CAJ | 학술논문

应用 ANSYS/LS？DYNA有限元程序建模，在验证模型及参数选取正确可靠的基础上，研究了地面材料、炸药高度、空气域形状以及炸药当量等参数对马赫波超压的影响。结果表明：对于非近距离的爆炸，不同地面上的马赫波超压峰值相差不大，可简化为刚性地面；建模宜选择刚性壳体地面以及长方体空气域；与经验公式相比，数值模拟的马赫波超压峰值误差随着炸药当量的增大而减小，随着炸药高度的减小而增大。
응용 ANSYS/LS？DYNA유한원정서건모，재험증모형급삼수선취정학가고적기출상，연구료지면재료、작약고도、공기역형상이급작약당량등삼수대마혁파초압적영향。결과표명：대우비근거리적폭작，불동지면상적마혁파초압봉치상차불대，가간화위강성지면；건모의선택강성각체지면이급장방체공기역；여경험공식상비，수치모의적마혁파초압봉치오차수착작약당량적증대이감소，수착작약고도적감소이증대。
A simulation model is established by finite element program ANSYS/LS?DYNA.Based on the correctness and reliability of the model and parameters selection,the influences of different parameters on the Mach wave overpressure, including the ground material,explosive height,air domain shape and explosive equivalent on the Mach wave overpressure are investigated.The numerical results show that:1)For the explosion of non?close range,the Mach wave overpressure peaks on different grounds are similar,which can be simplified as rigid ground.2)Rigid shell ground and cuboid air do-main would be chosen to establish model.3)Comparing with empirical formula,the numerical simulation error of Mach wave overpressure peak decreases with the increase of explosive equivalent,and increases with the increase of explosive height.