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Shape Optimal Design of Anti-Vibration Rubber Assembly to Reduce the Vibration of a Tractor Cabin

트랙터 캐빈의 진동저감을 위한 방진고무의 형상최적설계

  • Choi, Hyo-Joon (Electrical and Electronic Conversion System Engineering, Keimyung University) ;
  • Lee, Sang-Hoon (Department of Mechanical and Automotive Engineering, Keimyung University)
  • 최효준 (계명대학교 전기전자융합시스템공학과) ;
  • 이상훈 (계명대학교 기계자동차공학)
  • Received : 2018.01.18
  • Accepted : 2018.04.06
  • Published : 2018.04.30

Abstract

In this study, shape optimization was performed to improve the vibration isolation capability of an anti-vibration rubber assembly, which is used in the field option cabin of agricultural tractors. A uniaxial tension test and biaxial tension test were performed to characterize the hyper-elastic material properties of rubber, and the data were used to calibrate the material model used in the finite element analyses. A field test was performed to quantify the input excitation from the tractor and the output response at the cabin frame. To account for the nonlinear behavior of rubber, static analyses were performed and the load-displacement curve of rubber was derived. The stiffness of the rubber was calculated from this curve and input to the harmonic analyses of the cabin. The results were verified using the test data. Taguchi's parameter design method was used to find the optimal shape of the anti-vibration rubber assembly, which indicated a shape with reduced stiffness. The vibration of the cabin frame was reduced by the optimization by as much as 35% compared to the initial design.

Keywords

Vibration isolation;Harmonic analysis;Rubber;Taguchi method;Optimization

Acknowledgement

Supported by : (주)삼우농기

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