2019
DOI: 10.3390/met9080905
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A new Dynamic Plasticity and Failure Model for Metals

Abstract: A new plasticity and failure model is developed herein for metallic materials subjected to dynamic loadings on the basis of the analysis of some available material test data and previous work. The new model consists of two parts: a strength model and a failure criterion. The strength model takes into consideration both tension and shear stress-strain relationships, as well as the effect of Lode angle, while the failure criterion takes into account both the effects of stress triaxiality and Lode angle. Furtherm… Show more

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Cited by 18 publications
(8 citation statements)
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“…The local strain distribution was calculated by the tracking of the 3D reconstructed grids during tensile testing process. In the past decade, several fracture criteria have been proposed [93][94][95][96][97][98], and various approaches to the prediction of forming cracks were made. Among them, Takuda et al [99] have shown that Cockcroft-Latham damage criterion, which integrates the plastic strain and the maximum principal stress, can accurately predict the crack occurrence during sheet metal, and the crack behavior due to tube forming was presented by Ma [100].…”
Section: Finite Element Methodsmentioning
confidence: 99%
“…The local strain distribution was calculated by the tracking of the 3D reconstructed grids during tensile testing process. In the past decade, several fracture criteria have been proposed [93][94][95][96][97][98], and various approaches to the prediction of forming cracks were made. Among them, Takuda et al [99] have shown that Cockcroft-Latham damage criterion, which integrates the plastic strain and the maximum principal stress, can accurately predict the crack occurrence during sheet metal, and the crack behavior due to tube forming was presented by Ma [100].…”
Section: Finite Element Methodsmentioning
confidence: 99%
“…This projectile can be used as the standard bullet for ballistic performance of a bulletproof helmet, which is required to resist the penetration of 8g FMJ projectile at 358 m/s in Std-0106.01 type II standard (Tham et al 2008). The mechanical behavior of lead and brass in the FMJ bullet can be described by the dynamic constitutive model for metals developed by Zhou and Wen (2019b) which consists of strength model and failure criterion.…”
Section: Fmj Projectilementioning
confidence: 99%
“…are constants determined from the quasi-static true stress-true strain curve in tension; p  is the ratio of the equivalent stress in shear to that in tension.constants determined from material tests at elevated temperatures; DIF is the dynamic increase factor at zero plastic strain which can be cast into the following form, viz (Zhou and Wen 2019b). …”
mentioning
confidence: 99%
“…Известно, что поведение металла при высокоскоростной деформации определяется как условиями нагружения, так и параметрами микроструктуры материала [1][2][3], однако методические сложности существенно ограничивают возможность исследования влияния параметров микроструктуры материала на его поведение при динамической деформации. Известен ряд методик исследования явлений, протекающих при динамическом деформировании металлических материалов со скоростями выше 10 3 s −1 [1,4].…”
Section: Introductionunclassified