Based on theory of simple harmonic oscillation in physics,this paper presents a novel model for production decline prediction given by deformation of critical damping oscillation equation which is predigest.
基于物理学中的简谐振动原理,提出了把阻尼振动方程中的临界阻尼振动方程变形得到一种新的产量递减模型,可简化为Arps指数递减形式,经实例计算,可以用来预测油田产量,以此指导油田开发和管理。
This paper presents a simple method for measuring gas adiabatic constant by use of simple harmonic oscillation.
本文介绍了一种简单的利用简谐振动现象测量气体的定熵指数的方法。
The harmonon soft modes in a perovskite structure system;
钙钛矿结构中的简谐子软模
Many harmonon soft modes are found and they can be used to explain why that barium titanate crystal has a and c domain structures in ferroelectric phase transition while temperature rde-duces.
用复合空间型方法,在自由边界条件下解出了钛酸钡有限尺寸晶体的简谐振动方程,发现许多简谐子软模。
Describe harmonic vibration with rotation vector;
用旋转矢量描述简谐振动
During the teaching of Medical Physics, it is difficult to describe harmonic vibration with rotation vector clearly just with some static pictures.
《医学物理学》课程中,简谐振动旋转矢量法的学习,仅靠静态图片不利于阐明其原理。
A cam-spring mechanism was used in a design of scanner,which dynamic characteristic can be described with a model of harmonic vibration,and the critical frequency for fast returning movement is given.
在采用凸轮扭簧机构驱动的某热像仪扫描器设计方案中,利用简谐振动模型来分析摆镜的回复运动过程,并得出了实现快速回扫所需要的角频率临界值。
The Rheovibron measures the damping of material according to the longitudinal simple harmonic vibration of equal cross section bar.
流变振动仪利用等截面杆的纵向简谐振动来测定材料的阻尼，十分方便和有效。
The important parameters, which characterize the Lissajous’ figures, are presented by synthesizing two mutually vertical simple harmonic vibrations whose ratio of frequencies is a rational number.
通过对两个相互垂直、频率比为有理数的简谐振动的合成研究,提出了描述合振动轨迹的特征参量:振幅比、频率比、图形余弦、方向正弦。
Dynamic equation of simple harmonic vibration machine with Single-degree-of-freedom is solved by transfer function algorithm,accordingly,obtains relationship between displacement of vibration body and exciting force.
采用传递函数法求解单自由度简谐振动机械的动力学方程,得到振动体位移与激振力的关系,通过激振力频率和振动体质量的波动对振动体振幅的影响分析,以及隔振系数与频率比关系的分析,提出了该类振动机械合理的下限频率比;同时考虑到弹性支承在振动体重力作用下的静变形应大于振动体的最大振幅,从而给出了弹性支承刚度的设计依据和激振力幅值的计算公式,为单自由度简谐振动机械的设计提供了系统的理论和方法,并通过算例进一步阐述了该设计方法的应用。
Research on structural dynamic simulation of basic harmonic excitation test;
基础简谐激励试验的结构动力学仿真研究
Response of circular plate with elastic boundary conditions to harmonic excitation;
具有弹性边界条件的圆板对简谐激励的响应
The response of undamped multi-degree-of-freedom systems to harmonic excitations for arbitrary initial conditions is presented.
给出了一般初值条件下无阻尼自由度振系对简谐激励的响应公式，作为特例讨论了无阻尼动力吸振器，结果表明无阻尼动力吸报器并不能完全消除主系统的振动。