铝合金大型复杂薄壁壳体旋压研究进展  

Advances in spinning of aluminum alloy large-sized complicated thin-walled shells

作　　者：杨合[1,2] 詹梅[1,2] 李甜[1,2] 王巧玲[1,2] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,西安710072 [2]西北工业大学材料科学与工程学院,西安710072

出　　处：《中国有色金属学报》2011年第10期2534-2550,共17页The Chinese Journal of Nonferrous Metals

基　　金：国家高技术研究发展计划资助项目(2008AA04Z122);国家自然科学基金资助项目(50405039);高等学校学科创新引智计划资助项目(B08040)

摘　　要：大型复杂薄壁壳体是航空航天等高技术产业迅速发展的迫切需求,带横向内筋大型复杂薄壁壳体是其中的典型代表。然而,带横向内筋大型复杂薄壁壳体多道次复合旋压却是一个多因素耦合作用下的复杂塑性成形过程。作者采用数值模拟和实验相结合的方法,以铝合金带横向内筋大型复杂薄壁壳体为代表,建立大型复杂薄壁壳体复合旋压全过程仿真平台与模型,研究不同条件下大型复杂薄壁壳体复合旋压及其特征结构旋压过程中的不均匀塑性变形行为和成形缺陷的形成机理。揭示不同塑性变形行为对工件内筋质量的影响规律,获得对不同塑性变形行为有决定性影响的因素,确定合理的毛坯、工艺和旋轮参数的选择准则。研究结果对发展大型复杂薄壁壳体精确成形技术具有重要的理论意义和实际应用价值。Large-sized complicated thin-walled aluminum alloy shells are the urgent needs of the development of aero-space high technology.Large-sized complicated thin-walled aluminum alloy shells with transverse inner ribs（LCTAASTIR） are one representative of those.But Multi-pass compound spinning of LCTAASTIR is one of the complicated plastic forming processes under the action of multi-parameters and their coupled effects.In this work,a modeling platform for the process was developed and some finite element models for the whole process were established.The characteristics of uneven deformation behaviors during the process and the forming mechanism of defects were investigated.The laws of different deformation behaviors on the quality of ribs were revealed,the decisive parameters on deformation behaviors were obtained,and the reasonable rules of blank,process and die parameters for the spinning process were determined.The achievements of this work are of significance to developing advanced theory and technology of precision plastic forming for LCTAASTIR.

关 键 词：铝合金 大型复杂薄壁壳体 横向内筋 多道次复合旋压 全过程仿真优化 

分 类 号：TG302[金属学及工艺—金属压力加工]