逐步积分法 meaning in English
step by step integration
Examples
- Step - by - step integration method based on gurtin variational principle of displacement model
变分原理的逐步积分法 - 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。 - The highly precise direct integration scheme is used for solving modal dynamic differential equation of the structure and a dynamic load identification method by the modal respondence is proposed
采用无条件稳定的精细逐步积分法求解结构的模态动力学微分方程，构造了通过结构的模态响应直接反求荷载列阵的迭代算法。 - Time history analysis is carries on after the seismic waves being numbered according to period , input values of seismic wave to vibration equation of system , adopt the method of progressive integral to gain the whole course of the structure ' s state at the whole earthquake
时程分析是将地震波按时段进行数值化后，输入结构体系的振动微分方程，采用逐步积分法得出结构在整个地震时域中振动状态的全过程。 - 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。