Dynamics of a bridge beam under a stream of moving elements. Part 1-Modelling and numerical integration

作者：Podworna M^*

来源：Structural Engineering and Mechanics, 2011, 38(3): 283-300.

• bridge-track-train system
• fundamental tasks
• bridge beam
• moving elements streams
• one-way contact
• implicit equations of motion
• numerical integration

A new conception of fundamental tasks in dynamics of the bridge-track-train systems (BIT), with the aim to evaluate moving load's models adequacy, has been developed. The 2D physical models of BIT systems, corresponding to the fundamental tasks, have been worked out taking into account one-way constraints between the moving unsprung masses and the track. A method for deriving the implicit equations of motion, governing vibrations of BTT systems' models, as well as algorithms for numerical integration of these equations, leading to the solutions of high accuracy and relatively short times of simulations, have been also developed. The derived equations and formulated algorithms constitute the basis for numerical simulation of vibrations of the considered systems.

• 出版日期2011-5-10