ABOUT MODELS OF INTERACTION OF HIGH-SPEED VEHICLE WITH BEARING STRUCTURES AND ENVIRONMENTS (REVIEW)

Abstract

Purpose. The paper deals with the history and problems of the development of static-dynamic interaction of vehicles, structures and infrastructure facilities. The introduction describes some publications on a rapidly developing topic, and the goal of the article is to clarify the design schemes and models. Methodology. In the research methodology, new elements of the dynamic loads external and arising from the interaction of structures with the crews are given. Results. Examples of interaction between transport and load-bearing construction objects are demonstrated, and recommended compositions of the main subsystems of tasks are given. The originality consists in the joint consideration of the statics and dynamics of nonlinear systems, for which the superposition principle, widely used in the finite element method (FEM) for independent separate calculations for statics and dynamics, is inapplicable. Convenient and familiar experience for engineers with computer simulation based on linear dynamics in FEM, i.e. service of linear calculations of statics, can be conventionally used only for initial debugging of the linear part of nonlinear programs. It is the latter circumstance that expands the boundaries and significance of more substantiated practical calculations. Practical value. The ways of development of theoretical and experimental methods of calculation, design, testing and diagnostics of the technical condition of various objects of construction, transport and mechanical engineering are proposed. The most important practical solution is the creation of incubator schools for training specialists and the opening of engineering courses on structural dynamics aimed at updating knowledge and licensing personnel.