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《Materials for Mechanical Engineering》 2013-10
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Theoretical Calculation for Forming Limit Stress Diagram of Composite Nickel Coating Sheet

ZHOU Li-qun;LONG Wen-bao;LI Yu-ping;MAO Zhao-ming;School of Mechanical Engineering,Xiangtan University;Key Laboratory of Low Dimensional Materials and Application Technology,Ministry of Education of Xiangtan University;  
Based on experimental stress and strain datas,the stress-strain constitutive relation of composite nickel coating sheet was calculated by using Hollomon equation and the polynomial fitting,and then by using quintic polynomial fitting constitutive relation,Hill48yield criterion and Swift diffuse instability criterion,a thoretical calculation model for the composite nickel coating sheet′s forming limit stress diagram(FLSD)was derived.Sheet metal stamping experiment was done to verify the validity of the model of composite nickel coating sheet.The results show that the model could predict the FLSD of the composite nickel coating sheet accurately.After applying the model in production process of composite nickel coating sheet forming,some forming defects would prevented effectively,and the model could help finding the causes of these defects.
【Fund】: 国家自然科学基金资助项目(10702057)
【CateGory Index】: TG174.4
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1 Zhou Liqun1,2 Li Yuping2 Long Wenbao2 1.Hunan Institute of Engineering,Xiangtan,Hunan,411105 2.Xiangtan University,Xiangtan,Hunan,411105;Analysis and Prediction for Forming Limits of Electrodeposited Nickel Coating in the Right Region[J];China Mechanical Engineering;2012-02
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