경충돌 안전장치용 전단볼트의 충돌성능 설계

초록

This paper demonstrates the jig set for the crash test and the crash test results of Shear bolts whtch are designed to be failed at train crash conditions The tension and shear balts are adopted at tlght collision Safety Devices as a mechantcal fuse When tension balts reach designed fallure load The klnetic energy due to the crash ts absorbed by Secondary energy absorbing devlces after Ltght Collislan Safety Devlces off from the main body by the fracture of Shear holts stngle shear boIt was destgned to be failed at the load ot 250 kN The jig set was designed to convert a Compresslve loading to a shear loading and Installed at the high speed crash tester The strain gauges were attached at the parallel Section of the jig set to measure the load responses acting on the shear bolts crash tests were performed wlth a barrler whose mass was 250kg and inltial speed of the barrier was0m/sec The results contmn quast-static and dynamlc shear tests wlth two lnds of Shey spectmens