Transactions of Materials and Heat Treatment

Title：Influence of GTN meso\|damage model parameters on sheet forming

Authors： CHEN Zhi-ying DONG Xiang-huai

Unit： Shanghai Dianji University Shanghai Jiaotong University

KeyWords： damage model damage parameters aluminum alloy sheet finite element method

ClassificationCode：TG386.3

year,vol(issue):pagenumber：2012,37(3):23-27

Abstract：

Based on the Gurson-Tvergaard-Needleman (GTN) meso-damage model, by means of ABAQUS software, taking the drawing processes of a square box as an example, the effect of damage parameters variation on damage behavior was analyzed using orthogonal experimental design. The results show that the influence of damage parameter variation on sheet thickness reduction can be neglected, but can not be omitted for the porosity. And the mean plastic strain value at void nucleation εN has a distinct influence on the void volume fraction. Because the void volume fraction is related to the material forming history, it can be used as the criterion of predicting the sheet forming limit, especially suitable for the materials in which fracture occurs without any obvious necking phenomenon.

Funds：

上海市教育委员会科研创新资助项目(12YZ183)；国家自然科学基金资助项目(50575143)；上海市教育委员会重点学科建设资助项目(J51902)

Reference：

［1］Brunet M, Morestin F, Walter\|leberre H. Failure analysis of anisotropic sheet\|metals using a non\|local plastic damage model [J]. Journal of Materials Processing Technology, 2005, 170(12): 457-470.
［2］Chow C L, Jie M. Anisotropic damage\|coupled sheet metal forming limit analysis[J]. International Journal of Damage Mechanics, 2009, 18(4): 371-392.
［3］Teixeira P, Santos A D, Pires F M A, et al. Finite element prediction of ductile fracture in sheet metal forming processes[J]. Journal of Materials Processing Technology, 2006, 177(13): 278-281.
［4］Khelifa M, Oudjene M, Khennane A. Fracture in sheet metal forming: Effect of ductile damage evolution[J]. Computers and Structures, 2007, 85(34): 205-212.
［5］周储伟, 杨卫, 方岱宁. 金属基复合材料的强度与损伤分析[J]. 固体力学学报, 2000, 21(2): 161-165.
［6］Koplik J, Needleman A. Void growth and coalescence in porous plastic solids[J]. International Journal of Solids and Structures, 1988, 24(8): 835-853.
［7］Abendroth M, Kuna M. Identification of ductile damage and fracture parameters from the small punch test using neural networks [J]. Engineering Fracture Mechanics, 2006, 73(6): 710-725.
［8］Corigliano A, Mariani S, Orsatti B. Identification of Gurson\|Tvergaard material model parameters via Kalman filtering technique I. theory [J]. International Journal of Fracture, 2000, 104(4): 349-373.
［9］Negre P, Steglich D, Brocks W. Crack extension in aluminium welds: a numerical approach using the Gurson\|Tvergaard\|Needleman model[J]. Engineering Fracture Mechanics, 2004, 71(1617): 2365-2383.
［10］Gurson A L. Continuum theory of ductile rupture by void nucleation and growth: part I\|Yield criteria and flow rules for porous ductile media[J]. ASME Journal of Engineering. Materials and Technology,1977,99(1):2-15.
［11］Tvergaard V. Influence of voids on shear band instabilities under plane strain conditions [J]. International Journal of Fracture, 1981, 17(4): 389-407.
［12］Tvergaard V. On localization in ductile materials containing spherical voids[J]. International Journal of Fracture, 1982, 18(4): 237-252.

［13］Needleman A, Tvergaard V. An analysis of ductile rupture in notched bars[J]. Journal of the Mechanics and Physics of Solids, 1984，32: 461-490.
［14］Tbergaard V, Needleman A. Analysis of the cup\|cone fracture in a round tensile test bar [J]. Acta. Metall., 1984, 32: 157-169.
［15］陈志英. 冲压成形中破裂和回弹的细观损伤力学分析[D]. 上海: 上海交通大学, 2009.
［16］上海市科学技术交流站. 正交试验设计法：多因素的试验方法[M]. 上海: 上海人民出版社, 1975.
［17］王晓林. 蒙皮拉形过程有限元数值模拟技术研究[D]. 北京: 北京航空航天大学, 1999.
［18］Huang Y M. The formability limitation of the hole\|flanging process[J]. Journal of Materials Processing Technology, 2001, 117(12): 43-51.
［19］于忠奇. 基于Lemaitre 损伤理论的韧性断裂准则建立及板料成形极限预测[D]. 哈尔滨: 哈尔滨工业大学, 2003.

Service：

【This site has not yet opened Download Service】【Add Favorite】