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정웅교(Woongkyo Chung),황준효(Junhwyo Hwang),유영선(Youngsun Yoo),원영섭(Youngsub Won) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
Generally, the vehicle dynamics performance is influenced by chassis system. It is hard to make a general and absolute standard that the evaluation about handling and stability performance of vehicle majorly depends on subjective evaluations. In passenger car, according to the load distribution, the change of load in front & rear wheel affect on the vehicle dynamics characteristics such as lateral acceleration, side slip, roll, yaw moment. So, from the initial stage of development, if it is considered that making a boundary for load distribution under the selection of power train & suspension type , it can be a good guidance to materialize the good ride & handling performance of vehicle. So, In this paper, real car test & K&C test and multi-body model simulations are performed to understand the effect on vehicle ride & handling performance from load distribution. The results of each test are compared to analyze the effect of load distribution to vehicle ride & handling performance. Through the understanding of the effect, try to find the way to predict the cornering performance.
차량 쏠림 민감도 분석을 이용한 쏠림 개선에 관한 연구
노승진(Seungjin Noh),한성제(Sungje Han),황준효(Junhwyo Hwang),김상진(Sangjin Kim),이철훈(Chulhoon Lee),김우신(Woosin Kim),신상하(Sangha Shin),최진호(Jinjo Choi),장진희(Jinhee Jang),김인동(Indong Kim) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
Vehicle pull is one of the most important problem on the vehicle quality from customers. To understand the vehicle pull, this paper describes vehicle pull phenomenon by considering causing factors of conicity and PRAT, vehicle factors of wheel alignment, and the external environment factor of road slope and weight. Those factors must be analyzed to improve the vehicle pull tendency. Therefore, by using Pull sensitivity analysis, vehicle pull simulation which makes it possible to consider the effect of passenger and road slope, PRAT, conicity and wheel alignment, is applied to evaluate and Steering Wheel Torque.
토션빔 현가 장치를 가진 차량의 현가계 특성 변화에 따른 Floor SRS 개선 방안 연구
서정원(Jungwon Seo),김상진(Sangjin Kim),노승진(Seungjin Noh),황준효(Junhwyo Hwang),박수용(Sooyong Park) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
This paper aims to explain the effect of suspension characteristics for improving the Floor Smooth Road Shake (SRS) performance which is one of the most important ride metrics in modern vehicles. The SRS Metric is formed by two driver interfaces: steering hands lateral, SHY, and Floor Pan Vibrations caused by tire imbalance forces. Even though the floor pan longitudinal and vertical vibrations are much smaller than the steering wheel lateral vibration, this study focuses on the floor SRS since drivers get affected by floor SRS. We performed the fundamental dynamics simulation of SRS by using ADAMS solver based on Motionview with in-house templates and objective measurement. Also this paper explains the dominant factor for enhancing the floor smooth road shake performance and design recommendations.