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基于DEFORM软件的楔横轧工艺设计模拟与仿真研究
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上传时间: 2012-05-07
详细说明： 基于DEFORM软件的楔横轧工艺设计模拟与仿真研究 目录 摘要 ................................................................................................................................................................ - 3 - 关键词：楔横轧；DEFORM；工艺设计；模拟仿真 ............................................................................... - 3 - Abstract .......................................................................................................................................................... - 4 - 1.1楔横轧工艺简介 ··········································· ····················· - 5 - 1.2楔横轧的发展及应用 ·························································· - 6 - 1.2.1国外发展情况 ....................................................................................................................... - 6 - 1.2.2国内发展情况 ....................................................................................................................... - 7 - 第2章 轧件设计 .......................................................................................................................................... - 8 - 2.1加工余量的确定 ································································ - 8 - 2.1.1径向加工余量来的确定 ....................................................................................................... - 8 - 2.1.2．轴向加工余量的确定 ........................................................................................................ - 8 - 2.2 轧件尺寸的计算 ······························································· - 9 - 2.3轧件的计算机描述 ····························································· - 9 - 第3章 楔横轧模具设计 ............................................................................................................................ - 10 - 3.1 毛坯与坯料尺寸的确定 ····················································· - 10 - 3.1.1毛坯尺寸 ............................................................................................................................. - 10 - 3.1.2直径与长度的确定 ............................................................................................................. - 10 - 3.2模具型腔设计 ·································································· - 11 - 3.2.1 热态毛坯尺寸 .................................................................................................................... - 11 - 3.2.2模具精整区型腔尺寸 ......................................................................................................... - 11 - 3.3模具孔型设计 ·································································· - 12 - 3.3.1成型方案 ............................................................................................................................. - 12 - 3.3.2计算断面收缩率与初选α、β ............................................................................................ - 12 - 3.3.3孔型几何尺寸设计 ............................................................................................................. - 13 - 第4章 仿真实验结果分析 ........................................................................................................................ - 15 - 4.1 仿真所用软件DEFORM-3D的介绍 ······································ - 15 - 4.1.1 DEFORM的发展 ............................................................................................................... - 15 - 4.1.2 DEFORM的特点 ............................................................................................................... - 16 - 4.1.3 DEFORM-3D应用举例 ..................................................................................................... - 16 - 4.1.4 DEFORM-3D软件的模块结构 ......................................................................................... - 17 - 4.2 起楔段轧件截面上的应变场特征 ········································· - 18 - 4.2.1 横截面上的应变分布 ........................................................................................................ - 18 - 4.2.2纵截面上的应变分布 ......................................................................................................... - 19 - 4.3展宽段轧件截面上的应变场特征 ·········································· - 21 - 4.3.2纵截面上的应变分布 ......................................................................................................... - 22 - 更多精彩毕业设计论文请咨询 QQ840468512 - 2 - 4.4 起楔段轧件截面上的应力场特征·········································· - 24 - 4.4.1 横截面上应力分布 ............................................................................................................- 24 - 4.4.2 纵截面上的应力分布 ........................................................................................................- 25 - 4.5 展宽段轧件截面上的应力场特征·········································· - 26 - 4.5.1横截面上的应力分布 .........................................................................................................- 26 - 4.5.2 纵截面上的应力分布 ........................................................................................................- 27 - 4.6不同工艺参数对空心轴类件轧制力的影响 ······························ - 28 - 结论 ..............................................................................................................................................................- 29 - 参考文献 ......................................................................................................................................................- 30 - 更多精彩毕业设计论文请咨询 QQ840468512 - 3 - 摘要 本文主要介绍了楔横轧成形技术与模拟仿真技术，并基于DEFORM分析软件对楔横轧的工艺设计进行了模拟仿真分析研究工作。最终得到的结论是：楔横轧时，圆形毛坯在连续转动中径向小变形量压缩，毛坯除轴向延伸外，径向也产生扩展，因而在毛坯的心部产生拉应力。当毛坯旋转时，若轴向阻力过大；毛坯横向扩展积累，心部的拉应力增加，当达到材料强度极限时，心部就出现超过允许级别的疏松甚至空腔，这是不允许的。 关键词：楔横轧；DEFORM；工艺设计；模拟仿真 ...展开收缩
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