摘要结合有限元分析和计算机技术，通过模拟冲压成形过程，用数值分析来完善模具设计，可以使技术升级时间和模具测试成本降低。

消声器壳体是一个阶梯半圆柱件，为了得到该形件拉深成形的合适参数，本文首先介绍了拉深的工艺和国内对复杂件拉深成形的研究现状，然后从阶梯半圆柱件的成形特点分析了该零件拉深的关键问题，最后改变压边力、冲压速度、摩擦系数、圆角半径和拉延筋设置进行了单一变量仿真试验，从而得到了消声器壳体拉深的合适参数，为生产实际提供帮助。60325

毕业论文关键词：拉深成形，阶梯半圆柱件，Dynaform

毕业设计说明书（论文）外文摘要

Title  Finite ElementAnalysis and Process Optimization Of Muffler Shell Deep Drawing 

Abstract

Combined with the finite element analysis and computer technology, through the simulation of stamping process, using numerical analysis to improve the mold design can make technology upgrade time and mold test cost reduced. Muffler shell is a ladder half-cylinder part. In order to get the appropriate parameters of deep drawing parts, firstly, the deep drawing process and the domestic research status of complex deep drawing forming were introduced. Then from deep drawing forming characteristics analysis of the ladder half- cylindrical parts, the single variable simulation experiments were carried out by changing the blank holder force, punch velocity, friction coefficient, the radius and drawbead setting factors to get the ladder half cylindrical deep drawing appropriate parameters. It provided a practical help for production. 

Keywords：drawing processing,ladder half-cylindrical parts ,Dyanform

目   次

1  绪论 1

1.1  选题背景 1

1.2  复杂零件拉深成型的研究现状 2

1.3  课题研究意义及内容 3

1.4  论文的组织结构 4

2  消声器壳体拉深成形理论分析 5

2.1  消声器壳体的成形特点 5

2.2  消声器壳体拉深的关键问题 6

2.3  影响消声器壳体拉深成形的主要因素 7

2.4  消声器壳体的拉深方案 8

3  消声器壳体有限元建模分析 10

3.1  消声器壳体拉深成形有限元分析模拟流程 10

3.2  零件模型和板料尺寸的确定 10

3.3  拉深成形有限元分析步骤 12

3.4  后处理工作 13

4 消声器壳体拉深仿真及试验分析 14

4.1  具体方案设定 14

4.2  压边力对消声器壳体拉深的影响 15

4.3  冲压速度对消声器壳体拉深的影响 18

4.4  圆角半径对消声器壳体拉深成形的影响 21

4.5  摩擦系数对消声器壳体拉深的影响 23

4.6  设置拉延筋对消声器壳体拉深的影响 25

结论 28

致谢