The aim of this article focuses on deriving a fractal modification of the nonlinear oscillator in a porous foundation vibration. The variational principle and frequency formula of the fractal nonlinear equation are found by simple methods that were proposed by Ji-Huan He. In order to make the ...
频率公式,formula of vibration frequency resonant frequency formula谐振频率公式 3)plotting position formula经验频率公式 1.This paper, after analyzing the theoretical bases of threeplotting position formulae, uses statistics test method to choose the best one for P Ⅲ distribution.本文在阐述了三种经验频率...
light happens to be anelectromagnetic waveand the sound of the fan is asoundwave. A wave is certainly a vibration and carries energy with it. Most noteworthy, the number of waves passing by each second refers to the frequency of the wave. Moreover, its ...
1) formula of vibration frequency 频率公式 2) resonant frequency formula 谐振频率公式 3) plotting position formula 经验频率公式 1. This paper, after analyzing the theoretical bases of threeplotting position formulae, uses statistics test method to choose the best one for P Ⅲ distribution. ...
In this paper, an approach for investigating vibration characteristics of piezoelectric cylindrical shells under transverse vibration modes is presented. It is an extension of the related work for elastic shells. A formula for estimating transverse frequencies of the piezoelectric cylindrical shells is obta...
Finally,the presented theoretical formula of fundamental frequency was found to be valid in engineering and the frequency formula for vibration was discussed therein. The results indicate that section types of the girder,tower and cable has no influence on the vertical frequency formula for vibration ...
SFScuderia Ferrari(Formula 1 racing team) SFSoft Focus SFSurface Search Radar SFSemper Fidelis(US Marine motto; Latin: Always Faithful) SFSingle Frequency SFSticky Fingers(Rolling Stones album) SFSand Filter SFStar Fox(video game) SFSynovial Fluid ...
9 RegisterLog in Sign up with one click: Facebook Twitter Google Share on Facebook field frequency [′fēld ‚frē·kwən·sē] (electronics) The number of fields transmitted per second in television; equal to the frame frequency multiplied by the number of fields that make up one frame...
By fitting curve obtained suitable formula for the average flame height and the oscillation frequency in the plateau environment. 通过拟合得到了适用于高原环境下平均火焰高度及振荡频率公式。 www.fabiao.net 4. Used in TV gathering focus, oscillation frequency and timer circuits. 适用于电视聚焦,振荡,定...
In this paper, a new theoretical vibration model including the lateral and roll directions of ride vibration in space was constructed for the unsuspended tractor with 2 degrees of freedom, and the theoretical formula was presented for calculating the lateral natural frequency of domestic tractors. In...