炸药地面接触爆炸下土中感生地冲击的实用计算方法

为了分析炸药地面接触爆炸下空气冲击波引起的感生地冲击,利用数值模拟结果以及试验数据,对根据一维平面波理论和特征线解法得到的空气冲击波为突加三角形荷载的感生地冲击的理论计算公式进行修正,提出了炸药地面接触爆炸下土中感生地冲击的实用计算方法,分析了炸药地面接触爆炸下土中感生地冲击的传播规律以及本文建立的实用计算公式的特点。与试验数据以及数值模拟结果对比表明,提出的计算方法基本反映了炸药地面接触爆炸下土中感生地冲击的传播特性。

Practicable calculating method of indirect ground shock in soil at surface contact explosion

T o study the indirect gro und shock produced by air shock w av e w ith short durat ion t ime under co nvent io nal ex plosions, the theory fo rmulas of indirect gr ound shock caused by air shock w ave of sudden t riang le ut ilizing the o ne dimensio n plane w ave theo ry and the metho d of characteristic line w ere amended according to the test data and the numer ical simulatio n result s. T hen, the pract icable calculat ing metho d of indirect g round shock pro duced by the conventional surface contact ex plo sion w as proposed. The pro pagat ing law o f the indirect g round shock produced by the co nvent io nal surface co ntact explosion was analyzed, and the char acterist ics of the pract icable calculat ing formulas set up in this paper w ere demonstrated. In cont rast with the test and the numerical simulat ion, the amended formulas are basically co nsistent , w hich show s that the calculat ing method can w ell r ef lect the law o f the indirect ground shock at a sur face co ntact ex plosion t ransmit t ing in the so il