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스플라인의 중공부 깊이가 프로펠러샤프트의 처짐에 미치는 영향
한동섭(Dongseop Han),김용(Yong Kim),이성욱(Seongwook Lee),한근조(Geunjo Han) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
A propeller shaft is the device which is used to transmit the power between two shafts in a vehicles, an industrial machinery, etc. The end of spline is worm due to the deflection of the propeller shaft, and a lifetime of it is reduced, because it for industrial machinery has the length of 2,500 ㎜, the weight of 300 ㎏f, and the sliding distance of ±250 ㎜, Accordingly in this study we analyzed the effect of the hole depth of spline on the deflection of a propeller shaft carrying out the finite element analysis, in order to determine the proper hole depth of spline to minimize the deflection of it. We adopt 5-kinds of hole depth of spline from 50 ㎜ to 250 ㎜ at interval of 50 ㎜ as the design parameter for the finite element analysis and the centrifugal force as the load condition.
[구조강도부문] 형상비와 점용접 상대위치변화가 용접된 두 사각평판의 좌굴응력에 미치는 영향
한근조(GeunJo Han),안성찬(SeongChan Ahn),심재준(JaeJoon Shim),이현철(HyounChul Lee),한동섭(DongSeop Han) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The stability of a plate structure is very crucial problem. Because the buckling strength of thin plates is lower than the yield strength of the material, spot welded reinforcement material is commonly used. But, the spot welding is practically designed by experiential decisions, so it is inefficient and has the risks of buckling demolition. In this study, relative location of spot welding was chosen for parameter and the result shows that the maximized reinforcement effect relative location of spot welding under compression were that on the condition of r<=1. in model I, model Ⅱ, relative locations of longitudinal and transverse directions were around the center of each available region, relative locations of model J] were symmetrically according to boundary line of separated regions, in model Ⅲ, relative locations were around the center and the shape of the locations was arrayed like V, that on the condition of r>=1, the results were similar to the above. And the case of shearing, relative locations were similar to that of compression, but were closer to the center of each available region than compression.
하정민(JeongMin Ha),한동섭(DongSeop Han),한근조(GeunJo Han) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
The brake system is very important part of the machine working. If the machine can't be stopped, it would be serious accident. It is the same as the ship. The mooring winch brake hold the ship in harbor. But sometimes it appeared the excessive stress and brake lining would be broken. So it is necessary to change the shape of brake system with improve the braking power. This study carried out research on optimum design like as moved the position of link pin or modified the thickness of brake band and lining.
전병하(ByeongHa Jeon),한동섭(DongSeop Han) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.4
로드셀형 풍향풍속계는 로드셀을 이용하여 풍향 및 풍속을 측정하기 위한 것으로 4개의 날개에 연결된 로드셀의 하중합을 이용하여 풍속을, 하중비를 이용하여 풍향을 측정한다. 풍향 및 풍속에 따른 각 로드셀 측정부의 응력을 분석하기위하여 0°에서부터 90°까지 11.25° 간격으로 8가지 풍향과, 20㎧~100㎧까지 20㎧ 간격으로 5가지 풍속을 설계변수로 채택하였다. ANSYS WORKBENCH와 CFX를 사용하여 풍향풍속계의 유동구조 연성해석을 수행하였다. A loadcell type anemovane which has windswept is the new device to measure the wind direction and speed. In this device, the wind direction is decided by using the ratio of load between each windswept , and the wind speed is calωlated by using the summation of all load. In this study the fluid - structure interaction (FSI) analysis is carried out to analyze the ratio of load and the summation if all loads. Accordingly the stress is dealt with instead of the load at the measurement part. In order analysis the stress at measurement part with respect to the wind direction and speed, eight kinds of wind direction on the intercal of 11.250 from 0° to 90° and adopted as the design parameters. And the FSI analysis for thε loadcell type anemovane is carried out by using ANSYS Workbench and CFX.
김형훈(Hyeonghoon Kim),한근조(Geunjo Han),한동섭(Dongseop Han) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
The heat generated by the brake system of vehicles results in reduction of friction force on the brake surface and vibration when breaking. These problems play essential part in break's performance. To solve these problems, extensive research has been conducted such as drilling cooling holes on the brake pud, accommodating ventilated holes and etc. In this study, we suggest the compression of brake in circumferential direction in order to improve its cooling performance. And we analyzed comparing temperature distribution which is generated accomplishing heat analysis at each disc.
유효 스프링 압축변위가 LMTT용 Shuttle Car의 충격흡수장치 충격 반력에 미치는 영향
임종현(Jonghyun Lim),한근조(Geunjo Han),한동섭(Dongseop Han) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
According to the increase of container trade throughout the world, the environment of ports is being fast changed and also the rapid increase of much transshipment cargo is expected. So, in the harbor loading and unloading system for the rapid treatment of transshipment cargo, the LMTT(Linear Motor-based Transfer Technology) that is horizontal transfer system in the maritime container terminal for the port automation is being studied. Therefore in this paper, to gain basic design data of shuttle car we studied the effect of effective spring compression displacement on the impact reaction force of the impact Absorbing system at the LMTT.
유한요소법을 이용한 원주가압형 Disc Brake의 열-구조 연성해석
김형훈(Hyeonghoon Kim),한근조(Geunjo Han),한동섭(Dongseop Han),이성욱(Seongwook Lee) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The heat generated by the brake system of vehicles results in reduction of friction force on the brake surface and vibration when breaking. These problems play essential part in break's performance. To solve these problems, extensive research has been conducted such as drilling cooling holes on the brake pud, accommodating ventilated holes and etc. In this study, we suggest the compression of brake in circumferential direction in order to improve its cooling performance. This newly proposed concept has been verified using finite element method and Thermal-structure Coupled Field Analysis along with comparative analysis with the existing ventilated disk.