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송민우(Min Woo Song),김태형(Tae-Hyung Kim),김양수(Yang-Su Kim),최현열(Hyun-Yul Cho),김헌영(Heon Young Kim) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
Installed in the rear side of an automobile, the rear trailing arm absorbs the external forces inflicted on the tire and thereby improves the ride quality. High strength and durability are prerequisite to the rear trailing arm and each automobile maker has its own evaluation method. This paper has adopted the approach of a numerical analysis in order to figure out a method for strength analysis and for performance enhancement of the rear trailing arm. The rubber bush fitted into the rear trailing arm can be described by use of solid elements. However, this approach requires modeling and analyzing, and therefore is time-consuming. For that reason, we have decided to formulate a finite element model using 1D element. 1D element has been expressed in stiffness of each direction. Its reliability has been confirmed by the comparison of the tests and the analyses. In addition, since the rear trailing arm absorbs the buckling impact while an automobile is in motion, we have appraised the quality of the currently mass-produced products through the test of the buckling impact on and the analysis of the strength of a unit.