压缩波

准饱和土是天然土体中比较常见的一种形式，与饱和土相同，其内可传播三种体波：剪切波、快压缩波（P1波）和慢压缩波（P2波）。

Nearly saturated soil is one of the usual kinds of natural soils , there are three waves : shear wave , fast compressional wave ( P_1 wave ) and slow compressional wave ( P_2 wave ) that can propagate in it .

随着饱和度的减小，瑞利波能量中压缩波分量会有少量增加；

The compressional wave components of Rayleigh wave energy would slightly increase with the decreasing saturation .

另外两种，P或者“压缩波”以及S“剧烈波”，穿透地球内部。

The other two , Primary ( P ) or compression waves and Secondary ( S ) or shear waves , penetrate the interior of the Earth .

一维的纵向压缩波在同质的粘弹性介质中传播时，材料的粘弹性特性主要通过纵向波的传播速度c（w）和衰减系数a（w）两项来定义。

Any homogeneous viscoelastic medium subjected to one-dimensional tension and compression can be characterized in terms of the phase velocity c ( w ) and the attenuation coefficient deduce the complex modulus and the other equivalent viscoelastic functions .

u-w方程的有限差分法分析饱和土的两个压缩波

U-w Finite Differences Method to Analyse Two Compression Waves of Saturated Soil

以活塞撞击HMX多孔床为例，将数值结果、实验结果以及稳态分析结果进行了比较，证明模型能很好的预测稳态压缩波特性。

As an example , HMX porous bed is studied for various piston-impact conditions and compared to experimental data and steady-state wave analysis . The model predicts reasonably well the observed steady compaction wave characteristics .

Courant和Landau等学者曾定性地断言，对于简单压缩波其特征线会相互相交，因而会使解出现多值性，由此产生了弱解理论。

Courant and Landau qualitatively affirmed that for simple compression wave the characteristic lines would intersect each other so that many-valuedness would happen and the theory of weak solution was invented . In t.

在2.5～3.0m之间存在一个激波完全衰减成为压缩波的水雾区临界长度。

It can be predicated that a critical length of spray district , 2.5 ~ 3.0 m or so , beyond which shock wave will attenuate to be compression wave .

从一维非定常守恒方程出发，本文用RichtmyerLaxWendroff格式研究了压缩波、稀疏波、燃烧速率、火焰熄灭和管道长度对管内运动火焰生成压力波的影响。

One dimensional unsteady equations and Richtmyer Lax Wendroff scheme were used to study the influences of compression and rarefaction waves , combustion speed , flame out and length of tube to the pressure waves generated by steady propagating flames .

实验结果表明：在水量均为70L的情况下，分散式布置时激波在通过第一个水槽位置后即开始发生衰减，并完全衰减成为压缩波，火焰熄灭在水雾作用区，爆炸被完全抑制住；

The results indicated that shockwave began to attenuate immediately after it reached the first distribution trough and became a compression wave eventually , meanwhile , the flame is extinguished in water spray district , therefore , explosion is completely quenched .

将相关论文[1]中得到的饱和土一维简谐响应解析解，应用到饱和土中两类压缩波的独立作用、饱和土中波的传播速度、u-p方程的适用范围等研究中。

The analytical solution of 1-D harmonic response in saturated soil , derived in the companion paper [ 1 ] , is used in the research of individual contributions of two compression waves , wave velocity and the applicable scale of u-p formulation in saturated soil .

在常规涡轮中，这组压缩波将不会出现；

But in conventional turbine , the SSPW will not create .

高速列车突入隧道引起的压缩波的理论研究

Theoretical Investigation of Compression Wave Induced by High-Speed Train Entering Tunnel

波阻抗较大的材料，有利于压缩波的透射。

The biggish wave impedance was better for the compress wave transmission .

对简单压缩波定性理论的质疑

Raising Doubt About the Qualitative Theory of Simple Compression Wave

滑动界面球形夹杂对平面压缩波的散射

Scattering of Plane Compressional Waves by a Sliding Spherical Inhomogeneity INTERFACE FRACTURE

压缩波在饱和软土中的传播试验

Test of compressive wave propagating in soft saturated soil

饱和土中任意形状衬砌对稳态压缩波的散射

Scattering around a liner of arbitrary shape in saturated soil under dilatational waves

通过数值计算，讨论了半空间准饱和土中压缩波、剪切波与瑞利波波速度的弥散特性以及位移情况。

Rayleigh wave dispersion characteristics and its displacement in a nearly soil are discussed .

（挤压后）断面减缩率压缩波在减速流中变陡。

A compression wave in decelerating flow steepens .

在两类压缩波的独立作用研究中，克服了以前文献中的数学不严密性。

Mathematical imprecision is overridden in the research of individual contributions of two compression waves .

饱和土动力反应中两类压缩波的独立作用分析

Analysis of individual contributions of two compression waves in dynamic response of saturated soil layer

一维应变弹塑性压缩波传播中由反向塑性变形引起的拉应力区

Tensile stress regions caused by reverse plastic deformation in one-dimensional strain elastic-plastic compressional wave propagation

隧道内浅支坑对初始压缩波波形变形影响初探

Investigation on Effect of Short Side Branch on Distortion of Waveform of Pressure Wave in Tunnel

通过气动声学的分析，其对环境的影响与破坏程度正比于压缩波压强梯度的最大值。

According to acoustic analysis , the influence is proportional to the maximum compression wave gradient .

本文运用数值方法对简化的二维轴对称列车模型进入隧道的过程进行了模拟，并对压缩波压强梯度进行了计算。

Consequently , we use the numerical method to simulate the process of train entering tunnel .

爆炸地震波经过冲击波、弹塑性波和弹性压缩波的发展过程。

The explosive seismic wave is developed from shock wave to plastic-elastic wave and into elastic wave .

高速列车进入隧道产生压缩波的数值模拟及试验研究

The Experiment and Numerical Simulation on the Pressure Produced by a High-Speed Train Entering into a Tunnel

在固体中有两类弹性波，一类是压缩波，另一类是横波。

There are two kinds of elastic waves in solids a compressional wave and a transverse wave .

在小扰动条件下，导出了粘滞流体的压缩波和切变波的波动方程，并求出了解析解。

It deduces the equations of pressure and shear waves for small disturbance and obtains the ana-lyrical solutions .