1) initial velocity
破片初速
1.
The results show that adiabatic shear sensitivity falls,and cylinder expansion velocity and initial velocity of fragment increase with increasing of tungsten content on the experimental condition.
结果表明,试验条件下,随着钨含量的增加合金绝热剪切敏感性降低,圆筒膨胀速度增加,破片初速增大;合金的抗剪强度增大,能抑制因内壁剪切裂纹萌生和扩展而产生的卸载,有利于圆筒均匀塑性变形,使得钨合金破片初速增大。
2.
Stresses of the in-explosive cylinder were analyzed,compound criteria for determinating the fracture radius was put forward to calculate the initial velocity of cylinder fragment.
分析内爆炸圆管膨胀破碎过程的应力,提出确定内爆炸圆管断裂半径的复合判据,从理论上预测不同材料圆管的破片初速度。
2) fragments initial velocity
破片初速
1.
The pre-fragments warhead in the detonation process, produces the high temperature high pressure detonation product at the same time broken piece to obtain certain initial velocity to disperse, fragments initial velocity and scattering direction angle are weigh the warhead performance two key parameters.
预制破片战斗部在爆炸过程中,产生高温高压爆轰产物的同时破片获得一定的初速飞散出去,破片初速和飞散方向角是衡量战斗部性能的两个重要参数。
2.
Accordingly the fragments initial velocity and scattering direction angle which distributes along the HE shell axis are gained.
为了获得预控破片战斗部破片的飞散规律,利用ANSYS/LS-DYNA有限元软件对某榴弹壳体膨胀和破片破碎过程进行数值模拟,得到破片初速和飞散方向角沿弹轴曲线分布,与破碎性试验回收破片的统计结果和经验公式都基本一致,这说明模型简化及计算参数的正确性。
3) initial velocity of the fragments
破片初速度
1.
Deducing from the dynamic equations of the inner detonation loaded cylindrical wall, along with Taylor s complete fracture law of the cylindrical tube, we get the mathematical expressions of the fracture strain ,the fracture radius,the mean fracture time and the initial velocity of the fragments.
从柱壳运动的控制方程出发,应用壳壁发生贯穿破裂的Taylor判据,给出了内部爆炸加载下金属圆筒壳壁的运动轨迹、平均破裂时间、破裂应变、半径及破片初速度的解析表达式。
4) Projectile original velocity
片梭初速
5) fragment velocity
破片速度
1.
A test method named target wires measurement was described,which was proved to be efficient and convenient in measuring the fragment velocity after explosion of detonator.
介绍了雷管破片速度的靶线测定及其分布的试验方法,给出了该测试条件下破片速度的衰减曲线以及沿雷管轴向的分布曲线。
2.
3D numerical simulation on the explosive driving to certain column charge within a hollow is a- chieved by using ANSYS/LS-DYNA program,and the change history of fragment velocity is obtained.
文中用 ANSYS/LS—DYNA 非线性动力学有限元分析程序,对一定空腔装药结构的爆轰驱动过程进行了三维数值模拟,得到了破片速度的变化规律。
3.
The characteristics of the fragment velocity distribution of forward-firing warheads with different charge length/diameter ratio under center point initiation and plane wave initiation was studied by the method of numerical simulation and experiments.
结果表明,装药端面中心位置处破片速度最高,沿径向大致呈抛物线趋势衰减;随着长径比的增大,破片速度增大,但增大幅度趋缓;相对于中心单点起爆,平面起爆提高了装药爆轰的瞬时度,减弱了爆轰产物气体侧向稀疏作用,能够有效提高破片速度,且速度增益在中心位置处最大,沿径向增益趋缓;就装药结构来说,长径比越大,速度增益越小,平面起爆能够更有效地提高小长径比战斗部的破片速度增益。
6) fragments speed
破片速度
1.
The calculation formula of diametric fragments speed variation is deduced.
研究了金属壳雷管径向破片速度理论最大值的计算方法,根据能量守恒定律和金属壳雷管的基本数据及一些基本假设推导了金属壳雷管径向破片速度变化的计算公式。
补充资料：破记录
破记录
pòjìlù
[break a record] 打破以往记录下来的最好成绩.
例:国奥队第一次在国际比赛中破纪录
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条