| 引用本文: | 刘建光,刘伟,薛卫.铝合金-聚合物复合层板弯曲回弹理论分析[J].材料科学与工艺,2012,20(1):114-118,123.DOI:10.11951/j.issn.1005-0299.20120123. |
| LIU Jian-guang,LIU Wei,XUE Wei.Theoretical analysis on springback of aluminum alloy-polymer sandwich sheets in bending process[J].Materials Science and Technology,2012,20(1):114-118,123.DOI:10.11951/j.issn.1005-0299.20120123. |
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| 铝合金-聚合物复合层板弯曲回弹理论分析 |
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刘建光1,2, 刘伟1,2,3, 薛卫4,5
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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,E-mail:liujg@hit.edu.cn;2.哈尔滨工业大学材料科学与工程学院，哈尔滨150001;3.;4.哈尔滨工业大学材料科学与工程学院，哈尔滨 150001;5.四川成发航空科技股份有限公司技术中心，成都610503
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| 摘要: |
| 针对铝合金-聚合物复合层板弯曲回弹问题，分析了复合层板弯曲过程表面层铝板及中心层聚合物的变形特征，建立了复合层板平面应变纯弯曲回弹理论分析模型.采用建立的模型预测了复合层板纯弯曲过程回弹角变化，并与实验结果进行了对比，分析了聚合物层厚度及铝合金板材力学性能对回弹的影响规律.结果表明：随着中心聚合物层厚度的增加，复合层板回弹角降低；随着表面层铝板强度的降低，复合层板回弹角减小.理论预测结果与实验结果一致，说明了本文推导的理论模型的可靠性 |
| 关键词: 复合层板 纯弯曲 回弹 理论分析 铝合金 |
| DOI：10.11951/j.issn.1005-0299.20120123 |
| 分类号:TG386 |
| 基金项目:哈尔滨工业大学科研创新基金资助项目(HIT.NSRIF.2009033) |
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| Theoretical analysis on springback of aluminum alloy-polymer sandwich sheets in bending process |
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LIU Jian-guang,LIU Wei,XUE Wei
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1.National Key Laboratory for Precision Hot Processing of Metals,Harbin Institute of Technology,Harbin 150001,China，E-mail:liujg@hit.edu.cn;2.School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China;3.Sichuan ChengFa Aero Science & Technology Co.Ltd Tech-R&D Center,Chengdu 610503,China
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| Abstract: |
| This paper focus on studying the springback of aluminum alloy-polymer sandwich sheets in bending process.An analytical model for predicting the springback of sandwich sheets was proposed on the basis of analyzing the deformation behavior of skin sheet and core materials in bending process.Then the proposed model was used to predict the springback angle of aluminum alloy-polyethylene sandwich sheets after pure bending process.The predicted results were compared with experimental ones and the influences of the thickness of polymer and mechanical properties of aluminum alloy sheet on the springback angle were investigated.The springback angle of aluminum alloy-polymer sandwich sheet decreases with the increasing of polymer thickness and decreasing of the strength of the aluminum alloy sheet.Good agreements between predicted results and experimental ones prove the validity of the proposed model. |
| Key words: sandwich sheets bending springback theoretical analysis aluminum alloy |
