爆炸载荷作用下夹层玻璃动态响应的数值模拟
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摘要
为研究爆炸载荷作用下夹层玻璃的动态响应,利用有限元软件LS-DYNA对爆炸载荷作用下夹层玻璃的动态响应进行了数值模拟。通过改变外层玻璃与内层玻璃的厚度,系统地研究不同组合下夹层玻璃的动态响应规律,描述爆炸产物与结构相互作用过程,分析夹层玻璃不同部分的能量吸收效率,观察夹层玻璃的裂纹扩展过程。结果表明:玻璃厚度的改变对结构动态响应有明显影响,随着爆炸距离增加,影响程度逐渐减小;爆炸产物先于空气冲击波对玻璃的冲击有损伤破坏作用;结构外层玻璃的能量吸收效率最大,聚乙烯醇缩丁醛胶层次之,内层玻璃吸收效率最小;爆炸载荷下夹层玻璃的裂纹以环向裂纹为主,径向裂纹相对较少。
The dynamic response of laminated glass subjected to blast load is simulated using LS-DYNA finite element software in order to study the dynamic response of laminated glass under explosive loading.The rules in dynamic response of laminated glass are studied systematically by changing the thicknesses of the external and internal glasses without change of total thickness,the interaction between explosion products is presented,the energy absorption efficiencies of different parts of the laminated glass are analyzed,and the crack propagation process is also observed. The results indicate that the variation of glass thickness has a clear effect on the dynamic response of structure at shorter explosive distance,and the influence,however,is slight with increase in explosive distance. Explosion products damage the glass before air shock wave does. The external glass has the maximum energy absorption efficiency,the PVB glue layer has the less,and the internal glass has the least. Under blast load,the laminated glass has most circumferential cracks and relatively few radial cracks on it.
The dynamic response of laminated glass subjected to blast load is simulated using LS-DYNA finite element software in order to study the dynamic response of laminated glass under explosive loading.The rules in dynamic response of laminated glass are studied systematically by changing the thicknesses of the external and internal glasses without change of total thickness,the interaction between explosion products is presented,the energy absorption efficiencies of different parts of the laminated glass are analyzed,and the crack propagation process is also observed. The results indicate that the variation of glass thickness has a clear effect on the dynamic response of structure at shorter explosive distance,and the influence,however,is slight with increase in explosive distance. Explosion products damage the glass before air shock wave does. The external glass has the maximum energy absorption efficiency,the PVB glue layer has the less,and the internal glass has the least. Under blast load,the laminated glass has most circumferential cracks and relatively few radial cracks on it.
引文
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[19]Wu J,Liu J B,Du Y X.Experimental and numerical study on the flight and penetration properties of explosively-formed projectile[J].International Journal of Impact Engineering,2007,34:1147-1162.
[20]李胜杰.爆炸荷载下夹层玻璃的动态响应及裂纹扩展的研究[D].太原:太原理工大学,2015:25-37.LI Sheng-jie.Study on the dynamic response and cracks propagation of laminated glass subjected to blast load[D].Taiyuan:Taiyuan University of Technology,2015:25-37.(in Chinese)
[2]Larcher M,Solomos G,Casadei F,et al.Experimental and numerical investigations of laminated glass subjected to blast loading[J].International Journal of Impact Engineering,2012,39(1):42-50.
[3]Larcher M,Gebbeken N,Teich M,et al.Simulation of laminated glass loaded by air blast waves[J].Applied Mechanics and Materials,2011,82:69-74.
[4]Kedrinskii V K,Skulkin A A.Experimental model of the role of cracks in the mechanism of explosive eruption of St.Helens-80[J].Technical Physics,2017,62(7):1024-1029.
[5]Campbell K,Judge E J,Dirmyer M R,et al.Synthesis and characterization of surrogate nuclear explosion debris:urban glass matrix[J].Journal of Radioanalytical&Nuclear Chemistry,2017,314(1):197-206.
[6]Weggel D C,Zapata B J.Laminated glass curtain walls and laminated glass lites subjected to low-level blast loading[J].Journal of Structural Engineering,2008,134(3):466-477.
[7]Hidallana-Gamage H D,Thambiratnam D P,Perera N J.Failure analysis of laminated glass panels subjected to blast load[J].Engineering Failure Analysis,2014,36:14-29.
[8]李峰.玻璃幕墙结构在爆炸荷载作用下的动力响应分析[D].西安:长安大学,2009:68-76.LI Feng.Analysis of dynamic response of glass curtain wall structure subjected to blast load[D].Xi'an:Chang'an University,2009:68-76.(in Chinese)
[9]潘婷.爆炸荷载作用下几种框支玻璃的抗爆实验研究[D].绵阳:西南科技大学,2012:18-66.PAN Ting.The experiment research on anti-explosion performance of kinds of frame glass that under explosion load[D].Mianyang:Southwest University of Science and Technology,2012:18-66.(in Chinese)
[10]李翼祺,马素贞.爆炸力学[M].北京:科学出版社,1992:237-317.LI Yi-qi,MA Su-zhen.Explosion mechanics[M].Beijing:Science Press,1992:237-317.(in Chinese)
[11]北京工学院八系.爆炸及其作用:下[M].北京:国防工业出版社,1979:247-250.The Eighth Department,Beijing Institute of Technology.Explosion and its role:volumeⅡ[M].Beijing:National Defense Industry Press,1979:247-250.(in Chinese)
[12]敬霖.强动载荷作用下泡沬金属夹芯壳结构的动力学行为及其失效机理硏究[D].太原:太原理工大学,2012:106-109.JING Lin.The dynamic mechanical behavior and failure mechanism of sandwich shells with metallic foam cores under intensive load[D].Taiyuan:Taiyuan University of Technology,2012:106-109.(in Chinese)
[13]LS-DYNA Version 971 user's manual[M].Livemore,CA,US:Livermore Software Technology Corporation,2007:35-83.
[14]Cronin D S,Bui K,Kaufmann C,et al.Implementation and validation of the Johnson-Holmquist ceramic material model in LS-DYNA[C]∥Proceedings of the 4th European LS-DYNA Users Conference.Uim,Germany:Livemore Software Technology Corporation,2003:47-60.
[15]Johnson G R,Holmquist T J.A computational constitutive model for brittle materials subjected to large strains,high rates and high pressure[M]∥Meyers M A,Murr L E,Staudhammer K P.Shock Wave and High Strain-rate Phenomena in Materials.New York,NY,US:Marcel Dekker Inc.,1992:1075-1081.
[16]Johnson G R,Holmquist T J.An improved computational constitutive model for brittle materials[C]∥AIP Conference Proceedings.Foz Do Iguacu,Brazil:American Institute of Physics,1994:981-984.
[17]Xu J,Li Y B,Ge D Y.Experimental investigation on constitutive behavior of PVB under impact loading[J].International Journal of Impact Engineering,2011,38:106-114
[18]张奇,张若京.ALE方法在爆炸数值模拟中的应用[J].力学季刊,2005,26(4):639-642.ZHANG Qi,ZHANG Ruo-jing.Numerical simulation of explosion using ALE method[J].Chinese Quarterly of Mechanics,2005,26(4):639-642.(in Chinese)
[19]Wu J,Liu J B,Du Y X.Experimental and numerical study on the flight and penetration properties of explosively-formed projectile[J].International Journal of Impact Engineering,2007,34:1147-1162.
[20]李胜杰.爆炸荷载下夹层玻璃的动态响应及裂纹扩展的研究[D].太原:太原理工大学,2015:25-37.LI Sheng-jie.Study on the dynamic response and cracks propagation of laminated glass subjected to blast load[D].Taiyuan:Taiyuan University of Technology,2015:25-37.(in Chinese)