汽车发动机支座支架冲压成形工艺参数的优化
Optimization of Stamping Forming Process Parameters on Automobile Engine Support Bracket
赵博宁 1肖振权 2陈龙2
作者信息
- 1. 柳州铁道职业技术学院智能制造学院,广西 柳州 545616
- 2. 柳州工学院汽车技术学院,广西 柳州 545000
- 折叠
摘要
汽车发动机支座支架属于汽车覆盖件的一种,它关系着发动机能否正常平稳工作.在冲压成形的过程中十分容易产生起皱、破裂、回弹和变薄等缺陷.基于这些问题,本文首先确定冲压工艺方案,采用Dynaform有限元方法,建立其有限元模型,研究其冲压成形时应力应变状态,厚度变化与成形质量的关系,通过成形极限指标进行预成形质量评估.通过正交实验找到冲压成形的工艺参数的最优值,以最大减薄率和最大增厚率作为优化指标,然通过成形极限指标对优化后的成形质量进行了评估,最后将优化前后冲压成形的成形质量进行了对比分析,进行调整各种参数得到优化的方案,为实际应用时冲出合格产品做参考.
Abstract
The engine bracket is a type of automotive parts that is critical to the smooth operation of the en-gine.Defects such as wrinkling,cracking,springback,and thinning are prone to occur during the stamping process.In view of these issues,this paper first establishes a stamping process plan and adopts the Dynaform fi-nite element method to build a finite element model.The stress-strain state,thickness variation,and forming quality during stamping are studied,and pre-forming quality evaluation is conducted using forming limit criteria.The optimal values of the stamping process parameters are identified through orthogonal experiments,with max-imum thinning rate and maximum thickening rate as the optimization objectives.The forming quality after opti-mization is evaluated based on the forming limit criteria.Finally,a comparative analysis of the forming quality before and after optimization is performed to adjust various parameters and obtain an optimized solution,provi-ding reference for achieving qualified products in practical applications.
关键词
冲压成形/Dynaform/汽车发动机支座支架/正交试验Key words
Forming by stamping/Dynaform/Automobile engine support bracket/Orthogonal test引用本文复制引用
出版年
2024
NETL
NSTL
万方数据