| 1. | We outline the method here only for the first and second problems of elastodynamics .
在这里我们只针对第一类和第二类弹性动力学问题来概述这种方法。 |
| 2. | Abstract : the nonlinear finite element dynamic simulation model for an oscillation mechanism with 4 - eccentric axis for continuous casting machine is established by means of the theory of kineto - elastodynamics
文摘:根据运动弹性动力学的理论方法，建立了连铸机四偏心式振动机构非线性有限元动力学仿真模型。 |
| 3. | Based on the previous work , the equations of motion and elastodynamics are changed . a high - order staggered velocity - stress finite - difference formula of the acoustic field in borehole are set up in cylindrical coordinate , and the corresponding code is accomplished
本文在弹性波动力学的基础上，将运动方程和本构方程作适当变形，采用交错网格技术建立了井孔波动方程在柱坐标系下的速度?应力高阶有限筹分公式，并编制了相关计算程序。 |
| 4. | This paper , from the angle of elastodynamics , studied the dynamic performance of the belt conveyor system by the action of transient load at acceleration and deceleration and prohided the proper acceleration and deceleration curves of the beh conveyor , which can be used in the engineering design
从弹性动力学角度出发，研究了带式输送机在不同的加、减速度冲击作用下和系统的动态特性，并提出合理的带式输送机的加、减速度曲线，可供工程设计采用。 |
| 5. | On the basis of kineto - elastodynamics ( ked ) , modern control theory and neural networks ( nn ) , this dissertation studies , in a systematic way , the theory and the methods of the nn based active vibration control of flexible linkage mechanisms whose flexible links are incorporated with piezoceramic actuators and strain gauge sensors
本文首次将机构运动弹性动力学、现代控制论及神经网络理论相结合,以具有压电陶瓷作动器与电阻应变计传感器的平面弹性连杆机构为研究对象,系统地开展了基于神经网络的弹性连杆机构振动主动控制的理论、方法与实验研究。 |
| 6. | In this thesis , by means of the lagrange function , the finite element dynamic equations of the beam element are deduced . then all the element dynamic equations are assembled into the system dynamic equation through using the kineto - elastodynamics theory . the dissipation force derived from joint damping is applied as excitation force of the linkage system
本文的主要内容如下：以平面弹性四连杆机构为研究对象，运用ked ( kineto - elastodynamics )方法推导出了连杆机构的系统动力学方程；在此基础上，将运动副阻尼等效为粘性阻尼，导出了包含运动副等效粘性阻尼系数的系统动力学方程。 |
| 7. | The study of consolidation of layered saturated soils under variable loading is an important issue to geotechnical engineering . it is also of great value to the development of the elastodynamics and is very helpful to the analysis and design of foundations subjected to dynamic loads , such as vibrating machines and seismic waves . some aspects about this problem are studied in this dissertation
变荷载下成层地基的固结问题一直是岩土工程界不论在理论方面还是实际方面的重要课题，它不仅对于弹性动力学的发展有着重要的学术价值，而且对机器基础及地震荷载作用下基础的分析和设计具有重要的指导意义。 |
| 8. | The study of dynamic interactions of foundations and grounds on half space has been the focus on the mechanics and engineering fields . it is of great value to the development of the elastodynamics and is very helpful to the analysis and design of foundations subjected to dynamic loads , such as vibrating machines and seismic waves
半空间地基与基础的动力相互作用问题的研究一直受到力学界和工程界的关注，它不仅对于弹性动力学的发展有着重要的学术价值，而且对机器基础及地震荷载作用下基础的分析与设计具有重要的指导意义。 |
