• EDISON SW 활용 경진대회 논문집
• /
• 제5회(2016년)
• /
• pp.516-517
• /
• 2016

I use Jansen mechanism to reduce the unnecessary motion of car body and improve the motion performance capability in the rugged terrain To reduce the unnecessary motion, the positional variation of a main body of vehicle should be minimized. In order to reduce the change of height and control the speed at every moment when vehicle move, 16 legs or more are installed on a crankshaft and the paths of leg motions need to be considered in the rugged terrain. The vehicle will be optimized so that it produces a sufficient speed and torque for practical use. Finally, I designed proper body with Edison simulation. The simulation is good for beginners of mechanism design.

• 한국전산유체공학회:학술대회논문집
• /
• 한국전산유체공학회 2008년도 춘계학술대회논문집
• /
• pp.51-53
• /
• 2008

The vehicle aerodynamic crosswind characteristics are mainly governed by the coefficient of side force and yawing moment. These performances affect not only the driving comfort which can be felt by driver but also the safety due to the instability of vehicle. The aims of this investigation are to improve the aerodynamic crosswind performance of sedan vehicle under the crosswind conditions. In order to improve the crosswind stability, numerical analysis has been performed by modifying the rear body shape of vehicle. As the results, we observed about 20% reduction of yawing moment coefficient relative to the base vehicle.

• 자동차안전학회지
• /
• 제14권4호
• /
• pp.77-83
• /
• 2022

Occupant behaviors and body contact with vehicle interior parts are main injury mechanism in far-side collisions. In vehicle side impact accident where the crash accident occurs on the opposite side of the vehicle from the a particular occupant, it is exposed in terms of relatively larger lateral motion to interact with the opposite side of the vehicle structure. The challenge of minimizing motions of upper body and injury risk according to a direct contact is a primary occupant protection research. This study has performed a data analysis of real-world accident database extracted from the 2016~2020 CISS database and a parametric investigation of impact angles and occupant kinematics in far-side lateral and oblique impact simulations. A detailed data analysis was conducted to reveal the relationship among the accident and injury data. Database analysis and computational far-side impact results proposed the fundamental vehicle design for safety improvement in far-side collisions.

• 한국산학기술학회논문지
• /
• 제14권9호
• /
• pp.4142-4148
• /
• 2013

경사지 과수의 효율적인 재배 및 관리를 위해 과수원 전용 고소 작업차량 사용이 늘어나고 있다. 이러한 이유로 작업자 안전을 위해 고소 작업차의 안정성에 대해 연구가 요구되고 있다. 본 연구는 경사지 흙길을 주행할 수 있는 4개의 바퀴와 2개의 직교 좌표계 적재함을 가진 과수원 차량의 안정성 평가에 대한 연구이다. 차량 메커니즘에 대한 다물체 동역학(MBD) 해석을 통하여 19.2, $34.6^{\circ}$의 좌우 및 상하 방향의 전복각을 계산할 수 있었다. 바퀴들의 주행 저항과 소요 동력을 결정하였다. 그리고 적재함 프레임의 유한요소해석(FEA)를 통하여 최대응력 146 MPa로 구조적으로 안정하다. 따라서 적재함을 가진 바퀴형 과수원 차량은 정적 및 동적 안정성을 가짐을 알 수 있었다.

• 전산구조공학
• /
• 제22권2호
• /
• pp.40-47
• /
• 2009

• International Journal of Automotive Technology
• /
• 제7권1호
• /
• pp.35-41
• /
• 2006

Driving simulations were performed to evaluate the effect of providing both visual information and body sensory information on changes in steering characteristics and the amount of perspiration in drift cornering. When the driver is provided with body sensory information and visual information, the amount of perspiration increases and the driver can perform drift control with a moderate level of tension. With visual information only, the driver tends to easily go into a spin because drift control is difficult. In this case, the amount of perspiration increases greatly as compared with the case where body sensory information is also provided, reflecting a very high perception of risk. When body sensory information is provided, the driver can control drift adequately, feeding back the roll angle information in steering. The importance of the driver's perception of the state of the vehicle was thus confirmed, and a desirable future direction for driver assistance systems was determined.

• 한국철도학회논문집
• /
• 제6권4호
• /
• pp.286-293
• /
• 2003

The prototype of Korean high speed train (HSR350), composed of two power cars, two motorized cars and three trailer cars, has been designed, fabricated and tested. In this paper, the body vibration has been reviewed from the viewpoint of the vehicle's safety and the vibration limits for components and sub-assemblies mounted on the car-body using by the experimental method. And, the dynamic characteristics, such as jerk, natural mode and kinematic mode, have been reviewed. The KHST has been run to 300 km/h in the KTX line and the results of on-line test show that it has no problems in the vehicle's safety and the vibration limits. And the characteristics of body vibrations has been predicted at 350 km/h by fitting curve about the measured acceleration signals.

• 동력기계공학회지
• /
• 제14권6호
• /
• pp.47-53
• /
• 2010

A stabilizer link connects the stabilizer bar to the lower arm of the suspension. When a vehicle is turning, lateral forces from the tire are transmitted through the stabilizer link into the stabilizer bar. The stabilizer bar will twist, thus adding rigidity to the vehicle body. In this study, the stabilizer link body was manufactured by using composite material with POM-GF25%. Therefore, the strength evaluation of stability link body with composite material carried out from tensile, wear and fatigue test. The tensile strength between the stability link body with composite material and the rod with knurling was the largest of four types of rod. In Analyzing materials property using optical sensing technique of stabilizer link for automobile parts, its has been identified the safety.

• 한국소음진동공학회:학술대회논문집
• /
• 한국소음진동공학회 2001년도 추계학술대회논문집 II
• /
• pp.671-675
• /
• 2001

Elastomers, which are engine mounts and body mounting rubbers, are traditionally designed for NVH use in vehicles, and they are designed to isolate specific unwanted frequencies. According to the measurement of the characteristics of engine mounts and body mounting rubbers, dynamic stiffness changes with respect to the driving miles accumulated in engine mounts and initial load in body mounting. This study looks at the variability in same engine mount properties, and the desired dynamic stiffness may increased with driving miles accumulated. And the dynamic stiffness of body mounting rubber changes very stiff above 150Hz.

• 한국정밀공학회지
• /
• 제23권9호
• /
• pp.7-14
• /
• 2006