论文部分内容阅读
运用IMPACT3D编码模拟计算了40kg TNT炸药球爆炸在塔体内壁8个特征点上产生的反射超压波形,从而得到各特征点反射超压峰值和其平均值及其正相作用时间;将爆炸塔壳体的运动简化成无阻尼的单自由度振动,由此可导出动力系数Cd的计算表达式,塔体的等效静载荷则是特征点平均超压峰值与动力系数之积。
Using IMPACT3D coding simulation, the reflected overpressure waveforms generated at the eight characteristic points of the inner wall of the tower body by 40kg TNT explosive ball were calculated, and the peak value of the overpressure of each characteristic point and its average value and its normal phase action time were obtained. The movement of the shell is simplified to an un-damped one-degree-of-freedom vibration. From this, the calculation formula for the dynamic coefficient Cd can be deduced. The equivalent static load of the tower is the product of the average overpressure peak of the characteristic point and the dynamic coefficient.