Stability analysis of vibrations in a complex moving object equipped with two innovative types of stabilizers: A comparative study

Abstract

This study addresses the dynamic response of beam structures under moving loads, a critical challenge in the design of modern railway systems driven by advances in transportation technology. The focus lies on evaluating the vibrational stability of mechanical oscillators operating within continuous beam-foundation systems, which are integral to the reliable performance of high-speed trains. Using the d-decomposition method combined with the principle of argument, two stabilization models are compared: one incorporating a stabilizer directly attached to the car body and another employing stabilizer attached to the bogies. The findings underscore the advantages of the direct stabilizer connection, as models with car-body-connected stabilizers demonstrate larger stability regions. This configuration allows for substantial variations in stiffness and damping properties with negligible influence on stability dynamics. Conversely, models with bogie-connected stabilizers are more sensitive to parameter changes, particularly in heavier car bodies. By advancing the understanding of stabilization mechanisms in mechanical oscillators, this research contributes to the optimization of railway systems for modern transportation demands. The findings highlight the practical advantages of car-body-connected stabilizers, which offer superior adaptability and consistent stability, highlighting their potential for practical applications in the technical domain.