南京理工大学学报(自然科学版)
南京理工大學學報(自然科學版)
남경리공대학학보(자연과학판)
JOURNAL OF NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY
2015年
1期
15-19
,共5页
李宏达%李欣%孟宪江%杨青川%詹艳艳%赵红阳%车龙
李宏達%李訢%孟憲江%楊青川%詹豔豔%趙紅暘%車龍
리굉체%리흔%맹헌강%양청천%첨염염%조홍양%차룡
高压脉冲%临界击穿%岩混材料%能量密度%电子束轨迹
高壓脈遲%臨界擊穿%巖混材料%能量密度%電子束軌跡
고압맥충%림계격천%암혼재료%능량밀도%전자속궤적
high voltage pulse%critical breakdown%rock mixed materials%energy density%electron beam trajectory
为了研究高压脉冲对岩混材料目标的击穿规律,该文通过计算机仿真软件模拟高压脉冲对岩混材料块的作用过程,研究电子束运动轨迹及其能量密度分布的变化。结果表明:趋于临界击穿条件下,电极端自由电子的倍增效应越发显著,输入端发生雪崩击穿并表现出电子束呈现边界收窄的趋势,同时电极尖端能量密度分布趋于聚焦,与实验所测输出电流峰值越高,波形脉宽越窄的现象一致。该研究可为高效破碎岩混材料相关应用提供技术依据。
為瞭研究高壓脈遲對巖混材料目標的擊穿規律,該文通過計算機倣真軟件模擬高壓脈遲對巖混材料塊的作用過程,研究電子束運動軌跡及其能量密度分佈的變化。結果錶明:趨于臨界擊穿條件下,電極耑自由電子的倍增效應越髮顯著,輸入耑髮生雪崩擊穿併錶現齣電子束呈現邊界收窄的趨勢,同時電極尖耑能量密度分佈趨于聚焦,與實驗所測輸齣電流峰值越高,波形脈寬越窄的現象一緻。該研究可為高效破碎巖混材料相關應用提供技術依據。
위료연구고압맥충대암혼재료목표적격천규률,해문통과계산궤방진연건모의고압맥충대암혼재료괴적작용과정,연구전자속운동궤적급기능량밀도분포적변화。결과표명:추우림계격천조건하,전겁단자유전자적배증효응월발현저,수입단발생설붕격천병표현출전자속정현변계수착적추세,동시전겁첨단능량밀도분포추우취초,여실험소측수출전류봉치월고,파형맥관월착적현상일치。해연구가위고효파쇄암혼재료상관응용제공기술의거。
In order to summarize the breakdown rules of the rock mixed materials targets with high voltage pulse, the effect of the high voltage pulse on the rock mixed materials block process is simulated through a computer simulation software. Electron beam trajectories and energy density dis-tribution changes from the attack are analysed. The research results show that:under the critical breakdown conditions, the free electron multiplier effect of the electrode end is even more remarkable. The avalanche breakdown shows that the present boundary of the electron beam is narrowing in the input, the electrode tip energy density distribution tends to be focused, and the measured output current peak value is higher. The more narrow the pulse width waveform is,the more effective the rock mixed materials breakdow is related.