Dynamic vibration equation of drilling string is established based on the theory of dynamics.
根据动力学理论建立钻柱动力学振动方程。
For revealing the dynamic behavior of the sod-nonlinear structure interaction system, the vibration equation of interaction system is analyzed using modern dynamic theory.
为了揭示地基-非线性结构相互作用体系的动力行为，采用现代动力理论对体系的振动方程进行了定性分析。
In consideration of the effect of liquid dynamic pressure on the tubing string vertical vibration, the differential equation and frequency equation for describing the vibration are set up.
考虑液动压力对油管柱纵向振动的影响，建立了油管柱纵向振动微分方程，并给出了这种情况下油管柱纵向振动的频率方程。
The nonlinear dynamic equation of free vibration to a circular plate for various boundary conditions, with the geometric nonlinear effects taken into account.
计及几何非线性，在各种板边条件下，建立圆板自由振动的非线性动力学方程。
Based on bond graph theory, the bond model of a road smoothness measuring equipment vibration has been set up, and the state equation and the dynamic simulation program established.
应用键合图理论建立了路面平整度仪振动系统的键合图模型，并推导出状态方程，编制了动态仿真程序。
Considering damping and complicated boundary conditions for the valve support movement, the dynamic equation of the valve vibration of engine is found.
建立发动机气门振动的运动微分方程，该模型杆端作支承运动，考虑阻尼和较复杂的边界条件。
According to the dynamic equation of the BVA-Structure systems, the vibration control effect of the BVA is studied in time domain.
根据结构—BVA体系风振控制的动力方程，在时域范围内考察了BVA的减振效果。
The solution of the blade forced vibration equation is investigated, so that the pheNomena appeared in the tests such as dynamic response of the blade and beat can be well explained.
还研究了工作叶片强迫振动方程的解，用它阐明了试验中出现的叶片动态响应和拍振等现象。
The natural frequencies, the equation of motion and the node of vibration are discussed for the vibration system of a cradle dynamic balancing machine.
本文讨论了框架式动平衡机振动系统的自然频率运动方程、振动中心等问题；
A 4d dynamic model has been established for the vehicle suspension system. No-linear random vibration theory is used to discuss how to solve this equation by FPK based on filtered white noise input.
建立了四自由度车辆悬挂系统的动力学模型，并应用非线性随机振动理论，在对模型输入进行过滤白噪声简化的基础上，探讨了用FPK法解方程的可能途径。
A 4d dynamic model has been established for the vehicle suspension system. No-linear random vibration theory is used to discuss how to solve this equation by FPK based on filtered white noise input.
建立了四自由度车辆悬挂系统的动力学模型，并应用非线性随机振动理论，在对模型输入进行过滤白噪声简化的基础上，探讨了用FPK法解方程的可能途径。
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