强脉冲载荷作用下端盖法兰结构的螺栓预紧力设计方法
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摘要
为研究承受强脉冲载荷的端盖法兰结构的螺栓预紧力设计方法,利用实验室霍普金森杆平台,基于液压原理设计了一套实验装置,并结合数值模拟结果,对强脉冲载荷下端盖法兰结构的动态响应进行研究。通过研究发现:由预紧力和脉冲载荷引起的螺栓总拉伸应变随载荷峰值变化的曲线上存在最小极值点,并总结了最小极值点随载荷峰值、载荷脉宽的变化规律,为强脉冲载荷下法兰结构和预紧力设计提供了依据。
In this article,to figure out an optimal pretightening load selection for a closure flange structure under intense impulsive loading,we designed an experimental system based on the SHPB platform and the hydraulic principle and investigated the dynamic response process of a closure flange structure.The results showed that a minimum extreme point was observed on the curve of the total tensile strain of the bolt under the pretightening and impulsive loading versus the impulse peak.Further more,we obtained the variation pattern of the total tensile strain of the bolt with the change of the impulse peak and decay,which can be used as basis for the structural design and the selection of the bolt preload for a sealing flange under intense impulsive loading.
In this article,to figure out an optimal pretightening load selection for a closure flange structure under intense impulsive loading,we designed an experimental system based on the SHPB platform and the hydraulic principle and investigated the dynamic response process of a closure flange structure.The results showed that a minimum extreme point was observed on the curve of the total tensile strain of the bolt under the pretightening and impulsive loading versus the impulse peak.Further more,we obtained the variation pattern of the total tensile strain of the bolt with the change of the impulse peak and decay,which can be used as basis for the structural design and the selection of the bolt preload for a sealing flange under intense impulsive loading.
引文
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[2]丁伯民.ASME压力容器规范分析与应用[M].北京:化学工业出版社,2009:123-129.
[3]DUFFEY T A.Optimal bolt preload for dynamic loading[J].International Journal of Mechanical Sciences,1993,35(3):257-265.DOI:10.1016/0020-7403(93)90080-e.
[4]DUFFEY T A,LEWIS B,BOWERS S.Bolt preload selection for pulse-loaded vessel closures[C]∥ASME Pressure Vessels and Piping Conference.Honolulu,1995:167-174.
[5]SEMKE W H,BIBEL G D,JERATY S,et al.A dynamic investigation of piping systems with a bolted flange[C]∥ASME Pressure Vessel and Piping Conference.Vancouver,2002.
[6]SEMKE W H,BIDEL G D,JERATH S,et al.Efficient dynamic structural response modelling of bolted flange piping systems[J].International Journal of Pressure Vessels and Piping,2006,83(10):767-776.
[7]DEEPAK S S,MOHAMED B T,BRENDAN J O.A methodology for predicting high impact shock propagation within bolted-joint structures[J].International Journal of Impact Engineering,2014,73(2):30-42.
[8]霍宏发,黄协清,张安峰.组合式爆炸容器联接螺栓的动力学分析[J].机械科学与技术,2002(增刊1):81-82.HUO Hongfa,HUANG Xieqing,ZHANG Anfeng.Dynamic analysis of the bolts of explosion vessels[J].Mechanical Science and Technology,2002(suppl 1):81-82.
[9]霍宏发,黄协清,林俊德.组合式密闭爆炸容器螺栓预应力范围的计算方法[J].机械强度,2001,23(2):194-197.DOI:10.16579/j.issn.1001.9669.2001.02.020.HUO Hongfa,HUANG Xieqing,LIN Junde.Method for calculating the range of bolt pre-stress of assembled confinement vessels due to the action of the inner impact[J].Journal of Mechanical Strength,2001,23(2):194-197.DOI:10.16579/j.issn.1001.9669.2001.02.020.
[10]西北核技术研究所.承压端盖法兰动态密封性能检测装置:CN201721164405.4[P].2018-02-13.
[11]程帅,陈博,刘文祥,等.基于落锤实验平台的爆炸载荷模拟装置原理性设计[J].现代应用物理,2016,7(4):041002.1-041002.7.CHENG Shuai,CHEN Bo,LIU Wenxiang,et al.Theoretical design of an explosive loading analogue device based on drop hammer test system[J].Modern Applied Physics,2016,7(4):041002.1-041002.7.
[12]孔德仁,狄长安,范启成.塑性测压技术[M].北京:兵器工业出版社,2006.
[13]闻邦椿.机械设计手册第二册[M].北京:机械工业出版社,2012.
[14]Livermore Software Technology Corporation.LS-DYNA keyword user's manual[M].V971.Livermore,California:Livermore Software Technology Corporation,2007.
[15]李会勋,胡迎春,张建中.利用ANSYS模拟螺栓预紧力的研究[J].山东科技大学学报,2006,25(1):57-59.DOI:10.16452/j.cnki.sdkjzk.2006.01.017.LI Huixun,HU Yingchun,ZHANG Jianzhong.Study on simulating bolt pretension by using ANSYS[J].Journal of Shandong University of Science and Technology,2006,25(1):57-59.DOI:10.16452/j.cnki.sdkjzk.2006.01.017.