Structural characteristics of railway vehicle floors with joints

연결체결부를 갖는 철도차량 바닥재의 구조특성

The floor structure of railway vehicles consists of plywood, rubber, and wood keystone plate which affects on the comfort of passengers. Its structural characteristics has been investigated experimentally and numerically for samples of beam and plate structure, and the real floor structure in this paper. The material properties of etch part measured directly by experiments. The deformation and stress distribution of the sample beams for 6 different joints were sought experimentally and calculated using a commercial software. The numerical calculation shows that the effect of friction and clearance between joints is crucial. The DMU/EMU plates were also experimented and compared for different loading conditions. The structural characteristics of the whole floor structure were calculated numerically. The results show that the method of joint between plywoods is an important factor to decide the strength of the floor structure of railway vehicles.