摘要：In this paper a direct integration of second-order Ordinary Differential Equations (ODEs) of the form , , , using the Explicit Runge-Kutta-Nyström method with higher derivatives is presented. Various numerical schemes are derived and tested on standard problems. The higher-order explicit Runge-Kutta-Nyström (HERKN) method given in this paper is compared with the conventional Explicit Runge Kutta (ERK) schemes. Due to the limitation of ERK schemes in handling stiff problems, the extension to higher order derivative is considered. The results obtained show an improvement on ERK schemes.
关键词：Runge–Kutta–Nyström method; HERKN method; higher-order derivatives; second order ordinary differential equations
