design were improved. Finally,the improved steel claw friction welding machine bed was obtained,and its finite element analysis was carried out. The results indicate that the static and dynamic performance of the steel frame friction welding machine bed has some improvement and its quality is also reduced.