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摘要: 针对水中装药爆炸直达冲击波在自由面反射形成表面空穴的问题,应用水中爆炸冲击波声学近似 理论,认为冲击波不能穿过空穴传播,得出一维水中爆炸表面空穴范围、水质点运动速度、水层抛射速度、空穴 闭合时间以及空穴闭合产生的压力峰值与持续时间等,并将结论扩展到二维空间。通过具体算例,对比本方 法与F.A.Costanzo等采用Arons方法确定的空穴范围,上边界两者一致,下边界在炸药上方空穴边界小于 Arons方法的,远离装药处的下边界大于Arons方法的。可以应用冲击波声学近似理论计算水中爆炸空穴闭 合载荷。Abstract: Thepresentstudyisaimedattheproblemofbulkcavitationfromunderwaterexplosion. Basedonthetheoryofacousticapproximationandconsideredthatthereflectedrarefactivewavecan notspreadthroughbulkcatvitation,theonsetandterminationdepthofbulkcavitaion,thewaterparticlevelocityatvariousinitialdepth, thewaterspallvelocity,thespallclosuredepth,thespallclosuretime, thepeakpressureandthedurationhavebeenobtainedinone-dimensionandtwo-dimensions. Thecontrastbetweentheauthors methodandthe Arons methodshowsthattheupper boudaryofbulkcavitationfromauthorsmethodisidenticalwiththeAronsmethod,andthelower bouderyislessthanAronsatthelocationclosetochargeandmorethanAronsatthelocationapart fromcharge.Acousticapproximationtheorycancalculatetheloadfromclosureofbulkcavitation.
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Key words:
- mechanicsofexplosion /
- bulkcavitation /
- shockwave /
- underwaterexplosion
期刊类型引用(3)
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