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- Keywords SHPB experimental technique;numerical simulation;stress wave dispersion;The stress uneven in specimen;Pulse shaper;The defect of the specimen; SHPB试验装置;数值模拟;波传播弥散;试样早期应力均匀;波形整形器;试样初始缺陷;
- stress wave dispersion 应力波色散
- And it points out direct method and unbind-coupling method solve the problem on stress uniformity, flexible shapers minish wave dispersion , mathematics solve contact problems between ends. 提出了直接法和数据解耦的方法处理应力不均匀问题、使用软介质的方法处理大直径杆的弥散效应问题、用数学计算的方法处理试件端面摩擦效应的问题.
- The evaluation of Rayleigh wave dispersion characteristic is the key step for detecting S-wave velocity structure. 摘要瑞利波频散特性测试是波速结构的面波探测方法中的关键环节。
- Longitudinal ultrasonic guide wave dispersion equation of inviscid liquid-filled pipe is analyzed theoretically. 从理论上得到了充非粘性液体管道中纵向超声导波的频散方程。
- Objective To study the relation between P wave dispersion, P wave width and paroxysmal atrial fibrillation. 目的研究心电图P波离散度、P波宽度与阵发性心房纤颤的关系。
- Conclusion P wave maximum width or P wave dispersion is a dependable sign to predic... 结论P波离散度、P波最大宽度为一种预测阵发性心房纤颤的可靠指标。
- The paper analyses the stress wave propagating in a variable section bar using HONDO finite element computer program . 利用HONDO有限元程序对应力波在变截面杆中的传播进行了分析。
- Acoustic emission (AE) is stress wave produced when the materials are distorted, or under the outside load. 众所周知,声发射(AE)是材料在受到形变或外力作用时,迅速释放能量而产生的瞬态应力波,是进行结构诊断的重要依据。
- Meanwhile, some noninvasive surface EKG parameters such as P wave dispersion show promising application in the field of predicting AF. 一些无创的体表心电图指标如P波离散度等被认为能预测房颤的发生。
- The mechanism of spallation is analyzed as a result of the interaction of the unloading wave and reflected stress wave. 分析了层裂机制，得出靶材是在卸载波及被反射的压力波的共同作用下发生层裂;
- A lot of numerical simulations indicate that both SVD and LSQRD are very effectively applied to inversion of surface wave dispersion. 大量的数值模拟表明，SVD和LSQRD在面波频散网格反演两步法中的应用效果都很好。
- The paper analyzes the reasons for emulsion explosive's passivation by the action of blasting stress wave. 文中分析了爆炸应力波作用致使乳化炸药钝化的原因。
- Abstract Seismic wave dispersion and dissipation distort the shape of the wavelet and attenuate the energy of seismic reflections. 摘要 地层的吸收与衰减效应使地震波的振幅被衰减，相位被改变。
- It is shown that the irregularity of the joint surface apparently affects the stress wave transmission. 研究结果表明：节理面不规则结构明显地影响应力波的传播性质。
- This paper presents a signal de-noising method using wavelet analysis in stress wave detection. 介绍了一种适合于管道应力波检测的基于小波变换的去噪方法。
- In this study, Love wave dispersion data of 117 selected wave paths crossing the Pacific ocean basin are determined by applying the MF-FTAN technique to SRO/GDSN long period data. 应用现代适配滤波频时分析技术对SRO/GDSN长周期面波记录进行处理,获得穿过太平洋盆地的117条波路径的勒夫波频散数据。
- The interreaction between the weight hammer and the explosive sample is analysed making use of the stress wave theory. 从刚体动力学观点将这种相互作用简化为二阶系统,可得到一组关于应力、应力率和应力脉冲宽度的表达式。
- Dogan A,Ozaydin M,Nazli C,et al.Does impaired left ventricular relax-ation affect P wave dispersion in patients with hypertension.Ann Noninva-sire Electrocardiol,2003,8:189. 中华医学会心血管病学分会.;慢性心力衰竭诊断治疗指南
- Structures, cutting mechanism and stress wave theory of the tunneller a re presented and analyzed. 文章对这种掘进机的结构、截割机理及应力波理论进行了介绍和分析。
