Article ID Journal Published Year Pages File Type
510050 Computers & Structures 2015 18 Pages PDF
Abstract

•One-step multiple-value methods are developed.•Amplitude errors are minimized and phase shift errors are controlled.•Enhanced Newton–Raphson scheme avoids frequent calculation of a residual function.•Generalized Newmark method of Zienkiewicz and Taylor is a subset of this algorithm.•Hardening, softening spring-mass systems and van Pol oscillator equation are solved.

One-step multiple-value methods are developed which involve an accurate predictor method with higher derivatives, followed by a corrector method cast in form of an enhanced Newton–Raphson scheme. The generalized Newmark (GNpj) method may be recovered as a special case. The algorithms serve to match the accuracy of the fourth-order Runge–Kutta–Fehlberg method. Challenges to solve more reliably, accurately and efficiently non-linear differential equations are highlighted as stemming from amplitude and phase shift errors introduced by discretization in space and time – a continuous-discrete transformation. The classical stability tool of spectral radius is performed on linear systems whereas Liapunov method on nonlinear systems.

Related Topics
Physical Sciences and Engineering Computer Science Computer Science Applications
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