Based on 3d axis - symmetrical soil model and the theory of saturated porous medium originally presented by biot , an integral pile and pile with variable impedance embedded in layered saturated soil are analytically studied in this dissertation 在这一背景下，本文考虑了饱和土的三维波动效应，采用解析方法对三维轴对称成层饱和土中完整桩及各类变阻抗桩的纵向耦合振动理论进行系统研究。
The coupling vibration between the vehicle and guideway sets a high standard for the guideway construction , which leads to high cost investment for the maglev system . this makes it a practical significant issue to do a thorough research of the vibration 车轨耦合振动是导致磁浮线路标准高、投入大的主要原因之一,对车轨耦合振动特性进行深入研究对磁浮交通技术的推广应用有着重要意义。
The convert and evolution course of periodical response , quasi - periodical response , double - periodical bifurcation , chaos of the system response is analyzed . ( 3 ) . it is deduced that the general differential equation of bending - torsional - pendular coupling vibration about rotor with the gyroscopic moment ( 3 )推导了一般意义下,考虑陀螺力矩的单盘转子弯扭摆耦合振动非线性方程,基于该方程,推出了不平衡转子和碰摩转子的非线性弯扭摆耦合振动方程。
The maglev train do not contact with guide way , and generally trestles are used as levitation guide way , so the dynamics character of maglev is more complex than that of traditional wheel - rail . the main problems include stability of suspension and guidance control and coupled vibration of vehicle - rail 因为磁悬浮列车与轨道无接触，而轨道又往往采用高架桥梁，所以其动力学特性比起传统轮轨列车要复杂得多，主要有悬浮、导向稳定性和车轨耦合振动等问题。
Subsequently , the special elastic coupling manner of the high - speed maglev is considered , and the restriction between the coupling factor of the single magnet module and other system parameters is studied . the influence of the coupling factor on the vehicle and guideway coupling vibration is also valued 在此基础上研究二维电磁铁模块系统的弹性结构耦合因素,分析渐近稳定条件下耦合系数与其它系统参数的制约关系,考察耦合参数对车轨耦合振动幅频特性的影响。
Using vogel ' s wear index as the rail side wear index , the paper analyzes the side wear variations of rail head when the parameters in the wheel / rail system vary , analyzes the influences of track irregularity on rail uneven wear on gauge corner emphatically . this paper analyzes the rail side wear dates measured by track division of shan hai guan since 1990 , then gains the relationship between side wear and traffic volume and sums up the characteristics and regularities in the formation and development of side wear . in the end , some measures for regarding the side wear on curves are put forward 从轮轨摩擦、轮轨接触几何关系、轮轨接触应力和轮轨蠕滑等方面对钢轨侧面磨耗机理进行了探讨，从轨道几何参数、机车车辆运营条件等方面对钢轨侧面磨耗的影响因素进行了重点分析和总结；应用轮轨系统动力学，建立了轮轨空间耦合振动时变模型，采用vogel侧磨指数作为钢轨侧磨指标，系统分析了轮轨参数变化的情况下，轨头侧面磨耗的变化规律，重点分析了轨道不平顺对钢轨不均匀侧磨的影响；对山海关工务段1990年以后现场测得的曲线钢轨侧磨数据进行了分析，通过拟合得到了钢轨侧磨量与运量的关系曲线，并总结了曲线上股钢轨侧面磨耗的特征和发生、发展规律；最后提出了一些减缓曲线钢轨侧面磨耗的措施。
Thirdly , a simplified model neglecting the radial displacement of saturated soil is established and an analytical solution for vertical vibration of the soil - pile system is obtained . by comparison the solution with available viscoelastic solution , the differences are illustrated as well as its applications 3 、建立了饱和土中忽略径向运动影响的简化模型，得到简化模型下桩土纵向耦合振动解析解，并与考虑径向运动影响的模型及胡昌斌的模型加以比较，分析了几种模型的异同及适用性。
Hence , they that flow field calculation and dynamical computation of fluid - solid coupling dynamic characteristics are carried out to search flow law in the hydraulic turbine , optimize the design of scroll casing , guide vane , blade and draft tube , and they can apply useful to the monitoring and fault diagnosis system of hydroelectric set as well 因此，为探求水轮机内部的流动规律，优化水轮机设计，为水轮机的安全稳定性运行和机组的故障诊断提供帮助。对导叶内部的流动进行流场计算和流固耦合振动特性的动力计算就显得十分必要。
This paper shows that analysis system procedure on the coupling vibration of vehicle - bridge can alone research vehicle vibration , bridge vibration and can still research vehicle - bridge on coupling vibration . moreover , from the external data document to calculation , then to the result output can proceed together . the interface of procedure is amity , operation is simple and the function is strong 本文研究表明，车?桥耦合振动分析系统程序可以单独对车辆、桥梁进行振动分析，还可以对车?桥耦合振动系统进行分析，并且从外部数据文件，到计算求解，再到结果输出可一并进行，界面友好，操作简单，功能较强。
And , the foundation study of coupling of the power train and the chassis system in the paper . the stiffness of rubber mounts is formulated using fea , by analyzing the relations between the stiffness and all kind of factors of rubber mounts , the formula of the stiffness for a shortcut to engineering practice is composed on the two adopting uniform design theory , the stimulation and field testing are done based on the results by optimization design . , 同时探讨了动力总成与底盘系统的耦合振动特性,并在此基础上运用有限元( fea )的方法,求解橡胶悬置的刚度特性,分析了橡胶悬置各个因数对刚度影响的规律,采用均匀设计的方法拟合了悬置刚度关于各个参数的公式,为工程实际应用提供了快捷的设计方法。
