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Effect of the Main Structure Stiffness on the Frontal Collision Behavior  

Kim, Chon-Wook (연세대학교 기계공학부)
Han, Byoung-Kee (홍익대학교 기계.시스템디자인공학과)
Kim, Jong-Chan (현대자동차 승용 차체설계 1팀)
Jung, Hoon (르노삼성자동차 충돌환경팀)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.10, no.4, 2002 , pp. 234-241 More about this Journal
Abstract
In this study, the car crash analysis that simulates the crushing behavior of car forestructure during a frontal impact is carried out. The analysis model for front impact of a car consists of the lumped mass and the spring model. The characteristics value of masses and springs is obtained from the static analysis of a target car. The deceleration-time curve obtained from the simulation are compared with NCAP test data from the NHTSA. They show a good agreement with frontal crash test data. The deceleration-time curve of passenger compartment is classified into 3 stages; beginning stage, middle stage, and last stage. And the behavior of masses at each stage is explained. The effect of stiffness variation on deceleration of passenger compartment is resolved. The maximum loaded peak-time of torque box and dash is the main factor to control the passenger compartment's maximum deceleration.
Keywords
Lumped mass spring model; Deceleration time curve; Characteristics of deceleration time curve; Frontal collision; Stiffness of member;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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