Design of high stiffness and lightweight body for stiffness distribution ratio

강성 배분비를 괴려한 고강성 경량화 차체 설계

  • 양희종 (국민대학교 자동차전문 대학원) ;
  • 김기창 (현대 자동차) ;
  • 임홍재 (국민대학교 기계자동차공학부) ;
  • 김찬묵 (국민대학교 기계자동차공학부)
  • Published : 2006.11.16

Abstract

Lightweight body can cause a low stiffness due to the decrease of panel thickness and reinforcing member. The other way, high stiffness body demands an increase of mass. Front pillar section area is decreased due to driver's visual field. Global vehicle stiffness is affected by stiffness distribution ratio between upper part and lower part at side body structure. This paper will describe a process used to evaluate the stiffness distribution ratio based on research of strain energy analysis of the tip rotation method. In addition, optimum design schemes are presented for high stiffness and lightweight body structure considering the investigated stiffness distribution ratio. In this way the designer will be aided by a defined design guide and a set of supporting tool to help him work towards a good design