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首页> 外文期刊>Zeitschrift fur Angewandte Mathematik und Mechanik >THE NUMERICAL INTEGRATION OF NEUTRAL FUNCTIONAL-DIFFERENTIAL EQUATIONS BY FULLY IMPLICIT ONE-STEP METHODS
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THE NUMERICAL INTEGRATION OF NEUTRAL FUNCTIONAL-DIFFERENTIAL EQUATIONS BY FULLY IMPLICIT ONE-STEP METHODS

机译:完全隐式单步法中立型泛函微分方程的数值积分

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摘要

An algorithm for the numerical solution of neutral functional-differential equations is described. This algorithm is based on divided difference representation of fully implicit one-step methods. The resulting systems of nonlinear equations are solved using the predictor-corrector approach for nonstiff equations and by the modified Newton method for stiff equations. The step control strategy is based on local error estimation by comparing two approximations of successive orders. The details of implementations are described for systems of neutral delay-differential equations with state dependent delays, for Volterra integro-differential equations and for stiff delay-differential equations. The results of some numerical experiments on four test examples are presented and discussed. [References: 24]
机译:描述了中立泛函微分方程数值解的算法。该算法基于完全隐式一步法的差分表示。对于非刚性方程,使用预测器-校正器方法,对于刚性方程,则使用改进的牛顿法求解所得非线性方程组。步进控制策略基于局部误差估计,通过比较连续阶数的两个近似值。对于具有状态依赖延迟的中立延迟-微分方程系统,Volterra积分-微分方程和刚性延迟-微分方程,描述了实现的细节。给出并讨论了在四个测试示例上进行的一些数值实验的结果。 [参考:24]

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