A corresponding nonlinear finite element program in fortran is presented and a new stability analysis method about complex slope is proposed , using the newton - raphson method to solve the nonlinear equations 根據(jù)原理推導(dǎo)出了穩(wěn)定的計(jì)算公式,建立了非線性分析的實(shí)用方法,并采用牛頓?拉斐遜方法對(duì)本文所建立的非線性方程組進(jìn)行求解。
The calculating results are almost equal whether newton - raphson method or its modified form is used , especially with more times of loading , which indicates that essential of the two methods is same 無(wú)論是采用牛頓-拉弗遜法還是其修正的方法,結(jié)果相差不多,特別是加載次數(shù)增多時(shí),兩者的計(jì)算數(shù)值趨于一致,所以其實(shí)質(zhì)上是完全相同的。
We come up with an iterative approach using the newton - raphson method that has good efficiency and accuracy and is free from singularity and non - convergence except in a small region near the center of the earth 提出了一個(gè)基于迭代newton - raphson方法的坐標(biāo)變換快速算法。除了靠近地心的一個(gè)小區(qū)域之外,新算法不存在奇異和不收斂的情況。
A load flow algorithm including facts devices is presented in this paper . according to the characteristics of the facts devices , establish appropriately the model of load flow , then solves the load flow using the newton - raphson method 本文提出了一種包含facts元件的潮流計(jì)算方法,根據(jù)facts元件自身特點(diǎn),建立合適的潮流計(jì)算模型,再運(yùn)用傳統(tǒng)的潮流計(jì)算方法? ?牛頓?拉夫遜法進(jìn)行求解。
With finite element method and circuit theory , the nonlinear discrete mathematical model of controllable reactor is presented . secondly , since the controllable reactor is nonlinear , newton - raphson method is applied to solve the nonlinear finite element equations 本文基于有限元法,采用場(chǎng)一路耦合分析法,構(gòu)造了在這一混合激勵(lì)情況下,分析研究該可控電抗器的非線性的離散數(shù)學(xué)模型。
It is applied in analyzing and calculating static distortion of skylift in virtue of updated lagrange formulation and iterative method with moving coordinates . the solutions are worked out by increment principle and newton - raphson method 在分析和計(jì)算消防車伸縮臂的靜態(tài)變形時(shí),引入了幾何非線性的思想,借助更新的lagrange格式,將增量原理與牛頓-拉弗遜法相結(jié)合,并且使用帶有動(dòng)坐標(biāo)的迭代方法求解。
These geometric nonlinear behaviors such as the sag of inclined cables caused by their own dead weight , the interaction of large bending moment and axial forces in girders and towers , and the large displacement effects are considered during calculation . newton - raphson method and the displacement convergence norm are used to approach the solution iteratively 計(jì)算過(guò)程中計(jì)及了拉索的垂度效應(yīng),彎矩和軸力對(duì)主梁和主塔的組合效應(yīng)以及結(jié)構(gòu)的大變形效應(yīng)等幾何非線性影響因素,采用newton - raphson方法和位移收斂準(zhǔn)則進(jìn)行迭代求解。
For the mathematics model of differential / algebraic equation system , the penalty function is introduced in numerical computation , and runge - kutta method and newton - raphson method are used respectively in solving the ordinary differential equations and nonlinear equation systems . the process and the results are carried out under corba environment 本論文采用近年發(fā)展的懲罰函數(shù)方法進(jìn)行數(shù)值積分,對(duì)于常微分方程,采用runge - kutta方法進(jìn)行數(shù)值積分,對(duì)于代數(shù)方程,采用newton - raphson迭代方法求解,并在corba環(huán)境下實(shí)現(xiàn)。
According to the characteristic of the distribution network , based on thenewton - raphson method , used the object - oriented thought , bring forward an unite load node method for power flow calculation , and making a improvement of the node number method which is suitable for newton - raphson method , obtained a rapid convergence calculation method for power flow calculation 根據(jù)配電網(wǎng)的特點(diǎn),基于牛頓?拉夫遜法運(yùn)用面向?qū)ο蟮乃枷?提出了負(fù)荷節(jié)點(diǎn)合并的潮流計(jì)算方法,并引入了改進(jìn)的,適合于牛頓拉夫遜法的節(jié)點(diǎn)編號(hào)方案,得到了一個(gè)快速收斂的潮流算法。