central difference method meaning in English
中心差分法
Examples
- Central difference method
中心差分法 - Numerical examples show that the results are highly accurate in comparison with newmark > wilson - # - . houbolt and central difference method
算例表明解析逐步积分法和积分型直接积分法比中心差分法、 newmark 、 wilson - 、 houbolt法等有较高的精度。 - Based on the unified recursive formula , the four algorithms included in this study are the central difference method , the newrnark ' s method , z - transform method , and duhamel ' s step integral method . the accuracy , the phase and other existent problem are studied in this paper . it is proved in this paper that the recursive parameters b1and b2are relate to the poles of theoretical transfer function
分析中可以发现，中心差分方法， newmark中点加速度方法、 z变换方法及duhamel逐步积分法在精度范围内其计算相位是没有畸变的，中国地震局工程力学研究所顷土学位论文一但是中心差分方法， newmark中点加速度方法随着采样间隔及系统自振频率的增大，系统的固有自振周期被改变，其传递函数的共振区域与理论传递函数的共振区域会发生分离。 - And the explicit finite difference method , the combining method of the central difference method and newmark s constant average acceleration method , and the transmitting boundary are used . by comparing the acceleration determined by the several methods of the displacements or velocities , a computing method of acceleration employed the one side difference of velocity is more practicality in this research . corresponding to normal incidence of the body waves , p waves or svwaves , and rayleigh surface waves , two two - dimensional finite difference programs are compiled to compu te the dynamic response of two - phase media
以土力学模型为基础，利用以土骨架和孔隙流体的四个位移为基本未知量的数值方法去模拟二维饱水介质中的地震波传播，采用了显式差分方法(中心差分法和newmark常平均加速度法结合)和透射边界，通过比较利用几种差分格式求解的加速度结果，发现一种用速度单边差分求解加速度的方法在本文研究中较为实用，分别编制了体波( p波或sv波) 、 rayleigh面波输入时求解两相介质动力响应的两个二维数值分析程序。