CAJ | 학술논문

利用AUTODYN-2D软件对1000kg TNT装药在空气中爆炸的情况,分别进行无限空气中一维数值模拟与有一定地面爆高高度二维数值模拟,结果表明:超压峰值的计算结果与经验公式的计算结果具有较好的一致性,在一定的范围内数值模拟很好的模拟了爆炸冲击波传播过程.在此基础上分析了爆高高度的影响,研究表明:在一定爆高高度情况下较触地爆炸,近场(水平距离S<10m)时超压峰值在随着h的增大而减小;远场(S>30m)冲击波峰值到达时间较晚,在炸高与水平距离之比h/S=0.1时超压峰值达到最大值.
이용AUTODYN-2D연건대1000kg TNT장약재공기중폭작적정황,분별진행무한공기중일유수치모의여유일정지면폭고고도이유수치모의,결과표명:초압봉치적계산결과여경험공식적계산결과구유교호적일치성,재일정적범위내수치모의흔호적모의료폭작충격파전파과정.재차기출상분석료폭고고도적영향,연구표명:재일정폭고고도정황하교촉지폭작,근장(수평거리S<10m)시초압봉치재수착h적증대이감소;원장(S>30m)충격파봉치도체시간교만,재작고여수평거리지비h/S=0.1시초압봉치체도최대치.
By using software of AUTODYN-2D, a thousand kilograms of TNT exploding in air is simulated, and the computed results are compared with experience formula, good agreements are got. The result implies that the shock wave propagation is simulated well in certain range. Base on the research, the influence of the explosion height is analyzed. The peak overpressure of a certain height of explosion arrives later than on the ground, the value decreases with the increasing of explosion height when horizon distance S below 10 meters and reaches highest when the ratio of explosion height verse S equal 0.1in far away (S>30m). It can be used to forecast of shock wave peak overpressure of large amount of TNT in air at distance far away from the explosion center and will be useful for reference in evaluating the damage effect on target.