园筒形工件一次拉深与变速变载变行程多次拉深工艺的优化设计+CAD图纸
毕业论文关键词：拉深；有限元仿真模拟；ABAQUS；
Cylindrical parts’s one-step drawing and its optimization design for multiple deep drawing with variable speed ,vaeiable load and variable stroke
Abstract: Drawing process as a very important modern industrial processing method , which is now widely used in manufacturing industries all over the world. In the process of machining, parts often requires multiple deep drawing, but the traditional processing method tends to produce defective parts, which would affect its processing quality. With the rapid development of computer-assisted simulation technology, such as the finite element simulation technology. Researching those influences on multiple deep drawing of cylindrical parts on variable speed , variable load and variable stroke is extremely meaningful in cylindrical parts stamping , prompting metal forming technology and reducing the cost of production stampings , as well as in improving the quality of parts, etc. This article will focus on the use of ABAQUS software on multiple deep drawing of cylindrical parts with variable forming speed, load and the stroke. And also analysis the material forming stress state and deformation patterns.
Key words: deep drawing; finite element simulation; ABAQUS;
目 录
1 绪论 1
1.1 课题介绍及选题目的1
1.1.1 课题介绍 1
1.1.2 选题目的 1
1.2 ABAQUS软件介绍 2
1.2.1 ABAQUS软件综述 2
1.2.2 ABAQUS的核心功能模块 4
1.2.3 ABAQUS/CAE模块 4
1.3 有限元数值模拟国内外的发展现状5
1.3.1 国外的发展情况 5
1.3.2 我国的发展情况 6
2 零件工艺参数计算 7
2.1 确定修边余量7
2.2 计算毛坯直径D7
2.3 判断是否采用压边圈7
2.4 确定拉深次数7
2.5 确定各工序件直径7
2.6 确定各次拉深工序的高度8
3 模具建模过程 9
3.1 建模过程9
3.1.1 基本组成构件的选择 9
3.1.2 有限元单元族的选择 10
3.1.3 材料属性的定义 10
3.2 各部件的有限元模型11
4 有限元分析过程的各部分设定13
4.1 装配体13
4.2 分析步13
4.3 接触15
4.4 载荷和边界条件16
5 网格划分 17
5.1 网格的概念及其作用17
5.2 网格划分17
6 图形比较分析 19
6.1 回弹前后的比较分析19
6.1 对比分析20
6.3 参数比较分析21
结论25
谢辞26
参考文献27
1 绪论
1.1 课题介绍及选题目的
1.1.1 课题介绍
本课题的目标是基于ABAQUS软件完成园筒形拉深件的变速、变载、变行程多次拉深的优化设计，掌握工程绘图以及计算机辅助模拟仿真软件的应用，是一个有机结合计算机辅助技术与课本相关有限元理论的课题。
本次的课题不仅牵涉到ABAQUS的建模知识，同时还包括了ABAQUS强大的CAE功能，而本人对于其仿真模拟的功能了解甚少，无疑，这次的课题是一个良好的学习机会。