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나상도(Sang Do Na),김보민(Bo Min Kim),유완석(Wan Suk Yoo) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.5
The paper presents a lumped parameter vehicle dynamic modeling method that includes kinematic characteristics of suspensions. The relative displacement and orientation of a wheel with respect to car body are represented as a function of the vertical displacement of the wheel. The vehicle is modeled as five bodies (chassis, 4 wheels) by using ADAMS. The equation of motion of the vehicle is consisted in terms of the chassis local coordinates which do not require coordinates transformation to enhance efficiency in dynamic analysis. The analysis results were compared with ADAMS results to verify the accuracy.
K&C Test data를 활용한 조향축 지오메트리 계산
박평화(Pyeong Hwa Park),나상도(Sang Do Na),김도균,이종식(Jong Sik Lee) 한국자동차공학회 2019 한국자동차공학회 부문종합 학술대회 Vol.2019 No.5
Steering axis geometry is important thing in the vehicle handling and steering performances. And that information is necessary to make vehicle simulation model. Unfortunately in order to secure the steering axis geometry information, we need to suspension hardpoint data. In addition to, in case of multilink suspension, even if we have hardpoint data we can’t calculate steering axis geometry directly. This paper calculates steering axis geometry by using screw axis theory and K&C data. And verify by comparison with the ADAMS/Car simulation result and apply to K&C Test data which created by MTS K&C test system.