在建立牙轮钻头与井底岩石互作用模型的基础之上，建立了基于钻柱和岩石互作用下的牙轮钻头横向振动动力学模型。
On the basis of the interaction model between formation and rock bit, a lateral vibration dynamic model of the rock bit was established under the interaction between drilling string and rocks.
与传统打桩锤相比较具有噪声小、无污染、振动小、打击能量高等优点，符合环保要求，并具有良好的动力学特性。
Compared with normal hammers, it has a lot of advantages, such as lower noise, no exhaust gas, less vibration, high piling energy and better dynamics characteristics.
为了实现依据钻柱动力学的井眼轨迹控制，应特别重视钻柱振动特性与钻头受力状况的相互影响。
Finally, in order to control the well path by dynamics, great attention should be paid to the interaction between bit and drill string.
振动信号采集与分析技术是机械动力学和电子技术相结合的一门崭新的学科，是机械动力学工程应用的一个极为普遍的方面。
Vibration measurement and analysis technology is important branch of mechanical dynamics, and it is the universal aspect of the application of the mechanical dynamic engineering.
建立了飞机在随机跑道激励下，考虑机身俯仰运动与弹性振动的非线性随机动力学模型。
A nonlinear stochastic dynamic model is established which takes into consideration aircraft body pitch movements and the elastic vibration excited by the random runway.
论述了螺旋锥齿轮动力学研究的三种主要方法，即加载接触分析（LTCA）、解多维非线性方程组的方法，以及加载接触分析与周向振动模型结合的仿真分析方法。
The first method was loaded tooth contact analysis(LTCA), the second method was to solve nonlinear dynamics equation and the third method is to integrate torsional vibration model with LTCA.
滚动振动试验台在测试机车车辆动力学性能时，轨道轮与实际线路的差异会造成测试结果出现偏差。
In testing the dynamics performance of locomotives and rolling stock on the roller testing rig, the difference between the track wheel and the actual track may cause deviation of the test results.
分析了偏心链轮传动机构的运动学与动力学特性，确定了偏心链轮的振动方程、速度与加速度计算方程和从动轮的运动规律。
This article analyzed the kinematic and dynamic characteristics of cam chain wheel gearing, and put forward the vibrancy equation, speed equation and acceleration equation of cam chain wheel.
周期运动的稳定性与分叉研究可以为冲击振动落砂机的动力学优化设计提供理论依据。
The system parameters of shaker may be optimized by studying of stability and bifurcation of periodic impact motion of shaker.
将机械动力学与有限元分析方法相结合，建立了机构动平衡实验台振动测量的仿真方法。
Let the mechanical dynamics be combined with the method of finite element analysis to establish the simulation method of vibration measurement of dynamics balancing test-bed of mechanism.
太阳帆航天器动力学建模与求解是姿态控制与结构振动抑制的基础，具有重要的理论与工程意义。
Solar sail spacecraft dynamic modeling and solving are the basis of attitude control and structural vibration suppression, and they are of important theoretical and engineering significance.
滚动振动试验台在测试机车车辆动力学性能时，轨道轮与实际线路的差异会造成测试结果出现偏差。
The stability of SY97804 testing railway vehicle tested on the roller testing rig in the National Traction Power Laboratory is presented in detail, and the testing method is discussed.
滚动振动试验台在测试机车车辆动力学性能时，轨道轮与实际线路的差异会造成测试结果出现偏差。
The stability of SY97804 testing railway vehicle tested on the roller testing rig in the National Traction Power Laboratory is presented in detail, and the testing method is discussed.
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