Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Kinematic Design Sensitivity Analysis of Suspension systems Using Direct differentiation

직접미분법을 이용한 현가장치의 기구학적 민감도해석

  • 민현기 (대우자동차) ;
  • 탁태오 (정회원, 강원대학교 기계공학과) ;
  • 이장무 (정회원, 서울대학교 기계설계고학과)
  • Published : 1997.01.01
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Abstract

A method for performing kinematic design sensitivity analysis of vehicle suspension systems is presented. For modeling of vehicle suspensions, the multibody dynamic formulation is adopted, where suspensions are assumed as combination of rigid bodies and ideal frictionless joints. In a relative joint coordinate setting, kinematic constraint equations are obtained by imposing cut-joints that transform closed-loop shape suspension systems into open-loop systems. By directly differentiating the constraint equations with respect to kinematic design variables, such as length of bodies, notion axis, etc., sensitivity equations are derived. By solving the sensitivity equations, sensitivity of static design factors that can be used for design improvement, can be obtained. The validity and usefulness of the method are demonstrated through an example where kinematic sensitivity analysis of a MacPherson strut suspension of performed.

Keywords

References

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