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A Study on Durability of Under Bar at Car through Structural and Fatigue Analysis

자동차 언더바의 구조 및 피로해석을 통한 내구성 연구

  • Received : 2014.10.09
  • Accepted : 2015.01.28
  • Published : 2015.04.30

Abstract

This study investigated the durability of the under bar of a car through structural and fatigue analysis. Model 1 had the lowest value among three kinds of models. In the case of the maximum equivalent stress and displacement at structural analysis, model 1 showed the highest durability. Also, models 3 and 2 showed structural durability in order of this value. In the case of fatigue analysis, the maximum fatigue lives of the three models were equal to $2{\times}10^7$cycles. However, model 1 showed the highest value among the three models, as the minimum fatigue life of model 1 becames 92.56 cycles. Also models 3 and 2 showed fatigue durability in order of this value. The maximum possibility of fatigue damage for models1,2,and 3 became 30%. If the results of this study are applied to change the design shape of the under bar of cars, the ride comfort for automobile passengers and car durability can be improved.

Keywords

Under bar;Fatigue life;Fatigue damage;Damage possibility;Durability

References

  1. Kim, J. K., Jang, B. H., Park, Y. C. and Lee, K. H., "Durability Evaluation of Automobile Control Arm", Journal of KSMPE, Vol. 11, No. 4, pp. 168-172, 2012.
  2. Han, M. S. and Cho, J. U., "Structural and Fatigue Analysis on Shock Absorber Mount of Automobile", Journal of KSMPE, Vol. 11, No. 1, pp. 125-133, 2012.
  3. Kang. G. H. and Kim. C. S., "Damping Characterization of the Double-skin Aluminum Extruded Panels for Rolling Stock Carbody", Journal of KAIS, vol. 14, No. 7, pp. 3197-3202, 2013.
  4. Kim, H. Y., Lee, S. K. and Shin, Y. J., "Analyses of Deployment Process and Sled Test for Designing Airbag Module", Transactions of KSAE, pp.118-128, 1998.
  5. Kim, A. K., Tunvir, K., Park, S. J., Jeong, G. D., Hasan, M. A. and Cheon, S. S.,"Study on Compressive Behavior of Heterogeneous Al-alloy Foam by Cruciform-Hemisphere Model", Modelling and Simulation in Materials Science and Engineering, Vol. 14, Issue 6, pp. 933, 2006. https://doi.org/10.1088/0965-0393/14/6/004
  6. Kwon, H. H., Moon, K. J., and Song, S. E., "Forging Process Analysis of the Multi-forging Die for the United Universal Pipe Joint of the Intermediate Shaft," Journal of KSMTE, Vol. 19, No. 1, pp. 33-41, 2010.
  7. Lee, Y. S., Jun, B. H. and Oh, J. M.,"A Study on the Design Optimization of Composite Cylindrical Shells with Vibration, Buckling Strength and Impact Strength Characteristics", Transaction of KSAE, Vol.5, No. 4, pp. 48-69, 1997.

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