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- MECHANISM OF IMPACT STRESS WAVE SPREAD IN RESHAPING OF DESTROYED CASING WELL 套损井整形冲击应力波的传播机理研究
- impact stress wave 冲击应力波
- A mechanical model of impact truing was set up based on the theory of impact dynamics and stress wave spreading, and stress distribution was described accurately. 以冲击动力学和应力波传播理论为基础,建立了冲击整形的力学模型,较为准确地描述了水泥环中的应力分布。
- Transmission of stress wave through the mechanical impact system is studied with the aim to provide an approach to synthesize all parts with the same wave transmissivity as a given part. 研究了应力波在冲击机械系统中的传播规律,提出了给定部件等透射率的部件综合方法。
- If this happened at the surface of the leaves, the metal materials are very high due to repeated impact stress has been eroded, so called cavitation. 这种现象如果发生在叶片的表面,则金属材料因反复受到很高的冲击应力而被侵蚀,所以叫做气蚀。
- 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。
- It is difficult to measure dynamically impact stress and impact strain of centrifugal attritor directly by using existing experiment equipment. 研制了一种旋流旋转离心装置,可使离心力场的强度大大提高、分离效果显著改善。
- 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。
- 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;
- 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。
- 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。
- 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。
- Scientists conducted a research on impact stress in rocks impacted by water jets. 科学家们研究了向岩石喷射水时岩石产生的冲击应力。
- 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。
- The process problems of composite structures using interference fit technology can be solved by use of Stress Wave Riveting (SWR). 分析了复合材料结构采用干涉配合技术存在的工艺困难,利用应力波铆接设备对碳纤维复合材料进行了干涉配合铆接试验,并对铆接质量进行了检测分析。
- It is the macro effect of accumulative micro fracture in all period of time that spallation failure is induced by reflection of stress wave emerges. 应力波反射诱发层裂过程的发生,是各个时刻不同加载条件下微破裂累积的宏观体现。
- The control equation of stress wave propagation in timbers is given in cylindrical polar coordinates,and the governing equations of the three comp... 用云杉作为一个实例;分析了其弹性常数;讨论了在对称和非对称情况下应力波的传播情况.
- The effect of growth rate and latewood percent on stress wave modulus of elasticity was more obvious than that on vibration modulus of elasticity. 应力波测试的动弹性模量和生长率及晚材率关系密切,超过振动测试的弹性模量和生长率及晚材率关系。
- This paper analyses the producing causes of stress wave,introduces the vibrating technique and hazard of stress wave,puts forward the solution mode. 分析输送带中张力波产生的原因,介绍张力波振荡的机理,指出振荡的危害性,提出解决的方法。