铝合金三维弯曲管件差速挤压过程有限元模拟  

Finite element analysis of bending aluminum-alloy tube in differential velocity

作　　者：杜德恒[1] 宋继顺[1] 马叙[1] 尹康[1] 崔宏祥[1] 

机构地区：[1]天津理工大学材料科学与工程学院,天津300384

出　　处：《天津理工大学学报》2010年第1期12-16,共5页Journal of Tianjin University of Technology

基　　金：国家自然科学基金(50975205)

摘　　要：本文采用材料流动控制方法,实现了弯曲管件一次性挤压成形;采用有限元法,在DEFORM-3D有限元商业软件上实现了弯曲管件双凸模差速挤出过程的三维数值模拟,分析了双凸模挤压过程速度场分布、材料流动规律、挤压力、应力场和应变场的分布以及在4个凸模作用下实现了管材的空间弯曲;介绍了一次性挤压直接成形弯曲管件的机理,对实际模具设计将具有重要的指导意义.Material flow control method is used in this paper, through this method achieved bending aluminum-alloy tube extrusion forming process. Used Finite element method, achieved three-dimensional numerical simulation of multi - ram extrusion （MRE） of bending aluminum-alloy tube in differential velocity by DEFORM-3D finite element commercial software, analyzed velocity field distribution, material flow, squeezing pressure, stress and strain field distribution of the process as well as through four punch to achieve pipe bending in the space. Introduce the mechanism of one step direct extrusion forming tube bending process, it will he of great guiding significance the actual die design.

关 键 词：有限元模拟 挤出弯曲 一次性成形 流动控制 差速挤压 

分 类 号：TG376[金属学及工艺—金属压力加工]