项目来源

俄罗斯科学基金(RSF)

项目主持人

Ерофеев Владимир Иванович,Доктор физико-математических наук

项目受资助机构

Федеральное государственное бюджетное научное учреждение"Федеральный исследовательский центр Институт прикладной физики им.А.В.Гапонова-Грехова Российской академии наук",Нижегородская обл

财政年度

2023,2020

立项时间

未公开

项目编号

20-19-00613

项目级别

国家级

研究期限

未知 / 未知

受资助金额

未知

学科

Инженерные науки-Прочность,живучесть и разрушение материалов и конструкций

学科代码

09-09-101

基金类别

未公开

关键词

Высокоскоростной движущийся объект ; рельсовая направляющая ; ракетный трек ; грунт ; динамика ; устойчивость ; High-speed moving object ; rail ; rocket track ; soil ; dynamics ; stability

参与者

未公开

参与机构

未公开

项目标书摘要：Возможность практического использования результатов:Задачи устойчивости движения высокоскоростных объектов по рельсовым направляющим,задачи генерации изгибных и изгибно-крутильных волн в рельсовых направляющих являются актуальными и их результаты могут служить методическим и расчетным сопровождением при проектировании высокоскоростных транспортных систем как гражданского,так и оборонного назначения.

Application Abstract: Annotation:The project is aimed at solving the problems of developing high-speed land transport,improving the design of ejection rocket launchers(rocket tracks)used in ground testing of aviation and rocket technology.In the course of its implementation,it is planned to carry out theoretical and experimental studies of the stability and wave dynamics of objects moving along deformable guides in relation to the problems of high-speed land transport(pantograph and contact wire in the current collection system;rolling stock and rail track),as well as to problems of improving rocket designs trains accelerating along the rail guides of rocket tracks.Will be developed three-dimensional models of a railway track,including a deformable guide(a beam of finite width,a plate)lying on a half-space(viscoelastic,layered,nonlinear-viscoelastic,thermo-viscoelastic,gradient-elastic)and experiencing a high-speed moving load(oscillator or system of oscillators).In this case,the deformable guide interacts with half-space either through discrete supports(sleepers),or directly.The features of wave generation in the guide and half-space caused by high-speed moving motion will be investigated.The influence of the guide parameters on the critical speeds of high-speed objects will be determined.The dispersion and energy characteristics of waves propagating in one-dimensional and two-dimensional devices lying on a deformed base will be calculated:on a half-space or on a discrete elastic(viscoelastic)system with two stiffness coefficients of the basement.The resonance modes and stability of the movement of high-speed objects along the guides(pantographic and contact wire in the current-collecting system;rolling stock and rail track;payload accelerated on a rocket track)will be investigated.The dependence on the force and speed of the guide will be analyzed.Will be studied a question of energy consumption to maintain the uniform movement of high-speed objects.There will be a modernization of previously developed(with the participation of the project applicants)computational and experimental methods for determining the areas of sustainable movement of high-speed objects along rail tracks,which have already found application in the design,manufacture and operation of high-speed passenger transport,experimental rocket tracks designed to accelerate rocket trains to speeds reaching two kilometers per second,new design and experimental methods have been developed.Expected results:Will be carried out theoretical and experimental studies of wave dynamics and stability of systems,including soil,rail guide and high-speed moving object.Calculation and experimental methods will be developed to determine the areas of sustainable movement of high-speed objects along rail tracks,which will be used in the design,manufacture and operation of both high-speed passenger transport and experimental rocket tracks designed to accelerate rocket trains to speeds reaching two kilometers per second.