propagation pressure

Study of Propagation Pattern of Pressure Waves Produced by Magnetically Levitated Train Passing a Tunnel

磁悬浮列车穿越隧道引起的压力波传播规律研究

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And the analysis of the test data is as following: ① Influence of concentration impacting on peak pressure is analyzed. And peak pressure has a cubic function with propagation distance with same test point distance.

分析试验数据认为：①浓度的改变对压力峰值的影响是比较大的，当测点距离一定时，压力峰值与浓度成二次函数关系。

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According to the Newton's second law of motion, the law of conservation of mass, and Bingham plastic flow equation of slurry, as well as under top cement pulsation, the mathematical models of one dimensional pressure pulse propagation downwards in the cement column was established.

文中根据牛顿定律、质量守恒定律及水泥浆的宾汉塑性流变性，在顶部水泥脉冲振动作用下，建立了水泥浆中，一维压力传播的波动方程的数学模型。

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Methods The physical parameters of blast wave were measured by PCB pressure transducers ( USA) during underwater and air explosions of 200g, 500g and 1000g TNT respectively. Consequently, the propagation speed, peak overpressure value, positive duration and impulse of blast wave were analyzed.

方法分别用200、500和1000g TNT进行水下和空气中爆炸，用美国PCB公司生产的压力传感器测定冲击波物理参数，分析冲击波的传播速度、超压峰值、正向持续时间和冲量。

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The modified tensile stress crack propagation criterion and influence of cranny hydraulic pressure on crack propagation

修正的拉应力裂纹扩展准则及裂隙水压对裂纹扩展的影响

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