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A DUCTILE FRACTURE CRITERION BASED ON THREE-DIMENSIONAL VOID MODEL X.H.Dong1,J.K.Huang1 (1.National Die & Mould CAD Engineering Research Center, Shanghai Jiaotong University, Shanghai 200030,China... with the result obtained from the experiment, rather than that calculated by the modified Thomason model, which confirms the validity of the ductile fracture criterion based on the three-dimensional void model......
in non-isothermal viscous pressure bulging of aluminum alloy sheet using ductile fracture criterion WANG Zhong-jin(王忠金), LIU Jian-guang(刘建光), LI Yi(李毅) School of Materials Science and Engineering... viscous pressure bulging (VPB). Utilizing the coupled thermo-mechanical finite element method combined with ductile fracture criterion, the calculations were carried out for non-isotherm VPB......
Trans. Nonferrous Met. Soc. China 23(2013) 749-755 Evaluation of varying ductile fracture criterion for 7075 aluminum alloy Guo-zheng QUAN, Feng-biao WANG, Ying-ying LIU, Yu SHI, Jie ZHOU School... metal forming process. Cockcroft-Latham type fracture criterion is suited for ductile fracture in bulk metal-forming simulation. Finding a way to evaluate the ductile fracture criterion (DFC......
based on Zener-Hollomon parameter was established. Key words: Ti40 alloy; ductile fracture; Zener-Hollomon parameter; Oyane criterion; critical fracture value  ...] NARAYANA-MURTY S V S, NAGESWARA-RAO B, KASHYAP B P. Improved ductile fracture criterion for cold forming of spheroidized steel [J]. Journal of Materials Processing Technology, 2004, 147(1): 94-101. [8......
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new ductile fracture criterion to principal stress space 图5 依据四种新型断裂准则绘制的FFLD Fig. 5 FFLD obtained by new ductile fracture criteria 韧性断裂准则的另一种应用途径是将准则在"断裂应变-应力三轴度"空间中表达,即断裂轨迹.该轨迹可以用于有限元仿真.商...金属材料的断裂状态. 图6 新型韧性断裂准则向"断裂应变-应力三轴度"空间转化流程图 Fig. 6 Flow chart for transforming from new ductile fracture criterion to "fracture strain-triaxiality" space 图7 依据四种新型断裂准则绘制的断裂轨迹 Fig. 7......
, Changsha, 410083, China)Abstract:In this paper, a distortion dynamic strain energy density factor criterion for dynamic mixed-mode fracture initiation in rock is suggested.The results of the investigation... criterions suggested by authors in predicting dynamic mixed-mode initiation fracture loading and fracture angle in rock.Key words:rock; dynamic state; mixed-mode; fracture criterion......
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Trans. Nonferrous Met. Soc. China 25(2015) 3389-3398 Modified MK model combined with ductile fracture criterion and its application in warm hydroforming Xi-ying YANG, Li-hui LANG, Kang-ning LIU... with ductile fracture criterion (DFC-MK model) is proposed to compute the forming limit diagrams (FLDs) of 5A06-O aluminum alloy sheet at different temperatures. The material constant (C) of ductile fracture......