用非线性振动方程描述了球摆在 z 方向上的运动。
The motion of spherical pendulum in z-direction is described by nonlinear oscillation equation.
球面摆铅直方向的运动由一非线性振动方程描述。
The motion of spherical pendulum in z direction is described by nonlinear oscillation equation.
应用何吉欢的变分迭代算法，求解得到了一类的强非线性振动方程。
The variational iteration method proposed by Ji-huan he was applied to a kind of strongly nonlinear oscillators.
由伽辽金方法得到了弹性直杆热胀冷缩状态下受均布简谐激励的非线性振动方程。
The nonlinear vibration equation of the elastic straight bar under thermal expansion and harmonic excitation is obtained by Galerkin principle.
应用达朗贝尔原理建立了考虑几何非线性的方形张拉膜结构的离散非线性振动方程组；
D′Alembert′s principle is used to derive an ordinary differential equation set for free vibration of a discretized square tensioned membrane with geometric nonlinearity.
建立了具有1 016个自由度的非线性振动方程，并基于固定界面模态综合法降维至34个自由度。
A nonlinear vibration equation with 1 016 degrees of freedom is formulated and the degrees of freedom are reduced to 34 based on fixed interface modal synthesis method.
阐述利用最新提出的同伦分析方法求解有正阻尼的强非线性振动方程，得到了该方程的六阶近似解析解。
In this paper, the sixth-order approximate analytical solutions of the strong nonlinear oscillation with positive damping are obtained by using newly developed homotopy analysis method.
文中给出了这一非线性振动模型的微分方程，并用奇异摄动法求得了渐近解。
This paper also gives the differential equation of the nonlinear vibration model, and obtains its asymptotic solution by means of singular perturbation methods.
本文针对后梁系统单自由度运动方程的非线性振动分析对工程设计、织造工艺改善有一定理论意义；
The nonlinear dynamic analysis to SDOF function of the back-rest system can be benefit for engineering design and improvement of weaving technology.
本文针对后梁系统单自由度运动方程的非线性振动分析对工程设计、织造工艺改善有一定理论意义；
The nonlinear dynamic analysis to SDOF function of the back-rest system can be benefit for engineering design and improvement of weaving technology.
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