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박상곤(Sang Gon Park),구형욱(Hyung wook Koo),한현희(Hyun Hee Han),전종균(Chong Keun Chun),장승엽(Seung Yup Jang) 한국소음진동공학회 2014 한국소음진동공학회 학술대회논문집 Vol.2014 No.4
Recently the construction of stations under railway lines and railway sections passing through central area of cities are increasing, calling for an urgent establishment of countermeasures against railway vibration and its subsequent second-phase noise. Of technology developed up to now, the most efficient countermeasure is the floating slab track, a track system isolated from the sub-structure by springs. Developed in this study, anti-vibration device for floating slab track (HLRM-High Load Rubber Mount) Haman station affiliated to the primary measurement was conducted in October 2012, one year after the second measurement after 2013 to be carried out in November and we want to change that. It is expected to raise awareness for the need of technology self-support and to make a meaningful contribution to mitigating vibration and noise produced by the next-generation high-speed railway.
박상곤(Sang Gon Park),구형욱(Hyung wook Koo),한현희(Hyun Hee Han),전종균(Chong Keun Chun),장승엽(Seung Yup Jang) 한국소음진동공학회 2013 한국소음진동공학회 학술대회논문집 Vol.2013 No.4
Recently the construction of stations under railway lines and railway sections passing through central area of cities are increasing, calling for an urgent establishment of countermeasures against railway vibration and its subsequent second-phase noise. Of technology developed up to now, the most efficient countermeasure is the floating slab track, a track system isolated from the sub-structure by springs. Unfortunately, however, the system design technology and technology for key components have not yet developed in Korea. As such, in this study, the analysis and design technology of floating slab track and its vibration isolator technology can be achieved. In preparation for future demands, it is expected to raise awareness for the need of technology self-support and to make a meaningful contribution to mitigating vibration and noise produced by the next-generation high-speed railway.
형상 최적화를 통한 충돌하중을 받는 시험대차의 최적 형상에 관한 연구
양태호(Tae-Ho Yang),이영신(Young-Shin Lee),김태형(Tae-Hyeong Kim),설창원(Chang-Won Shul),양명석(Myung-Seog Yang),구형욱(Hyung-Wook Koo),이규섭(Gyu-Sub Lee) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.11
Impact Analysis of the structure under the impact load was needed to evaluate the structural safety of the impact resistance in structural design procedure. In this paper, To determine detail dimensions of the testbed under the impact load, the sizing optimization method was applied. The load condition in the optimization was used the impact load in various impact test standards. Design parameters of the testbed were applied as design variables in the optimization, such as round radius and thickness of the upper and lower plate and axial plate. The constraint variable was the total mass of the testbed. The objective variable was to maximize the 1st mode natural frequency and minimize the stress in the testbed.
진승균(Seung-Kyun Jin),이영신(Young-Shin Lee),양태호(Tae-Ho Yang),설창원(Chang-Won Shul),김태형(Tae-Hyeong Kim),배종수(Jong-Soo Bae),이규섭(Gyu-Sub Lee),구형욱(Hyung-Wook Koo) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
In this paper, the hyperelastic shock programmer was studied. programmer. the shock programmer was considered with cylindrical shape. Impact velocity and spring constant of shock programmer is also considered. In order to find dual impact test impulse, study about combination of the shock programmer was carried out. the time history on the acceleration of the test bed by simulation was compared under various parameters.
진승균(Seung-Kyun Jin),이영신(Young-Shin Lee),양태호(Tae-Ho Yang),설창원(Chang-Won Shul),김태형(Tae-Hyeong Kim),배종수(Jong-Soo Bae),이규섭(Gyu-Sub Lee),구형욱(Hyung-Wook Koo) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
In order to evaluate the safety of the impact load of the structure, impact test devices are used such as sharpy, lateral, hroizontal impact tester. And vareities of impact pulse are presented and modified in each country. Test table and impact table in shock machine are damaged during impact test. Damage of shock causes fatigue fracture. To study structural safety of impact load on test table, Changing shape can be on of the way. In this study, changing shape of test table is performed.