This paper studies the nonlinear motion law of a simple pendulum with damping factor.
本文研究具有阻尼因素的单摆非线性运动规律。
Methods: A brain concussion was produced in rats using a simple pendulum device model.
方法：应用自制单摆式闭合性机械打击装置建立脑震荡大鼠模型；
A more precision formula for the period of a simple pendulum is obtained by using the method of variable be partly fixed.
利用“局部常化”方法给出了一个精度较高的单摆周期公式。
This is a simple pendulum model of the bifurcation behavior of the bifurcation diagram, is my collection, for your reference.
这是一个单摆模型的分岔行为的分岔图，是我珍藏的，供大家参考。
Do the tangential force, the mormal force, the resultant force and their directions during oscillation of a simple pendulum change?
那么单摆在振动过程中，切向力、法向力及合力的大小和方向是否在变化?。
Analytical approximate periods and periodic solutions to large amplitude oscillation of a simple pendulum are constructed using a new method.
构造了单摆大振幅振动的高精度解析逼近周期和周期解。
To state the restoring force of a simple pendulum during oscillation is the resultant force of the gravity of the ball and the pulling force of the thread is wrong .
常出现一些模糊认识，即认为单摆在振动中所受的回复力就是摆球所受重力与绳子拉力的合力，显然，这是错误的。
Under the action of random exciting displacement, the response of a simple pendulum with large displacement was studied in this paper by means of nonlinear spectral analysis.
本文应用非线性谱分析法对随机激振位移作用下大位移单摆的非线性随机响应进行了分析。
A variable length simple pendulum model is introduced, elementary analysis and perturbation analytic solution of nonlinear differential equation for parametric resonance are presented.
采用可变长度单摆的力学模型对秋千振荡给出初等分析，采用微扰近似法导出了秋千的非线性参数共振解析解， 并进行了讨论。
An excellent approximate solution of the motion of a nonlinear simple pendulum is obtained by the method of Green's function.
应用格林函数方法，给出了非线性单摆运动的较好近似解。
An excellent approximate solution of the motion of a nonlinear simple pendulum is obtained by the method of Green's function.
应用格林函数方法，给出了非线性单摆运动的较好近似解。
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