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材料工程  2007 

2169钢细观损伤参数识别

, PP. 50-52

Keywords: 2169钢,延性断裂,数值模拟,参数识别

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Abstract:

采用Gurson模型对材料在拉伸状态下的颈缩、损伤与破坏过程进行分析。应用有限元数值模拟、最优化算法和实验研究相结合,对材料参数进行优化识别。将获得的Gurson损伤参数应用于2169延性金属材料在拉伸状态下的破坏分析。

References

[1]  MARQUARDT D W.An algorithm for least-squares estimation of nonlinear parameters[J].Journal of the Society for Industrial and Applied Mathematics,1963,11(2):431-441.
[2]  GURSON A L.Continum theory of ductile rupture by void nucleation and growth:Part Ⅰ-yield criteria and flow rules for porous ductile materials[J].J Engng Mater Tech,1977,99(1):2-15.
[3]  NEEDLEMAN A,TVERGAARD V.Material strain-rate sensitivity in the round tensile bar[R].RI:Brown University,1985.
[4]  TVERGAARD V.Influence of voids on shear band instabilities under plane strain conditions[J].International Journal of Fracture,1981,17(4):389-406.
[5]  TVERGAARD V,NEEDLEMAN A.Analysis of the cup-cone fracture in a round tensile bar[J].Acta Metall,1984,32(1):157-169.

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