车用铝合金AA5182温热成形研究
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摘要
基于M-K模型分别结合Hill48、Barlat89和YLD2000屈服准则,预测了AA5182铝合金在温热条件下的成形极限。在不同温度下进行AA5182铝合金的温热成形极限实验,获得了材料在不同温度下的成形极限实验数据。比较分析实验结果与预测结果,表明Barlat89屈服准则比其他两个屈服准则更适用于预测AA5182铝合金在温热条件下的成形极限。同时,分析了温度和应变速率敏感指数的变化对成形极限预测结果的影响。结果表明,材料成形极限会随着温度的升高或者应变速率敏感指数的增大而增加。应变速率敏感指数的变化对预测得到材料成形极限的形状也会产生影响。
The forming limit of AA5182 aluminum alloy in warm condition was predicted based on M-K model combined with Hill48,Barlat89 and YLD2000 yield criteria,respectively,and the warm forming limit experiments of AA5182 aluminum alloy under different temperatures were conducted to obtain the forming limit data of material at different temperatures. Comparing the experimental result with the predicted result,it is considered that the Barlat89 yield criterion is more appropriate for predicting forming limit of AA5182 aluminum alloy in warm condition than other two yield criteria. Meanwhile,the influences of temperature and strain rate sensitivity index on the predicted result of forming limit were analyzed. The result shows that the forming limit of material increases with the increasing of temperature and strain rate sensitivity index. Moreover,the strain rate sensitivity index has influence on the shape of the predicted forming limit of material.
The forming limit of AA5182 aluminum alloy in warm condition was predicted based on M-K model combined with Hill48,Barlat89 and YLD2000 yield criteria,respectively,and the warm forming limit experiments of AA5182 aluminum alloy under different temperatures were conducted to obtain the forming limit data of material at different temperatures. Comparing the experimental result with the predicted result,it is considered that the Barlat89 yield criterion is more appropriate for predicting forming limit of AA5182 aluminum alloy in warm condition than other two yield criteria. Meanwhile,the influences of temperature and strain rate sensitivity index on the predicted result of forming limit were analyzed. The result shows that the forming limit of material increases with the increasing of temperature and strain rate sensitivity index. Moreover,the strain rate sensitivity index has influence on the shape of the predicted forming limit of material.
引文
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[15]Abedrabbo N,Pourboghrat F,Carsley J.Forming of AA5182-Oand AA5754-O at elevated temperatures using coupled thermo-mechanical finite element models[J].International Journal of Plasticity,2007,23(5):841-875.
[2]Tebbe P A,Kridli G T.Warm forming of aluminium alloys:An overview and future directions[J].International Journal of Materials&Product Technology,2004,21(1-3):24-40.
[3]Ahmetoglu M A,Kinzel G,Altan T.Forming of aluminum alloysapplication of computer simulations and blank holding force control[J].Journal of Materials Processing Technology,1997,71(1):147-151.
[4]Jinta M,Sakai Y,Oyagi M,et al.Press forming analysis of aluminum auto body panel:Wrinkle behavior in 5000 and 6000 series aluminum alloy sheet forming[J].Jsae Review,2000,21(3):407-409.
[5]Boogaard A H V D,Huétink J.Simulation of aluminum sheet forming at elevated temperatures[J].Computer Methods in Applied Mechanics&Engineering,2006,195(48-49):6691-6709.
[6]Peng C,Lin Z Q,Chen G L,et al.Parametric analysis of warm forming of aluminum blanks with FEA and DOE[J].Transactions of Nonferrous Metals Society of China,2006,16(2):267-273.
[7]Picu R C,Vincze G,Ozturk F,et al.Strain rate sensitivity of the commercial aluminum alloy AA5182-O[J].Materials Science&Engineering A,1996,390(1):334-343.
[8]Naka T,Torikai G,Hino R,et al.The effects of temperature and forming speed on the forming limit diagram for type 5083 aluminum-magnesium alloy sheet[J].Journal of Materials Processing Tech.,2001,113(1):648-653.
[9]Naka T,Torikai G,Hino R,et al.The effects of temperature and forming speed on the forming limit diagram for type 5083 aluminum-magnesium alloy sheet[J].Journal of Materials Processing Tech.,2001,113(1):648-653.
[10]Fang G,Liu Q J,Lei L P,et al.Comparative analysis between stress and strain-based forming limit diagrams for aluminum alloy sheet 1060[J].Transactions of Nonferrous Metals Society of China,2012,22(S2):343-349.
[11]Yuan W,Wan M,Wu X.Prediction of forming limit curves for2021 aluminum alloy[J].Procedia Engineering,2017,207(5):544-549.
[12]Chen J,Zhou X,Chen J.Sheet metal forming limit prediction based on plastic deformation energy[J].Journal of Materials Processing Tech.,2010,210(2):315-322.
[13]Lin J,Mohamed M,Balint D,et al.The development of continuum damage mechanics-based theories for predicting forming limit diagrams for hot stamping applications[J].International Journal of Damage Mechanics,2014,23(23):684-701.
[14]Boogaard A H V D,Huétink J.Modelling of aluminum sheet forming at elevated temperatures[J].Langmuir,2004,712(1):893-898.
[15]Abedrabbo N,Pourboghrat F,Carsley J.Forming of AA5182-Oand AA5754-O at elevated temperatures using coupled thermo-mechanical finite element models[J].International Journal of Plasticity,2007,23(5):841-875.