基于多步拉深成形的椭圆筒强度分析
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摘要
一种新颖的基于多步拉深成形历程的钣金件结构强度分析方法被提出,以更精确合理地计算钣金件结构强度。此方法把冲压成形与结构分析顺序耦合:先应用Abaqus/Explicit软件对板料进行多步拉深成形模拟,获得钣金件的形状(非均匀厚度)、残余应力以及加工硬化的材料性能,再把此非均匀厚度的钣金件导入Abaqus/Standard软件,同时映射残余应力作为初始条件,并使用硬化后的材料属性。以电子产品的椭圆筒件为例,应用上述方法对筒件合理、精确地进行了结构强度分析。
A novel method of structural strength analysis for sheet metal parts based on the history of multi-step stamping was proposed to calculate the structural strength of sheet metal parts accurately and reasonably.This method combines multi-step stamping forming and structure analysis together:the multi-step drawing of metal blank is simulated by using Abaqus/Explicit software.The shape(non-uniform thickness),residual stress of sheet parts and material properties of work hardening are obtained.Then the sheet metal parts of the non-uniform thickness are imported to Abaqus/Standard software,at the same time,mapping the residual stress is looked upon initial condition,and material properties after hardening are used.Taking elliptical cylinder part of electron component as an example,the structural strength of the tube was analyzed reasonably and accurately by using above method.
A novel method of structural strength analysis for sheet metal parts based on the history of multi-step stamping was proposed to calculate the structural strength of sheet metal parts accurately and reasonably.This method combines multi-step stamping forming and structure analysis together:the multi-step drawing of metal blank is simulated by using Abaqus/Explicit software.The shape(non-uniform thickness),residual stress of sheet parts and material properties of work hardening are obtained.Then the sheet metal parts of the non-uniform thickness are imported to Abaqus/Standard software,at the same time,mapping the residual stress is looked upon initial condition,and material properties after hardening are used.Taking elliptical cylinder part of electron component as an example,the structural strength of the tube was analyzed reasonably and accurately by using above method.
引文
[1]赵柏森,王怀建,李海峰.金属塑性成形工艺有限元数值模拟技术[J].热加工工艺,2010,39(7):86-90.
[2]柳建安,肖亮,刘佳杰.圆筒件拉深成形过程数值模拟研究[J].制造技术与机床,2010(5):129-131.
[3]安治国,李正芳,裴佑伦.轿车加油口盖多工步成形工艺数值模拟及优化[J].热加工工艺,2015,44(9):145-147.
[4]季筱玮,温彤,郜瑞.金属板材包辛格效应曲线测试方法研究综述[J].材料导报,2012,26(1):175-177.
[5]陈伟.板金属冲压成形快速模拟算法研究[D].长春:吉林大学.2013.
[6]翁其金,徐新成.冲压工艺及冲模设计口棚.北京:机械工业出版社.2012.
[7]江丙云,孔祥宏.罗元元.Abaqus工程实例详解[M].北京:人民邮电出版社.2014.
[8]余海燕.金属薄板应变硬化模型比较分析[J].锻压技术,2012,37(5):1-6.
[9]Dassault Systemes Simulia Corp.Abaqus Theory Guide[EB/OL].http://50.16.225.63/V6.14/books/stm/default.htm,2014.
[10]许恒建.多工位级进模成形仿真算法研究与系统集成[D].武汉:华中科技大学,2012.
[2]柳建安,肖亮,刘佳杰.圆筒件拉深成形过程数值模拟研究[J].制造技术与机床,2010(5):129-131.
[3]安治国,李正芳,裴佑伦.轿车加油口盖多工步成形工艺数值模拟及优化[J].热加工工艺,2015,44(9):145-147.
[4]季筱玮,温彤,郜瑞.金属板材包辛格效应曲线测试方法研究综述[J].材料导报,2012,26(1):175-177.
[5]陈伟.板金属冲压成形快速模拟算法研究[D].长春:吉林大学.2013.
[6]翁其金,徐新成.冲压工艺及冲模设计口棚.北京:机械工业出版社.2012.
[7]江丙云,孔祥宏.罗元元.Abaqus工程实例详解[M].北京:人民邮电出版社.2014.
[8]余海燕.金属薄板应变硬化模型比较分析[J].锻压技术,2012,37(5):1-6.
[9]Dassault Systemes Simulia Corp.Abaqus Theory Guide[EB/OL].http://50.16.225.63/V6.14/books/stm/default.htm,2014.
[10]许恒建.多工位级进模成形仿真算法研究与系统集成[D].武汉:华中科技大学,2012.