基于ANSYS LS-DYNA的连续正反拉深成形有限元模拟研究  

Forming simulation and analysis of continuous positive and negative drawing based on ANSYS LS-DYNA

作　　者：孙佳楠[1] 吕永锋[1] 范建蓓[1] 

机构地区：[1]浙江机电职业技术学院机械工程学院,浙江杭州310053

出　　处：《机电工程》2016年第2期183-186,共4页Journal of Mechanical & Electrical Engineering

摘　　要：针对采用有限元模拟方法对连续拉深成形模拟过程中,"后续模拟过程不能继承上一步模拟结果,每次模拟均为独立流程,与连续拉深成形实际过程不符"的问题,对有限元连续拉深模拟过程、参数设置、前后处理等方面进行了研究,提出了基于ANSYS LS_DYNA的连续正反拉深的成形模拟方法和分析流程,通过采用APDL语句控制分析过程及相关参数设置,做到了参数化和通用化。提出并总结了模拟连续成形的技术关键点(该方法可应用于连续冲压成形有限元数值模拟,使连续成形可继承前步模拟结果),并在此基础上进行了后续的反拉深成形有限元模拟分析,做到了分析模拟的连续性。基于这种方法对典型正反拉深筒形制件进行了成形模拟。研究结果表明,该数值分析思路和方法可以实现多次连续冲压成形分析模拟,结果与实际情况较为符合。Aiming at the problems that the subsequent simulation process can not inherit the previous step simulation results and each simulation processes are independent which do not match the actual problem during finite element modeling method for continuous simulation deep drawing process,a continuous positive and negative drawing forming process simulation and analysis based on ANSYS LS_DYNA was proposed based on the study of the finite continuous deep drawing process,parameter setting and treatment before and after processing. Using APDL statement controlled the analysis process and related parameters,the parameterization and generalizing were done. The key technical points of simulating continuous forming was summarized,which could be applied to finite element numerical simulation of continuous stamping. Numerical results show that the numerical analysis idea could achieve multiple consecutive stamping simulation analysis,whose results were more in line with the actual situation.

关 键 词：正反拉深 连续成形 数值模拟 ANSYS LS-DYNA APDL 

分 类 号：TH166[机械工程—机械制造及自动化]