@Article{AAMM-16-423, author = {Zhang , ChengjianWang , Siyi and Tang , Changyang}, title = {Implicit Runge-Kutta-Nyström Methods with Lagrange Interpolation for Nonlinear Second-Order IVPs with Time-Variable Delay}, journal = {Advances in Applied Mathematics and Mechanics}, year = {2024}, volume = {16}, number = {2}, pages = {423--436}, abstract = {

This paper deals with nonlinear second-order initial value problems with time-variable delay. For solving this kind of problems, a class of implicit Runge-Kutta-Nyström (IRKN) methods with Lagrange interpolation are suggested. Under the suitable condition, it is proved that an IRKN method is globally stable and has the computational accuracy $\mathcal{O}(h^{min\{p,\mu+ν+1\}}),$ where $p$ is the consistency order of the method and $\mu, ν ≥0$ are the interpolation parameters. Combining a fourth-order compact difference scheme with IRKN methods, an initial-boundary value problem of nonlinear delay wave equations is solved. The presented experiments further confirm the computational effectiveness of the methods and the theoretical results derived in previous.

}, issn = {2075-1354}, doi = {https://doi.org/10.4208/aamm.OA-2022-0290}, url = {http://global-sci.org/intro/article_detail/aamm/22338.html} }