| 引用本文: | 刘伟,刘钢,崔晓磊,武永.异种板材成对液压成形的材料变形行为研究[J].材料科学与工艺,2012,20(6):92-96.DOI:10.11951/j.issn.1005-0299.20120617. |
| LIU Wei,LIU Gang,CUI Xiao-lei,WU Yong.Hydroforming behavior of double sheets of different materials[J].Materials Science and Technology,2012,20(6):92-96.DOI:10.11951/j.issn.1005-0299.20120617. |
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| 异种板材成对液压成形的材料变形行为研究 |
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刘伟1,2, 刘钢1,2, 崔晓磊2, 武永2
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(1.哈尔滨工业大学 金属精密热加工国家级重点实验室,哈尔滨 150001;;2.哈尔滨工业大学 材料科学与工程学院,哈尔滨 150001);1.哈尔滨工业大学 金属精密热加工国家级重点实验室,哈尔滨 150001;2.哈尔滨工业大学 材料科学与工程学院,哈尔滨 150001
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| 摘要: |
| 通过应力分析了异种板材配对液压成形过程板材的变形行为和相互作用,采用DC04、DP450两种板材组成3种配对方案,通过数值模拟和实验获得了3组配对方案中板材的法兰流入量、试件高度和壁厚分布.研究发现,强度低的板材先发生变形,并带动强度高的板材变形,而后者阻碍前者变形,两个板材总体上趋于协同变形,数值模拟和实验结果证明了力学分析结论的正确性. |
| 关键词: 液压成形 异种板材 变形行为 数值模拟 高强钢 摩擦力 |
| DOI：10.11951/j.issn.1005-0299.20120617 |
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| 基金项目:国家自然科学基金青年科学基金项目(No.50905041);载运工具与装备教育部重点实验室开放基金资助项目(09JD18)；教育部博士点基金资助项目(20092302120079). |
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| Hydroforming behavior of double sheets of different materials |
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LIU Wei1,2, LIU Gang1,2, CUI Xiao-lei2, WU Yong2
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(1.National Key Laboratory for Precision Hot Processing of Metals,Harbin Institute of Technology,Harbin 150001,China;;2.School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China);1.National Key Laboratory for Precision Hot Processing of Metals,Harbin Institute of Technology,Harbin 150001,China;2.School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China
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| Abstract: |
| The deformation behaviors between blanks are much different when two kinds of material sheets are hydroformed.The behaviors and interactioin effect of two blanks were analyzed by stress method.Three pairs of blanks of material DC04 and DP450 were used for the hydroforming of double hemispheres by numerical simulations and experiments.The blank flow-in,the height of forming parts and the thickness distribution were investigated and the results proved that the stress analysis was correct.The study shows that the blank with lower strength will be formed before the blank with higher strength,and the former will drive the latter to be deformed.However,the latter will restrain the deformation of the former.As a result,there is a certain synergy deformation between the two blanks. |
| Key words: sheet hydroforming different sheets deformation behavior numerical simulation high strength steel friction |
