Influence of length/diameter ratio of explosive charge on in-tunnel blast peak pressure;
装药长径比对坑道中冲击波峰值压力影响的试验
The results indicate that: the cavity radius becomes stable at approximately 6000μs;the blasting pressure waves mainly are transmitted horizontally;the peak pressure has a negative logarithm relationship with distance perpendicular to the charging bisector;and the valid influence area r.
应用ANSYS/LS-DYNA有限元程序对条形装药黄土地基中爆炸过程进行了三维数值模拟,发现在6000μs爆炸空腔已基本稳定,条形装药爆炸产生的压力波以水平方向传播为主,装药中垂线方向爆炸产生的峰值压力与离中垂线距离呈负对数关系,土的有效影响范围半径大约为爆炸后形成的空腔半径的4倍。
The experimental results show that the peak pressure and positive pressure actuation duration by the first drilled explosion on the same measuring points are less th.
试验结果表明:在相同试验条件下,相同测点处一次钻孔爆炸所产生的峰值压力和正压作用时间要小于二次钻孔爆炸,其衰减速度要低于二次钻孔爆炸,但其衰减趋势均符合岩石介质中压力波衰减规律。
The paper pointed out that a gas density, fire location and energy are the important factors to the size and display time of the explosion pressure peak value.
指出瓦斯浓度、火源位置及能量是决定爆炸波压力峰值大小及显示时间重要因
This paper is to realize the characteristics and transmitting rules of underwater drilling blasting shock wave through studying the test data and pressure undulance acquired from small test of underwater drilling blasting in shore,considering the effect of depth to the pressure peak value of shock wave.
文章对近岸海底浅水中钻孔爆破小型试验取得的试验数据及压力波形进行研究,初探水深因素对水底钻孔爆破水中冲击波压力峰值的影响。
The results show that the sympathetic explosion of detonator(depends) on both the shock pressure peak and its duration,and the shock pressure peak is the chief factor.
实验得出,雷管在密实介质中受冲击波作用殉爆与否取决于冲击波压力峰值及峰值持续时间的大小,并认为冲击波压力峰值是决定雷管殉爆与否的首要因素,当冲击波压力峰值达1。
The conclusion shows that the elastic deformation of stored material and its speed do good to breaking discharing arch and reducing pressure peak.
结果表明：贮料及仓壁的弹性变形及其传播有助于破拱和削弱压力峰值，从而为全面分析筒仓的工作提供了一定的理论计算依
The purpose of this paper is to examine the calculation method of direct shock wave peak pressure.
探讨了浅层水中爆炸直达波压力峰值的计算方法。
Peak pressure has a cubic function with propagation distance,and influence of density impacting on peak pressure is analyzed.
从中可以看出,爆源点的最大压力值,并不是整个过程的最大值;爆炸压力峰值与传播距离呈三次函数关系,瓦斯浓度对爆炸压力峰值影响较大;火焰速度随着传播距离的加长而依次增大,瓦斯浓度对火焰传播速度也有比较大的影响。
Effects of fuel-supply position on detonation waves and working frequency in an aero-valve pulse detonation engine
气动阀式脉冲爆震发动机供油位置对爆震波峰值压力和频率的影响
Study on the PAPR of OFDM in Power Line Communication;
电力线OFDM通信中的峰均值比压缩研究
peak reverse voltage
反向峰值电压峰值反向电压
When compressive stress reaches zero, a critical value of the post-peak Poisson's ratio is achieved.
当压缩应力降至零时,峰后泊松比达到临界值。
circuit repetitive peak reverse voltage
电路反向重复峰值电压
circuit crest working reverse voltage
电路反向工作峰值电压
non repetitive peak reverse voltage
不重复峰值反向电压
non repetitive peak off state voltage
不可逆峰值断态电压
circuit repetitive peak off-state voltage
电路断态重复峰值电压
circuit crest working off-state voltage
电路断态工作峰值电压
To illustrate the effect of variable feed rate, the pressure and power draw changes with fluctuations in feed rate are calculated on the table below.
瞬间的压力变化及峰值出现是由熔融粘度瞬间变化导致的。
electricity supply peak meter
电力供应峰值电度表
circuit non-repetitive peak off-state voltage
电路断态不重复峰值电压
circuit non-repetitive peak reverse voltage
电路反向不重复峰值电压
The Peak Pressure Formula for the Acoustic Effect of the Energy Charged Particles
高能荷电粒子声效应的声压峰值公式
Design of AC Voltage Peak Detection Instrument Based on Modbus-RTU
基于Modbus-RTU协议的交流电压峰值表设计
Development of Peak Voltage Survey Meter for Automobile Ignition Coil
汽车点火线圈峰值电压测量仪的研制
If the conical angle difference is too large, the anchorage length will minish and the contact stress of CFRP bars will increase.
锚具长度越长,对碳筋的受力越有利,碳筋所受接触压应力的峰值也越小;