查询词典 method of perturbation

Considering the effect of reinforcement, the method, which may be called the method of modal perturbation , is put forward.

提出了考虑纵向钢筋作用后梁自由振动分析的模态摄动法，通过实际算例，说明不同含钢率梁的自振特性的变化情况。

To solve such problems, a special method of calculation "Perturbation Method for Variable Boundary Problems" has been put forward, including the corresponding condition of convergence.

这里提供一种解决这类问题的计算方法——"变动边界微扰法"，并给出了微扰过程的收敛条件。

The question studied in the dissertation is supported by National Natural Science Fund(N259675041): Theory and Method of Visual Inverse Perturbation Method.

本文针对上述存在问题，研究机械和工程结构动力优化设计的理论和方法，重点研究逆摄动法求解上述两类反问题。

Under certain road condition, the solutions to the vibrating equations can be foud out through the precise time-integration method and the method of perturbation, and the two results agree with each other.

用精细时程积分法和摄动法求出了一定路面输入下方程的解，两种方法所求结果符合良好。

Some conclusions are obtained:(1) The interval data concept can rationally settle the apart component's dependence problem of monitoring data;(2) The survey point's displacement which is the material parameter's increasing function or deducing function can be used to back-analyse the material parameter's up and down limit; and (3) Both the interval parameter perturbation back analysis method and the interval parameter monotony back analysis method can obtain satisfactory interval parameters.

通过分析得出结论：(1)可利用区间数概念合理解决监测资料中分离分量相关性的问题；(2)可利用工程结构中位移为待反分析材料参数的增函数或减函数的测点位移的上、下限，来反演得到不确定性材料参数的上、下限；(3)工程算例分析表明，区间参数摄动优化反分析法和区间参数单调性优化反分析法都能得到令人满意的参数区间。

In this paper, The numerical method is adopted to calculate the motions in time domain based on the simple Green function and perturbation expansion method put forward by Isaacson and Cheung.

本文应用简单格林函数和摄动展开的理论方法在时域内对锚泊系统进行了数值模拟。

At last, the MC method,PPEM, and the frequency transfer function perturbation method have been used to analyze the effect of structural random damping onstructural displacement.

在论文的最后，利用Monte Carlo法、摄动虚拟激励法、频域传递函数摄动法研究结构随机阻尼对结构位移响应的影响。

A static interval optimization method for structures was proposed. The matrices of structures with interval parameters were given. Combining the interval extension of function with the perturbation theory of static analysis, the method for interval static analysis was derived.

提出了一种在位移约束下结构静力区间优化方法，给出了区间参数结构矩阵，将结构静力分析的摄动理论与区间函数扩张定理相结合，推导了结构静力分析的区间方法。

Simulation results show that the chaotic system can be controlled effectively in Buck power converter by this method. The method is still effective when there are parameter perturbation and noise.

数值仿真结果表明：该方法能有效地实现Buck功率变换器混沌系统的控制，系统在参数发生摄动和存在噪声的情况下，控制仍然有效。

In this paper,the artificial parameter perturbation method and variational iteration method have been applied to nonlinear differential equation with power nonlinearities.

应用人工参数法和变分迭代算法，求解了具有分数阶非线性的一阶常微分方程。

Green function defined inphase space differs from one in coordinate space by its struc-ture which exhibits nonlocatity in coordinates and oscillatorybehavior with respect to momenta.

在相空间中定义的Green函数不同于通常坐标空间的Green函数，在结构上显示出对坐标的高度非局域性，而对动量则显示出振荡行为。

The upper front part of a saddle;a saddlebow.

前鞍桥马鞍前面的上部分；前鞍桥