THE FRAME STRENGTH FOR THE POWER PLANT AND HYDRAULIC TRANSMISSION OF DR1B DIESEL TRAIN TYPE

Abstract

Compliance with the regulatory requirements of the upgraded part of a diesel train is checked. The object of the study is a modified frame design for a new power plant and hydraulic transmission of DR1B diesel train type. The frame is designed for a new power plant, a comparative analysis of the original frame design with the modified one is presented, as well as their structural differences are described. The normative loading modes are described and the loading factors for assessing the strength of the frame structure under study are presented. A finite element model of the modified frame structure for the power plant is developed, its stress-strain state is analyzed, and on its basis a scheme for installing resistance strain gages is developed. The results of full-scale impact tests and running strength tests of a diesel train with a modified frame design are presented. A calculated and experimental assessment of the fatigue resistance reserve coefficient is performed.