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(1) Numerical simulation results of the axial initiation process of annular booster pellet under four-point-synchronous explosive circuit From Fig 1, the specific initiation process of the annular booster pellet can be observed by the numerical simulation, facilitating the analysis and understanding of its initiation mechanism, and providing theoretical guidance for the design of high-energy booster pellet. When t =1.198 娄脤s, two adjacent detonation waves have oblique impacts, and peak value of the pressure increases. When t拢陆1.299 娄脤s, the front of the detonation wave arrives at 10mm of charge height, and the shape of the wave front is obviously wavy, and the distance between the peak and trough is 0.65 mm. When t拢陆2.500 娄脤s, the front of the detonation wave reaches the bottom of the charge, and the shape of wave front is still not too smooth. (2) Numerical simulation results of the radial convergence process of annular booster pellet under four-point-synchronous explosive circuit From Fig 1, the radial convergence process of the annular booster pellet can be observed by the numerical simulation. When annular booster pellet is simultaneously initiated at symmetrical four points, the detonation waves propagate in the axial direction and also along the radial direction of the annular booster pellet at the same time. When detonation wave reaches the internal surface of the booster pellet, it would attenuate into shock wave in the central air medium and propagate to the center axis of the booster pellet. The shock wave propagating to the center axis of the booster pellet is gradually strengthening as well as the axial detonation wave pressure rising. When t=2.400 µs, the shock waves propagating to the annular booster pellet center begin to converge, and the pressure gradually increases. At that time, the detonation wave basically reaches the booster pellet bottom in the axial direction. Because the speed of the shock wave propagating in the booster pellet center is slow, the center convergence time has a certain time delay to the axial detonation. When t=2.900 µs, the center convergence pressure reaches a maximum that Pmax=32.39 Gpa. When t=3.799 µs, the annular booster pellet convergence is over, but the maximum pressure in the center is still high to 29.12 Gpa. This high pressure is helpful for the main charge隆炉s initiation in the center of the annular booster pellet. When t=0.799娄脤s, peak pressure of the annular booster pellet under eight-point-synchronous explosive circuit is 25.43Gpa, while peak pressure of the annular booster pellet under four-point-synchronous explosive circuit is only 25.90Gpa. By comparison of the two waveforms when the detonation waves reach at 10mm of the booster pellet height, it can be seen that the waveform of annular booster pellet under eight-point-synchronous explosive circuit is much better than that of under four-point. When the annular booster pellet height is unchanged, the axial waveform of the annular booster pellet under four-point-synchronous explosive circuit is hard to be smooth, so that the axial output energy is not strong, having a great shortage to enhance the initiation capacity of the annular booster pellet. From the simulation results, the shortage can be improved by increasing the number of initiation points. But increasing the number of initiation points means increasing the level of synchronous explosive circuit, and the bigger the explosive circuit level is,the larger the synchronous time deviation is, which would have adverse effects on the output waveform of the annular booster pellet. The results of numerical simulation show that the initiation capacity of the annular booster pellet under eight-point-synchronous explosive circuit is much better than that under four-point in the case of ensuring smaller deviation of the synchronous time. By comparison the radial convergence processes of annular booster pellet between four-point and eight-point-synchronous explosive circuit, the convergence time of eight-point initiation is 0.2 µs ahead of that of four-point, and the time reaching maximum convergence pressure is 0.4 µs ahead of that of four-point, and peak pressure is 9.24 Gpa bigger than that of four-point, and convergence end time is 0.199 µs ahead of that of four-point, and at the end of the convergence, peak pressure in the center of the booster pellet bottom is 2.46Gpa bigger than that of four-point. Since the detonation wave of annular booster pellet under eight-point initiation has good axial consistency, the speed of convergence to the center is quick and the pressure is high. The number of initiation points not only affects the axial output, but also has a significant effect on the convergence process in the center of the booster pellet. In all, the initiation capacity of the annular booster pellet under eight-point-synchronous explosive circuit is much better than that under four-point in the case of ensuring smaller deviation of the synchronous time. 拢篓1拢漏脣脛碌茫脥卢虏陆脝冒卤卢禄路脨脦脳掳脪漏脰谩脧貌脝冒卤卢鹿媒鲁脤脢媒脰碌脛拢脛芒陆谩鹿没 脥篓鹿媒脢媒脰碌脛拢脛芒驴脡脪脭鹿脹虏矛碌陆禄路脨脦麓芦卤卢脪漏脰霉戮脽脤氓碌脛脝冒卤卢鹿媒鲁脤拢卢脫脨脌没脫脷路脰脦枚潞脥脕脣陆芒脝盲脝冒卤卢禄煤脌铆拢卢脦陋赂脽脛脺麓芦卤卢脪漏脰霉脡猫录脝脤谩鹿漏脌铆脗脹脰赂碌录隆拢麓脫脪脭脡脧脣脛碌茫脝冒卤卢禄路脨脦麓芦卤卢脪漏脰霉脰谩脧貌脝冒卤卢鹿媒鲁脤脩鹿脕娄脭脝脥录驴麓拢卢卤卢潞盲虏篓脭脷露脭鲁脝碌脛脣脛碌茫脥卢脢卤脝冒卤卢拢卢碌卤t拢陆1.198娄脤s脢卤拢卢脧脿脕脷碌脛脕陆赂枚卤卢潞盲虏篓路垄脡煤脨卤脜枚脳虏拢卢脩鹿脕娄碌脛路氓脰碌脭枚录脫拢卢碌卤t拢陆1.299娄脤s脢卤拢卢卤卢潞盲虏篓碌脛脟掳脩脴虏篓脮贸脙忙碌陆麓茂脳掳脪漏10mm赂脽露脠碌脛脦禄脰脙拢卢麓脣脢卤碌脛虏篓脮贸脙忙脨脦脳麓鲁脢脙梅脧脭碌脛虏篓脌脣脳麓拢卢虏篓路氓潞脥虏篓鹿脠脰庐录盲碌脛戮脿脌毛0.65mm隆拢碌卤t拢陆2.500娄脤s脢卤拢卢卤卢潞盲虏篓碌脛脟掳脩脴虏篓脮贸脙忙碌陆麓茂脳掳脪漏碌脳虏驴拢卢麓脣脢卤碌脛虏篓脮贸脙忙脨脦脳麓脪脌脠禄虏禄脤芦脝陆脮没隆拢 拢篓2拢漏脣脛碌茫脝冒卤卢禄路脨脦戮露脧貌禄茫戮脹鹿媒鲁脤脢媒脰碌脛拢脛芒 麓脫脪脭脡脧脣脛碌茫脝冒卤卢禄路脨脦戮露脧貌禄茫戮脹鹿媒鲁脤脢媒脰碌脛拢脛芒陆谩鹿没拢卢驴脡脪脭鹿脹虏矛碌陆禄路脨脦麓芦卤卢脪漏脰霉戮脽脤氓碌脛戮露脧貌禄茫戮脹鹿媒鲁脤隆拢禄路脨脦麓芦卤卢脪漏脰霉脭脷露脭鲁脝碌脛脣脛碌茫脥卢脢卤脝冒卤卢拢卢卤卢潞盲虏篓脭脷脩脴脰谩脧貌麓芦虏楼碌脛脥卢脢卤拢卢脪虏脩脴禄路脨脦麓芦卤卢脪漏脰霉戮露脧貌麓芦虏楼拢卢碌卤卤卢潞盲虏篓麓芦鲁枚脪漏脰霉脛脷卤铆脙忙脢卤拢卢脭脷脰脨脨脛驴脮脝酶陆茅脰脢脰脨脣楼录玫鲁脡鲁氓禄梅虏篓录脤脨酶脧貌脪漏脰霉脰脨脨脛脰谩脧脽麓芦虏楼拢卢脣忙脳脜脰谩脧貌卤卢潞盲虏篓脩鹿脕娄脡媒赂脽拢卢脧貌脪漏脰霉脰脨脨脛麓芦虏楼碌脛鲁氓禄梅虏篓脪虏脰冒陆楼录脫脟驴隆拢碌卤t=2.400µs脢卤拢卢脧貌禄路脨脦麓芦卤卢脪漏脰霉脰脨脨脛麓芦虏楼碌脛鲁氓禄梅虏篓驴陋脢录脜枚脳虏禄茫戮脹拢卢脩鹿脕娄脰冒陆楼脭枚赂脽隆拢麓脣脢卤卤卢潞盲虏篓脭脷脰谩脧貌脪脩禄霉卤戮碌陆麓茂脪漏脰霉碌脳虏驴隆拢脫脡脫脷脪漏脰霉脰脨脨脛麓芦虏楼碌脛鲁氓禄梅虏篓脣脵露脠脗媒拢卢脪貌露酶脰脨脨脛禄茫戮脹脢卤录盲陆脧脰谩脧貌卤卢潞盲脫脨脪禄露篓脢卤录盲脩脫鲁脵隆拢t=2.900µs脢卤拢卢脰脨脨脛禄茫戮脹脩鹿脕娄麓茂碌陆脳卯麓贸拢卢脦陋Pmax=32.39Gpa拢卢碌卤t=3.799µs脢卤拢卢 禄路脨脦麓芦卤卢脪漏脰霉禄茫戮脹陆谩脢酶拢卢碌芦脰脨脨脛脳卯麓贸脩鹿脕娄脠脭赂脽麓茂29.12Gpa隆拢脮芒脩霉赂脽碌脛脩鹿脕娄拢卢脧脭脠禄脫脨脌没脫脷禄路脨脦麓芦卤卢脪漏脰霉脰脨脨脛脰梅脳掳脪漏碌脛脝冒卤卢隆拢 掳脣碌茫脥卢虏陆脝冒卤卢禄路脨脦麓芦卤卢脪漏脰霉脭脷t=0.799娄脤s脢卤拢卢脩鹿脕娄路氓脰碌脪脩麓茂碌陆25.43Gpa拢卢露酶脣脛碌茫脭脷t=1.299µs脢卤, 脩鹿脕娄路氓脰碌虏脜麓茂碌陆25.90Gpa隆拢卤脠陆脧露镁脮脽卤卢潞盲虏篓脟掳脩脴碌陆麓茂脪漏脰霉10mm赂脽露脠脦禄脰脙脢卤碌脛虏篓脨脦拢卢驴脡脪脭驴麓鲁枚掳脣碌茫脥卢虏陆脝冒卤卢碌脛虏篓脨脦脪陋脭露脭露潞脙脫脷脣脛碌茫脥卢虏陆脝冒卤卢碌脛虏篓脨脦隆拢碌卤禄路脨脦脳掳脪漏赂脽露脠虏禄卤盲脢卤拢卢脣脛碌茫脝冒卤卢碌脛禄路脨脦脳掳脪漏脰谩脧貌虏篓脨脦潞脺脛脩麓茂碌陆脝陆脝毛拢卢麓脫露酶脢鹿脝盲脰谩脧貌脝冒卤卢脥镁脕娄录玫脠玫拢卢露脭路垄禄脫禄路脨脦麓芦卤卢脪漏脰霉脝冒卤卢脥镁脕娄脫脨潞脺麓贸虏禄脳茫隆拢麓脫脛拢脛芒陆谩鹿没脌麓驴麓拢卢脭枚录脫脝冒卤卢碌茫赂枚脢媒驴脡脪脭脙脰虏鹿脮芒脪禄虏禄脳茫隆拢碌芦脢脟脭枚录脫脝冒卤卢碌茫赂枚脢媒脪芒脦露脳脜脭枚录脫脥卢虏陆脝冒卤卢脥酶脗莽碌脛录露脢媒拢卢脝冒卤卢脥酶脗莽碌脛录露脢媒脭陆麓贸拢卢脝盲脢盲鲁枚脥卢虏陆脨脭脢卤录盲脝芦虏卯戮脥脭陆麓贸拢卢脮芒陆芦露脭禄路脨脦脳掳脪漏碌脛脢盲鲁枚虏篓脨脦虏煤脡煤虏禄脌没脫掳脧矛拢卢脪貌麓脣拢卢脪陋赂霉戮脻戮脽脤氓脟茅驴枚脠隆脡谩隆拢脢媒脰碌脛拢脛芒陆谩鹿没脧脭脢戮拢卢脭脷卤拢脰陇陆脧脨隆碌脛脥卢虏陆脢卤录盲脝芦虏卯碌脛脟茅驴枚脧脗拢卢掳脣碌茫脥卢虏陆脝冒卤卢禄路脨脦麓芦卤卢脪漏脰霉碌脛脰谩脧貌脝冒卤卢脛脺脕娄潞脙脫脷脣脛碌茫脥卢虏陆脝冒卤卢禄路脨脦麓芦卤卢脪漏脰霉隆拢 露脭卤脠脣脛碌茫隆垄掳脣碌茫脝冒卤卢碌脛禄路脨脦麓芦卤卢脪漏脰霉戮脽脤氓碌脛戮露脧貌禄茫戮脹鹿媒鲁脤拢卢掳脣碌茫脝冒卤卢禄路脨脦脰脨脨脛脰谩脧脽禄茫戮脹脢卤录盲陆脧脣脛碌茫脤谩脟掳0.2µs拢卢禄茫戮脹脩鹿脕娄麓茂碌陆脳卯麓贸脰碌脢卤录盲脤谩脟掳0.4µs拢卢脩鹿脕娄路氓脰碌陆脧脣脛碌茫麓贸9.24Gpa拢卢禄茫戮脹陆谩脢酶脢卤录盲陆脧脣脛碌茫脤谩脟掳0.199µs拢卢禄茫戮脹陆谩脢酶脢卤脪漏脰霉碌脳虏驴脰脨脨脛脩鹿脕娄路氓脰碌陆脧脣脛碌茫麓贸2.46Gpa隆拢脫脡脫脷掳脣碌茫脝冒卤卢碌脛禄路脨脦麓芦卤卢脪漏脰霉卤卢潞盲虏篓脰谩脧貌脪禄脰脗脨脭潞脙拢卢脪貌露酶脧貌脰脨脨脛禄茫戮脹脣脵露脠驴矛拢卢脩鹿脕娄脪虏赂脽隆拢驴麓脌麓拢卢脝冒卤卢碌茫脢媒虏禄陆枚脫掳脧矛脰谩脧貌脢盲鲁枚拢卢脥卢脢卤露脭脪漏脰霉脰脨脨脛禄茫戮脹鹿媒鲁脤脪虏脫脨脧脭脰酶脫掳脧矛隆拢脳脺碌脛脌麓驴麓拢卢掳脣碌茫脝冒卤卢碌脛禄路脨脦麓芦卤卢脪漏脰霉碌脛脝冒卤卢脛脺脕娄麓贸脫脷脣脛碌茫隆拢 [ 脌麓脳脭驴脝脩脨录脪脳氓 驴矛脌脰录脪脳氓 ] |
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2楼2012-03-20 14:41:53
curton
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【答案】应助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
hls85915: 金币+20, 翻译EPI+1, ★★★很有帮助, 只能给你20个BB。请笑纳 2012-03-21 16:42:38
hls85915: 金币+20, 翻译EPI+1, ★★★很有帮助, 只能给你20个BB。请笑纳 2012-03-21 16:42:38
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can be observed by 修改为 observe by，科技论文最好不要出现被动。 is simultaneously initiated 修改为 simultaneously initiate，同上。 in the axial direction and also along the radial direction of 这个also可以去掉。 propagate 出现多次，能不能用相同意思的词代替。 At that time 貌似科技论文中一般用then basically 基本的，科技论文中不用模棱两可的词，建议去掉 high pressure 建议修改成 high-pressure By comparison of the two waveforms when the detonation waves reach at 10mm of the booster pellet height, it can be seen that the waveform of annular booster pellet under eight-point-synchronous explosive circuit is much better than that of under four-point. 太长 句型太复杂，科技论文不需要。 When the annular booster pellet height is unchanged, the axial waveform of the annular booster pellet under four-point-synchronous explosive circuit is hard to be smooth, so that the axial output energy is not strong, having a great shortage to enhance the initiation capacity of the annular booster pellet. 同上。 can be improved by 建议修改成 improve by 科技论文不需要被动。 But increasing the number of initiation points means increasing the level of synchronous explosive circuit, and the bigger the explosive circuit level is,the larger the synchronous time deviation is, which would have adverse effects on the output waveform of the annular booster pellet. 太长，建议修改。 in the case of 建议修改成 for ， 简单。 By comparison the radial convergence processes of annular booster pellet between four-point and eight-point-synchronous explosive circuit, the convergence time of eight-point initiation is 0.2 µs ahead of that of four-point, and the time reaching maximum convergence pressure is 0.4 µs ahead of that of four-point, and peak pressure is 9.24 Gpa bigger than that of four-point, and convergence end time is 0.199 µs ahead of that of four-point, and at the end of the convergence, peak pressure in the center of the booster pellet bottom is 2.46Gpa bigger than that of four-point.92个单词，很吓人的，建议修改成短句 |
3楼2012-03-20 21:49:06
4楼2012-03-20 22:40:41
curton
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5楼2012-03-21 07:02:49