This Paper studies the propagating laws of blasting stress wave in the kelvin rock body, sets up numercal value calculating method of stress wave propagation, research makes clear that discontinuity of stress in the front of wave no exists, the propagation speed of lower stress is higher than that of higher stress, the rising time of stress wave is more and more, and the damping exponent has something to do with charge diameter because of viscosity influence.
本文从理论上研究了粘弹性岩体中爆炸应力波的传播规律，建立了粘弹性应力波传播的数值计算方法。研究表明，由于粘滞数应，应力波波阵面的不连续性已不复存在，低应力的传播速度高于高应力的传播速度，应力波的上升时间越来越大，且应力波的衰减指数与装药直径有关。
Rocks typically have several cracks and flaws, and for this reason the amplitude of the stress wave attenuates with propagation distance when the rock specimen is loaded under loads that are substantially lower than the yield point.
在冲击荷载下，即便是在作用荷载比较低的阶段，由于岩石内部自然缺陷的存在，应力波随着传播距离延伸，其幅值有较大的衰减。
Solid mechanics; stress wave load; elastic plastic fracture; dynamic fracture toughness; crack propagation velocity; arrest toughness
固体力学；应力波载荷；弹塑性断裂；动态断裂韧性；裂纹扩展速度；止裂韧性
Processing the signal of one sensor collecting on the different positions of water pipeline leakage using LabVIEW is researched in the thesis. A series of characteristic index are described to extract the information of stress wave in time domain and frequency domain. A back propagation neutral network with the input matrix composed of the characters of the stress is proposed to detect the leaks in the fluid pipelines and localize the leak.
在信号处理方面，对单传感器在泄漏管道不同位置拾取的泄漏信号应用美国国家仪器公司的虚拟仪器软件平台LabVIEW进行分析，并提取时域和频域信号特征指标构造神经网络输入矩阵，建立了能对管道泄漏状况进行分类的神经网络模型，以检测管道泄漏的发生并进行泄漏定位。
The propagation, termination, and mode of blasting cracks are presented. An accurate termination tenacity value is achieved; and preliminary cracks are extended rapidly under blasting stress wave.
确认了早期爆炸裂纹是在爆轰压力作用下产生快速扩展裂纹，裂纹尖端形成应力集中和积聚较大的应变能，爆炸裂纹中后期的焦散形式与一般动态焦散接近相同。
From the initial stress-phase velocity curves, one can determine the initial stress in the layer by means of the measurement of phase velocity of generalized Rayleigh wave propagation.
4在材料参数和薄膜厚度给定的情况下，可以通过测量相速度的变化，根据计算得到的基频相速度和初应力的关系曲线，确定覆盖层中初应力的大小。
The phase velocity equations of generalized Rayleigh wave propagation and the stress fields are obtained for electrical open and short cases on the free surface, respectively.
求得了压电层状结构中广义Rayleigh波传播时初应力与相速度的关系曲线，探讨了通过测定表声波的传播速度确定薄膜内初应力的基本途径。
In this paper, the dynamic behaviours of polymer-cement composite material are investigated, including the dynamic rigidity, internal frication and ratio of elastic energy to unelastic energy in hysteresis loop under vibration, the stress wave propagation and attenuation in this material, the impact toughness and abrasiveness.
本文研究了聚合物水泥复合材料的动力性能，其中包括动力刚度、振动状态下的内耗及振动滞后曲线中的弹性与非弹性应变能之比、应力波的传播与衰耗、冲击韧性和耐磨硬度等。
Multiple elastoplastic impacts phenomenon, concerning the dynamic mechanical properties of materials, elastoplastic stress wave propagation and plastic dynamic response of structures, has been focused by many researchers recently.
多次弹塑性撞击问题，涉及材料的动态力学性能、弹塑性应力波传播以及结构的塑性动力响应，成为近年来的研究热点之一。
First, systematic study on propagation, reflection and interaction of axial stress wave is made to deduce the calculation equation for axial elastic and plastic stress wave, which fit for analysis of impact buckling of axial compression member.
本文首先对轴向应力波在构件中的传播、反射及相互作用进行系统分析，推导出适合轴心受压构件冲击屈曲分析的轴向弹、塑性应力波计算公式。
First, physical and mechanical characteristics of coal and ground pressure on the coal wall are studied. These features are used on the impact cutting coal. Then, the mechanical peculiarity on the impact cutting process of the coal are analyzed by mechanics of elasticity and dynamics of impact. The model of impact fracture is set up, and the mechanism forming compaction core is discussed. Propagation law of stress wave in the coal, reflection and refraction law at stress wave reaching interface and interference law are studied. Finally, stress field in the coal is simulated by ANSYS/LS-DYNA when a blade impact coal, and two kinds of the result of numerical simulation and theoretical analysis are compared. The coal will break at the place of drawing stress concentrated when the quality and velocity are certain.
首先，分析了煤岩的物理结构组成、煤体的机械力学性质和工作面煤壁所处的地应力环境，冲击破煤就是充分利用了煤岩的上述性质；其次，运用弹性力学和冲击动力学理论对煤岩冲击破碎过程进行了力学行为分析，建立了冲击破碎过程的力学模型，阐述了压实核形成、破坏机理，分析了煤体内部应力波的产生、传播及在交界面或拐角的反射、折射效应与会聚破坏作用；最后，运用ANSYS/LS-DYNA程序对刀齿冲击煤体破碎过程进行了数值模拟，并将数值模拟结果与理论分析进行了对比，结果表明：在质量和冲击速度一定的条件下，煤体内部产生了拉应力集中，煤体很可能在这些位置断裂破坏。
Studies on the mechanisms of stress wave propagation in the chest subjected to impact and lung injuries.
家兔神经撞击伤后生长相关蛋白的变化及丙酸睾丸酮治疗的影响。
Based on the analysis of interactions between stress waves and open joints, the analytic model of stress wave propagation across open joints was established.
摘 要：通过对应力波与张开节理相互作用过程的分析，建立应力波在张开节理处传播的解析模型。
That rock damage and defect will result in stress concentration or amplification. The theory on primary crack extension at distant place of blasting stress wave has been elaborated, and the model for estimating the crack propagation length which is based on rock damage has been presented.
提出岩石损伤与缺陷的存在，会产生应力集中或放大效应的依据，并阐述爆破应力波作用下远区原生裂纹扩展的理论分析，给出了基于岩石损伤的裂纹扩展长度估算模型。
Tensile stress regions caused by reverse plastic deformation in one-dimensional strain elastic-plastic compressional wave propagation
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
The results show an apparent decay in the Hugoniot elastic limit with increasing propagation distance, as well as a stress relaxation behind the elastic wave front, and nearly 44% loss of Hugoniot elastic limit was observed in the present sample thickness range.
实验结果显示：Hugoniot弹性极限随着传播距离呈指数衰减，在所研究的样品厚度范围内，Hugoniot弹性极限减小了44%；
Stress wave propagation equations that incident wave and reflection wave are condition vectors are derived from three discrete forms as well as the characteristic matrix of the force and the velocity.
推导了以顺波、逆波为状态向量的应力波传播方程和杆形部件的作用力、速度传播的特征矩阵；
At last, researching the stress wave propagation velocity in burned-cut blasting and the process which rock throw out the hold, the author deduced to the theoretical formula of differential delay time between different breaking-in hole.
再次，研究了直线掏槽爆破中应力波传播速度和岩渣的抛出过程得出各掏槽孔之间微差爆破时间间隔的理论设计计算公式。
Through an example of elastic stress-wave propagation through a slender rod, the high accuracy and computation efficiency of the multiscale numerical method of time and space were validated.
通过弹性应力波在细长杆中传播的算例，验证了该时空多尺度数值计算方法具有较高的准确性和计算效率。
For the local dynamic stability of structure, the propagation of stress wave is an important factor.
对于结构局部的动力稳定性，应力波的传播是一个重要因素。