Transactions of Materials and Heat Treatment

Title：Anisotropic strengthening calculating model of cold rolled steel sheet

Authors： Tian Xiyang Dong Xianghuai Peng Fang Liu Kai

Unit： Shanghai Jiao Tong University

KeyWords： cold rolled steel sheet anisotropic strengthening calculating model subsequent yield loci prestrain rolling

ClassificationCode：TG381

year,vol(issue):pagenumber：2016,41(8):132-137

Abstract：

Based on the processing method of self-hardening and interaction-hardening in crystal plasticity theory, a model of calculating strengthening along anisotropic principal axis of thin sheet metal was proposed. For the cold rolled steel sheet, the uniaxial tensile and compression tests were carried out by cutting simples along different directions of pre-deformation sheet, and the yield stress deviation increment was measured along the rolling direction and transversal direction respectively. Based on the expression of strengthening calculating model, model parameters were defined and the variation trend of the subsequent yield loci of interpolation-type orthotropic yield function was predicted. The results show that yield stress deviation increment along anisotropic principal axis can be well described by this model for different pre-deformation directions. The model can show the strengthening relationship between anisotropic axis direction and other directions directly.

Funds：

国家自然科学基金资助项目（51275297）

田曦阳（1990-），男，硕士研究生董湘怀（1955-），男，博士，教授

Reference：

［1］武冠华，董顺昆，徐杰，等. 浅析中国汽车用钢的发展及唐钢汽车用钢的开发[A]. 2014年全国轧钢生产技术会议文集（上）(RSPT2014)[C]. 无锡，2014.Wu G H, Dong S K, Xu J, et al. Brief analysis on Chinese automotive steel development and research of automotive steel in tang steel[A]. National Conference on Rolling Steel Production Technology in 2014(RSPT2014)[C]. Wuxi, 2014.
［2］闫盖，郑燕萍，王列亮. 汽车覆盖件冲压材料利用率提升的研究与应用[J]. 锻压技术，2014，39(2): 84-87.Yan G, Zheng Y P, Wang L L. Research and application of material utilization ratio improvement for automobile panel [J]. Forging & Stamping Technology, 2014, 39(2): 84-87.
［3］肖煜中，陈军. 金属板料冲压数值模拟中的宏观硬化模型研究现状[J]. 塑性工程学报，2009，16(4): 51-58.Xiao Y Z, Chen J. A review of research in macroscopic hardening models in numerical simulation of sheet metal forming [J]. Journal of Plasticity Engineering, 2009, 16(4): 51-58.
［4］Yoshida F, Uemori T. A model of large-strain cyclic plasticity describing the Bauschinger effect and workhardening stagnation[J]. International Journal of Plasticity, 2002, 18(5): 661-686.
［5］Ziegler H. A modification of Prager's hardening rule[J]. Quart. Appl. Math., 1959, 17: 55-56.
［6］Mroz Z. An attempt to describe the behavior of metals under cyclic loads using a more general workhardening model[J]. Acta Mechanica, 1969, 7(2): 199-212.
［7］Frederick C O, Armstrong P J. A mathematical representation of the multiaxial Bauschinger effect [J]. Materials at High Temperatures, 2007, 24(1): 1-26.
［8］Chaboche J L. A review of some plasticity and viscoplasticity constitutive theories [J]. International Journal of Plasticity, 2008, 24(10): 1642-1693.
［9］Geng L, Wagoner R H. Springback Analysis with A Modified Hardening Model[R]. Detroit, Michigan: SAE 2000 World Congress, 2000.
［10］Vegter H, Van den Boogaard A H. A plane stress yield function for anisotropic sheet material by interpolation of biaxial stress states [J]. International Journal of Plasticity, 2006, 22(3): 557-580.
［11］Peng F, Dong X H, Tian X Y, et al. An interpolation-type orthotropic yield function and its application under biaxial tension [J]. International Journal of Mechanical Sciences, 2015, 99: 89-97.
［12］王自强，段祝平. 塑性细观力学(PM)[M]. 北京：科学出版社，1995.Wang Z Q, Duan Z P. Plastic Micromechanics(PM)[M]. Beijing: Science Press, 1995.
［13］李将川，陈军，陈劼实，等. 考虑预应变与烘烤时效的流动应力模型[J]. 上海交通大学学报，2013，47(11): 1680-1684.Li J C, Chen J, Chen J S, et al. Flow stress curve modeling of bake-hardening A6111 aluminium alloy[J]. Journal of Shanghai Jiao Tong University, 2013, 47(11): 1680-1684.

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