Comparative analysis of integration methods for nonlinear elasticity theory equations / *M. V. Kozlov, S. V. Sheshenin.* // Vestnik Moskovskogo Universiteta. Seriya 1. Matematika. Mekhanika. 2013. № 4. P. 61-65
[Moscow Univ. Math. Bulletin. Vol. 72, N 2, 2017. P. 0].

In this paper we describe the way of practical solution of the variational equation in geometrically and physically nonlinear problems of deformable body mechanics. A system of a large number of nonlinear ordinary differential equations usually appears in such problems. The Euler method is typically used in this approach. We propose to use a Runge-Kutta method and multistep methods and consider the solution complexity in terms of computing cost to find a method that provides a more efficient solving procedure of nonlinear problems.

*Key words*:
rubber-cord, composite, nonlinearity, variational equation, linearization, finite element method, Euler method, Newton method, Runge-Kutta method, multistep method.