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철도차량 패널의 치수최적설계 및 리브 배치를 위한 위상최적설계
신대환(Dae-Hwan Shin),이현아(Hyun-Ah Lee),김광우(Kwang-Woo Kim),이장욱(Jahng-Wook Kim),박경진(Gyung-Jin Park) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
The railway-car body consists of sandwich panels, and a sandwich panel is constructed with panels and ribs. The mass of the body can be reduced by changing the thicknesses of the panels and ribs. The thicknesses of the panels and the ribs are defined as the design variables. Size optimization is performed to reduce the mass of the railway-car body. Constraints are defined as that the maximum stress of the entire structure and the maximum displacement of the side sill should be less than the allowable stress and displacement. Topology optimization is performed to maximize the stiffness of the structure with specific mass constraints. The railway-car body is divided into six parts. Each part is defined as the design domain and topology optimization is carried out individually. The same loading and boundary conditions are utilized for size and topology optimizations.
박경창(Park Kyoumg-Chang),정지호(Jeong Ji-Ho),이장욱(Lee Jahng-Wook),박근수(Park Geun-Soo),우관제(Woo Kwan-Je) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
Hyundai-Rotem Company has designed and manufactured Light Railway Vehicle (LRV) according to the Urban Rail Transit Code, which applies to urban railway vehicles in Korea. The Urban Rail Transit Code specifies the loads, for which vehicle bodies shall be capable of withstanding, identifies how material data shall be used and presents the principles to be used for design verification by analysis and test. The structural design of railway vehicle bodies depends on the loads they are subjected to and the characteristics of the materials they are manufactured from. Therefore Hyundai-Rotem Company has carried out Finite Element Analysis (FEA) and has performed load tests on the vehicle body according to the Urban Rail Transit Code. This research contains the results obtained by the analysis and the load tests. The analysis was carried out using I-DEAS Master Series 12 and load test were carried out using specially designed test jigs and equipment are used for the load tests.