爆破器材
爆破器材
폭파기재
2013年
6期
19-23
,共5页
水下爆炸%气泡脉动%最大半径%脉动周期%数值模拟
水下爆炸%氣泡脈動%最大半徑%脈動週期%數值模擬
수하폭작%기포맥동%최대반경%맥동주기%수치모의
underwater explosion%bubble pulse%maximum radius%pulsation period%numerical simulation
利用AUTODYN软件模拟PETN药柱和TNT球形装药水下爆炸气泡脉动的过程，分析了脉动周期与最大半径随装药量、爆炸深度的变化规律。结果表明：当炸药所处的爆炸深度一定时，气泡膨胀最大半径与初始半径的比值、气泡脉动周期与初始半径的比值均为一个定值；一定质量的TNT装药水下爆炸时，气泡最大半径随爆炸深度呈指数形式变化且该变化规律与装药量无关；在不考虑重力的影响下，装药的爆炸深度一定时，当装药的初始半径成倍增加时，气泡脉动最大半径亦成相同倍数增加。
利用AUTODYN軟件模擬PETN藥柱和TNT毬形裝藥水下爆炸氣泡脈動的過程，分析瞭脈動週期與最大半徑隨裝藥量、爆炸深度的變化規律。結果錶明：噹炸藥所處的爆炸深度一定時，氣泡膨脹最大半徑與初始半徑的比值、氣泡脈動週期與初始半徑的比值均為一箇定值；一定質量的TNT裝藥水下爆炸時，氣泡最大半徑隨爆炸深度呈指數形式變化且該變化規律與裝藥量無關；在不攷慮重力的影響下，裝藥的爆炸深度一定時，噹裝藥的初始半徑成倍增加時，氣泡脈動最大半徑亦成相同倍數增加。
이용AUTODYN연건모의PETN약주화TNT구형장약수하폭작기포맥동적과정，분석료맥동주기여최대반경수장약량、폭작심도적변화규률。결과표명：당작약소처적폭작심도일정시，기포팽창최대반경여초시반경적비치、기포맥동주기여초시반경적비치균위일개정치；일정질량적TNT장약수하폭작시，기포최대반경수폭작심도정지수형식변화차해변화규률여장약량무관；재불고필중력적영향하，장약적폭작심도일정시，당장약적초시반경성배증가시，기포맥동최대반경역성상동배수증가。
The bubble pulse process of PETN grain and TNT spherical charge was simulated by AUTODYN .The rules of pulsation period and maximum radius which change with the mass and depth of the charge were analyzed .The results show that when the charge at a certain depth , the ratio of maximum radius and initial radius is a fixed value .It is the same for the ratio of pulsation period and initial radius .When a certain quality of TNT blasted underwater , the bubble maximum radius change exponentially with the depth of the charge and the change rules have nothing to do with the charge quality.Without considering the effect of gravity , when the charge blasts at a certain depth , with the initial radius of charge increasing multiplied , the bubble maximum radius becomes the same multiple increase .
