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为研究高强钢板的热冲压成形性,采用ABAQUS软件对高温下22MnB5高强钢板沟槽形件冲压成形进行了数值模拟研究.建立了基于热力耦合的弹塑性有限元模型和热成形下的材料模型,通过对沟槽形件热成形进行数值模拟,考察了压边力、模具间隙和凹模圆角半径等工艺参数对熟成形时温度分布和回弹的影响,给出了热成形中产生回弹的机理,确定了合适的工艺参数,通过热成形试验验证了数值结果的可靠性.

参考文献

[1] Naderi M;Durrenberger L;Molinari A;Bleck W .Constitutive relationships for 22MnB5 boron steel deformed isothermally at high temperatures[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):130-139.
[2] Peng Chen;Muammer Koc .Simulation of springback variation in forming of advanced high strength steels[J].Journal of Materials Processing Technology,2007(1/3):189-198.
[3] 廖建国.日本钢铁生产新技术介绍[J].中国冶金,2004(12):36-38,35.
[4] R. Neugebauer;T. Altan;M. Geiger;M. Kleiner;A. Sterzing .Sheet Metal Forming at Elevated Temperatures[J].CIRP Annals,2006(2):793-816.
[5] M. Merklein;J. Lechler;M. Geiger .Characterisation of the Flow Properties of the Quenchenable Ultra High Strength Steel 22MnB5[J].CIRP Annals,2006(1):220-223.
[6] M. Merklein;J. Lechler .Investigation of the thermo-mechanical properties of hot stamping steels[J].Journal of Materials Processing Technology,2006(1/3):452-455.
[7] J. Yanagimoto;K. Oyamada .Springback of High-Strength Steel after Hot and Warm Sheet Formings[J].CIRP Annals,2005(1):213-216.
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