연구논문집

Korea Institute of Machinery & Materials (한국기계연구원)
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A Study on the Design Technology for Automobile Front Subframe Module

자동차 프런트 서브프레임 모듈 설계기술에 대한 연구

  • 최병익 (한국기계연구원 구조연구부 마이크로응용역학그룹) ;
  • 김완두 (한국기계연구원 구조연구부 마이크로응용역학그룹) ;
  • 이학주 (한국기계연구원 구조연구부 마이크로응용역학그룹) ;
  • 강재윤 (한국기계연구원 구조연구부 마이크로 응용역학그룹) ;
  • 김정엽 (한국기계연구원 구조연구부 마이크로응용역학그룹) ;
  • 우창수 (한국기계연구원 구조연구부 마이크로응용역학그룹) ;
  • 한승우 (한국기계연구원 구조연구부 마이크로응용역학그룹) ;
  • 김주성 (쌍용자동차 CAE팀) ;
  • 김기주 (쌍용자동차 CAE팀)
  • Published : 2002.12.20
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Abstract

Even in the world wide automobile companies where a few simple modules are put into practical use, the front subframe modules of which performances of durability, NVH and crash are significantly important are under planing. In this study, design technology for the automobile front subframe module, which consists of an engine, a transmission and steering parts, structural components (frame, upper arm, lower arm and brake etc.) and rubber components(engine mount, axle mount and rubber disc etc.), was developed. A FEM-based analytical approach was used to evaluate the multiaxial high cycle fatigue damage of the front subframe module. Strain-life fatigue database system and expert system for fatigue properties of welded materials were developed. Stiffness values of the various rubber bushes mounted on the front subframe were evaluated by experimental method and FEM. TWB(Tailor Welded Blank) technology was applied to forming the cross member of the front subframe. Performance evaluations in relation to NVH and crash were conducted by using CAE technologies.

Keywords