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- The only strain is a shear strain and the dilatation is zero, these waves are called shear waves. 唯一的应变是剪应变而没有膨胀,这种波叫剪切波。
- Shear waves of two vibration modes can be produced in laboratories: the shear vibration and the torsion vibration. 摘要实验室可以产生两种振动模式的横波,一种是剪切振动,另一种是扭转振动。
- The S-waves have the kinematics of pure shear waves,thus we can pick their first arrivals,calculate their interval velocities,and further compu. 实验发现:裂缝密度较高时,可以观测到明显的横波分裂现象;而裂缝密度较低时,仅能观测到微小的速度异常。
- The warning system works by detecting primary waves, which spread from the epicenter of a quake and travel faster than the destructive shear waves. 预警系统的工作原理是探测主要的地震波,主震波由震中传出比破坏性的波传播速度快。
- Shear wave logging tools use dipole radiation in the borehole to generate flexural waves in formation. 针对高频散的挠曲波,将基于模拟退火的优化方法引入阵列偶极子测井资料处理中,以得到横波时差。
- Shear wave: The vibration direction of the particle is perpendicular with the spread direction of the wave. 横波:质点的振动方向跟波的传播方向垂直的波。
- AVO phenomenon relating to petrophysical parameters can be seen in both compressional wave and shear wave. 地震反射振幅随炮检距变化的规律不仅纵波存在,横波同样也具有与物性参数有关的AVO特征。
- Principle of saturated sand cyclic liquefaction evaluation by shear wave velocity was presented. 摘要介绍了应用剪切波速判别饱和砂土振动液化的原理;
- At the balanceable place the incoming wave is inputted vertically as shear wave in the bottom of the mode. 框架结构在静力作用下产生位移,在静平衡位置再输入地震波。
- Unfortunately the shock conditions for accompanying longitudinal waves cannot be inferred at the outset without having detailed information about the shear wave. 很可惜,对伴随的纵波,冲击波条件却不能从一开始就在没有剪切波的详尽知识的情况下推测得出。
- We can compute to the value of the compressionalwave and the shear wave from the theoretical model Biot-Geerstma-Smith equations. 利用理论模型 Biot-Geerstma-Smith 方程分别算出纵波速度和横波速度。
- As the speed of the shear wave of styrene-butadiene rubber (SBR) is lower than other rubbers, it is more suitable for the acoustic baffle material. 虽然SBR橡胶的特性阻抗与海水接近,但经过结构设计,通过将橡胶的压缩形变转换为剪切形变,从而有效降低结构件声速,可以达到与海水失配的目的。
- In thoery, it is feasible to obtain the shear wave of the formation by dipole acoustic imaging well logging through the casing. 过套管利用偶极子声波成像测量获得地层横波资料,在理论上讲是可行的。
- Uphole shooting is a mostly direct and effective method.Similarly, shear wave uphole shooting can be conducted using shear wave source. 微测井一直是解决纵波勘探表层问题最直接最有效的表层调查方法,同样利用横波震源,也可以进行横波微测井采集。
- Based on the shear wave formulation,this paper presents a new method to calculate horizontal seismic responses of multistory shear type structures. 基于结构侧向位移的剪切波动方程,提出分析多层剪切型结构水平地震反应的新方法。
- The compressional and shear wave travel time generally incease with hydration time and reach to steady situation gradually. 泥页岩纵横波时差随着水化时间的延长呈总体增大的趋势并逐步趋于稳定。
- By increasing the number of the elements, the amplitudes of compressional wave and shear wave are enhanced in the generation condition. 随着相控线阵工作阵元个数的增加,在近似满足同相位叠加时,纵、横波振幅得到明显的加强。
- The paper also describes the propagation of elastic waves in EDA medium by using the numerical result of finite difference, and indicates shear wave splitting . 文中利用有限差分数值计算的结果展示了弹性波在EDA介质中的传播特征,揭示了横波分裂现象及几种弹性参数的地质意义。
- An acoustic attenuation method is given for [110]-[001] acoustic shear wave TeO_2acousto-optic deflectors. The experiment shows that it is a feasible method. 文章讨论了一种适用于[110]-[001]型TeO_2横波声光偏转器的吸声方法
- Classification of engineering site sort, reassessment of saturated sandy soil liquefaction and subsoil earthquake response analysis all depend on subsoil shear wave velocity. 建筑场地类别划分、地基饱和砂土液化判别、地震反应分析等都依赖于剪切波速,由于其重要性,对它的测定技术和精确程度应重点研究。