피라미드 트러스 심재를 적용한 도시철도 차량출입문의 3점굽힘해석

초록

In this study, the employment of a pyramidal truss core in an urban transit vehicle door was investigated in place of honeycomb core. At present, the structural requirements of urban transit vehicle doors have been specified in KRS and KRT, in which minimum deflections for three point bending tests are indicated. In this regard, finite element simulations on the three point bending tests were carried out for a door with honeycomb and one with pyramidal truss core of the equivalent mass, respectively. And then, the deflections were compared with those regulations. It was proved that pyramidal truss cores can be applied to the doors of urban transit vehicles.