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    Fracture Mode Transition for Explosively Loaded GB/JB 20 Steel Containment Vessels

    Source: Journal of Pressure Vessel Technology:;2014:;volume( 136 ):;issue: 003::page 31203
    Author:
    Li, Ma
    ,
    Yang, Hu
    ,
    Yang, Du
    ,
    Jinyang, Zheng
    DOI: 10.1115/1.4026578
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A rupture experiment was conducted on cylindrical explosion containment vessels (ECVs), where the fracture mode transition was observed. Microstructure examinations indicate the material GB/JB20 (AISI 1020) experienced a fibroustocleavage fracture mechanism transition with increment of loading rate. Different from fracture mechanics method, a ratedependent failure criterion is proposed to account for the dynamic fracture behavior, which is compatible with experimental observation that the material fails at low effective plastic strain when at high strain rates. A finite element analysis of a cylindrical containment vessel with different sizes of initial cracks was performed, where the overpressure caused by detonation was calculated, and the dynamic crack propagation and fracture mode transition were reproduced. In addition, a failure assessment including the estimation of limiting crack sizes corresponding to impulsive loading was conducted. It was found that a small variation of initial crack size has minor influence on the final fracture mode and profile, which is mainly dependent upon the intensity of impulsive load as well as the loading rate. The results also indicate that the crack propagates with strongly nonlinear speeding, most cracking length developed during the first structural vibration cycle.
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      Fracture Mode Transition for Explosively Loaded GB/JB 20 Steel Containment Vessels

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    http://yetl.yabesh.ir/yetl1/handle/yetl/156133
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    contributor authorLi, Ma
    contributor authorYang, Hu
    contributor authorYang, Du
    contributor authorJinyang, Zheng
    date accessioned2017-05-09T01:11:57Z
    date available2017-05-09T01:11:57Z
    date issued2014
    identifier issn0094-9930
    identifier otherpvt_136_03_031203.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/156133
    description abstractA rupture experiment was conducted on cylindrical explosion containment vessels (ECVs), where the fracture mode transition was observed. Microstructure examinations indicate the material GB/JB20 (AISI 1020) experienced a fibroustocleavage fracture mechanism transition with increment of loading rate. Different from fracture mechanics method, a ratedependent failure criterion is proposed to account for the dynamic fracture behavior, which is compatible with experimental observation that the material fails at low effective plastic strain when at high strain rates. A finite element analysis of a cylindrical containment vessel with different sizes of initial cracks was performed, where the overpressure caused by detonation was calculated, and the dynamic crack propagation and fracture mode transition were reproduced. In addition, a failure assessment including the estimation of limiting crack sizes corresponding to impulsive loading was conducted. It was found that a small variation of initial crack size has minor influence on the final fracture mode and profile, which is mainly dependent upon the intensity of impulsive load as well as the loading rate. The results also indicate that the crack propagates with strongly nonlinear speeding, most cracking length developed during the first structural vibration cycle.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleFracture Mode Transition for Explosively Loaded GB/JB 20 Steel Containment Vessels
    typeJournal Paper
    journal volume136
    journal issue3
    journal titleJournal of Pressure Vessel Technology
    identifier doi10.1115/1.4026578
    journal fristpage31203
    journal lastpage31203
    identifier eissn1528-8978
    treeJournal of Pressure Vessel Technology:;2014:;volume( 136 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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