[1] SELLARS C M,MCTEGART W J.On the mechanism of hot deformation[J].Acta Metallurgica,1966,14(9):1136-1138.
[2] HOULSBY G T,PUZRIN A M.Principles of hyperplasticity[M].London:Springer-Verlag,2006:19-28.
[3] KOC M,BILLUR E,CORA O N.An experimental study on the comparative assessment of hydraulic bulge test analysis methods[J].Materials and Design,2011,32(1):272-281.
[4] LANG L H,CAI G S,LIU K N,et al.Investigation on the effect of through thickness normal stress on forming limit at elevated temperature by using modified M-K model[J].International Journal of Material Forming,2015,8(2):211-228.
[5] NURCHESHMEH M,GREEN D E.Influence of out-of-plane compression stress on limit strains in sheet metals[J].International Journal of Material Forming,2012,5(3):213-226.
[6] LANG L H,LIU B S,LI T,et al.Experimental investigation on hydromechanical deep drawing of aluminum alloy with heated media[J].Steel Research International,2012,83(3):230-237.
[7] 马高山.5A90铝锂合金板材热成形有限元模拟与试验研究[D].北京:北京航空航天大学,2008:37-46.MA G S.FEM simulation and experimental research on hot forming of 5A90 Al-Li alloy sheet[D].Beijing:Beihang University,2008:37-46(in Chinese).
[8] LIU B S,LANG L H,ZENG Y S,et al.Forming characteristic of sheet hydroforming under the influence of through-thickness normal stress[J].Journal of Materials Processing Technology,2012,212(9):1875-1884.
[9] HOFFMANNER A L.Development of workability testing techniques:F33615-67-C-1466[R].Cleveland:Interim Report on Air Force Contract,1967.
[10] GROCHE P,HUBER R,DOERR J,et al.Hydromechanical deep-drawing of aluminium-alloys at elevated temperatures[J].CIRP Annals,2002,51(1):215-218.
[11] KAYA S,ALTAN T,GROCHE P,et al.Determination of the flow stress of magnesium Az31-O sheet at elevated temperatures using the hydraulic bulge test[J].International Journal of Machine Tools and Manufacture,2008,48(5):550-557.
[12] MAHABUNPHACHAI S,KOC M.Investigations on forming of aluminum 5052 and 6061 sheet alloys at warm temperatures[J].Materials and Design,2010,31(5):2422-2434.
[13] LANG L H,WANG Z R,KANG D C,et al.Hydroforming highlights:Sheet hydroforming and tube hydroforming[J].Journal of Materials Processing Technology,2004,151(1-3):165-177.
[14] SIEGERT K,JAGER S,VULCAN M.Pneumatic bulging of magnesium AZ 31 sheet metals at elevated temperatures[J].CIRP Annals,2003,52(1):241-244.
[15] STRANO M,ALTAN T.An inverse energy approach to determine the flow stress of tubular materials for hydroforming applications[J].Journal of Materials Processing Technology,2004,146(1):92-96.
[16] 刘宝胜.板材充液热成形机理及关键技术研究[D].北京:北京航空航天大学,2012:95-105.LIU B S.Research on forming mechanism and key technologies of warm sheet hydroforming[D].Beijing:Beihang University,2012:95-105(in Chinese).
[17] GOTOH M,CHUNG T,IWATA N.Effect of out-of-plane stress on the forming limit strain of sheet metals[J].JSME International Journal Series A:Mechanics and Material Engineering,1995,38(1):123-132.
[18] GUTSCHER G,WU H C,NGAILE G.Determination of flow stress for sheet metal forming using the viscous pressure bulge (VPB) test[J].Journal of Materials Processing Technology,2004,146(1):1-7.
[19] PRATT V.Direct least-squares fitting of algebraic surfaces[J].Computer Graphics,1987,21(4):145-152.
[20] PEIRS J,VERLEYSEN P,VAN PAEPEGEM W,et al.Determining the stress-strain behaviour at large strains from high strain rate tensile and shear experiments[J].International Journal of Impact Engineering,2011,38(5):406-415.
[21] LANG L H,DU P M,LIU B S,et al.Pressure rate controlled unified constitutive equations based on microstructure evolution for warm hydroforming[J].Journal of Alloys and Compounds,2013,574:41-48. |