PREDICTION OF THE RESIDUAL RESOURCE OF THE COACH HOPPER-BATCHER AFTER LONG OPERATION TAKING INTO ACCOUNT ACTUAL PHYSICAL AND MECHANICAL CHARACTERISTICS OF THE MATERIAL OF THE BEARING STRUCTURE

PUTYATO Artur V., Dr. Techn. Sc., Associate Professor, Head of the Department “Dynamics, strength and wear resistance of vehicles”, Belarusian State University of Transport, Gomel, The Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

KONOVALOV Evgeniy N., Researcher of ISL “TTERRSU”, Belarusian State University of Transport, Gomel, The Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

AFANASKOV Pavel M., Post-Graduate Student, Belarusian State University of Transport, Gomel, The Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

Procedure of prediction of a residual resource of a bearing structure of the special railway car hopper-batcher after long- term service has been developed. The procedure includes following steps: study of engineering data, operating conditions and analyzing the technical tests and repair information; development the diagnostic charts for body and frame, visual control and thickness measuring of the construction elements, control of weld seams and body metal, car screening and test sampling the worst technical condition parts; development of computer models and virtual testing of the carriage, taking into consideration real thickness of construction elements, in order to determine the relevance of degraded structure to the requirements of actual engineering data; loaded testing of the car bearing structure; analysis of the results of calculations and tests, determining the problem areas on the bearing structure, developing sampling scheme and sampling for chemical and physical-mechanical properties of the bearing construction material; investigation of chemical and physical-mechanical properties of the bearing construction material having long-term operational life; experiment-calculated evaluation of residual in-use utility for the bearing construction of the car, taking into account real test data and established properties of the material. The calculation-experimental technique of an estimation of the resource, differing by the account of conditions and intensity of service of the special railway car, actual physicomechanical properties of its bearing structure, and also results of the spent virtual and natural tests is offered. Results of virtual and experimental researches of the stress strain condition of a bearing structure of the car are shown, and also research of physical and mechanical properties of a material of a bearing structure after long-term service has been resulted. It has been established, that the construction corresponds to actual standard requirements. The estimation of a residual resource of a bearing structure of the car after 50 years of service has been executed. It has been established the residual resource makes not less than 11 years.

coach hopper-batcher, long-term service, bearing structure, material properties, residual resource

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