發(fā)布時間：2018-11-07 19:30

【摘要】：針對爆炸實(shí)驗水池強(qiáng)度設(shè)計問題,利用非線性動力學(xué)程序LS-DYNA對10 kg TNT爆炸后的水中沖擊波傳播規(guī)律及爆炸水池結(jié)構(gòu)動態(tài)響應(yīng)情況進(jìn)行了數(shù)值模擬,對空氣桶和氣泡帷幕削弱水中沖擊波的能力進(jìn)行了定量計算,結(jié)果表明:空氣桶對沖擊波峰值壓力削弱作用接近50%,對比沖量削弱作用達(dá)到16.2%;氣泡帷幕對壁面反射沖擊波的削弱作用高達(dá)86.2%,對比沖量削弱作用達(dá)到75.6%。在此基礎(chǔ)上進(jìn)一步分析了沖擊載荷作用以及結(jié)構(gòu)響應(yīng)機(jī)理,指出了內(nèi)襯鋼板和混凝土圍堰的危險區(qū)域,對爆炸能量在各物質(zhì)間的分配和傳遞規(guī)律進(jìn)行了初步探索,為相關(guān)爆炸水池的工程設(shè)計提供參考。
[Abstract]:Aiming at the problem of strength design of explosion experimental tank, the propagation law of shock wave in water and the dynamic response of explosion pool structure after 10 kg TNT explosion were numerically simulated by nonlinear dynamic program LS-DYNA. The ability of air barrel and bubble curtain to weaken the shock wave in water is calculated quantitatively. The results show that the weakening effect of air bucket on the peak pressure of shock wave is close to 50 and that of contrast impulse is 16.2; The weakening effect of bubble curtain on wall reflection shock wave is up to 86.2 and the contrast impulse weakening effect is 75.6. On this basis, the impact load and the structure response mechanism are further analyzed, the dangerous zone of lining steel plate and concrete cofferdam is pointed out, and the distribution and transfer law of explosion energy among different materials are preliminarily explored. It provides a reference for the engineering design of the related explosion pool.
【作者單位】： 中國華陰兵器試驗中心;解放軍理工大學(xué)野戰(zhàn)工程學(xué)院;
【基金】：總裝備部試驗技術(shù)研究重點(diǎn)項目(2011SY3213001)
【分類號】：O383.1

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