Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Effect of the Main Structure Stiffness on the Frontal Collision Behavior

차체 추요 부재의 강성이 정면 충돌 거동에 미치는 영향

  • 김천욱 (연세대학교 기계공학부) ;
  • 한병기 (홍익대학교 기계.시스템디자인공학과) ;
  • 김종찬 (현대자동차 승용 차체설계 1팀) ;
  • 정훈 (르노삼성자동차 충돌환경팀)
  • Published : 2002.07.01
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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

References

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