A study on damage to mechanical seat cushion made from different materials of extension frame

  • Authors

    • Jae Won Kim
    • Jae Ung Cho
    • Chan Ki Cho
    • Jin Oh Kim
    2018-06-08
    https://doi.org/10.14419/ijet.v7i2.33.14176
  • Seat Frame, Cushion Extension, Fatigue, Equivalent Stress, Passenger
  • Background/Objectives: : Automotive seat is a very important component to prevent accidents by reducing passenger’s tiredness, thus, this study worked on analyzing damage with different materials of extension frames of mechanical seat cushions.

    Methods/Statistical analysis: In this study, we performed an experiment on cushion extension frames by splitting it into two parts. We studied about the damage prediction of slave body for each material property of ABS, PP, PLA, and PA6.6. For analyzing the condition, we assigned the side part of the master body for fixed support, and we progressed on analysis by applying with 690N on the entire part of the slave body.

    Findings: This research worked on the study of damage to different materials of extension frames of seat cushions. After confirming the stress equivalence of the entire model for each material, PP showed the highest equivalent stress of 180.88MPa, and ABS showed the lowest equivalent stress of 151.73MPa. Overall, we could see that in the order of ABS, PA6.6, PLA, PP have a higher tendency to be broken. In addition, when confirming equivalent stress of master body depending on materials of slave body, PA6.6 showed the highest equivalent stress of 166.3MPa, and ABS showed the lowest equivalent stress of 124.06MPa. Overall, we could see that in the order of ABS, PP, PLA and PP6.6 have a higher tendency to be broken. In comparing shear stress on the gear part, which has the highest tendency to be broken in among the entire model, depending on the material of the slave body, PLA showed the greatest shear stress of 88.945MPa, and ABS showed the lowest shear stress of 69.766MPa.

    Improvements/Applications: This study worked for the improvements and applications of cushion extension frames as the securement of material by investigating these factors.

     

     

  • References

    1. [1] Heo, U., Kim, S. K., Song, M. J., Yang, I. Y. &Im, K. H., (2011). Effectiveness evaluation for seat parts by seat belt anchorage strength analysis. International Journal of Precision Engineering and Manufacturing, 12(6), 1031-1034.

      [2] Jo, H. C. & Kim, Y. E. (2009). A study on the influence of the seat and head restraint foam stiffnesses on neck injury in low speed offset rear impacts. International Journal of Precision Engineering and Manufacturing, 10(2), 105–110

      [3] Kim, H. S., Lee, Y. S., Yang, S. M. & Kang, H. Y., (2016). Structural analysis on variable characteristics of automotive seat frame by FEA. International Journal of Precision Engineering and Manufacturing-Green Technology, 3(1), 75-79.

      [4] Jung, K. W., Kawahito, Y. & Katayama, S. (2014).Mechanical Property and Joining Characteristics of Laser Direct Joining of CFRP to Polyethylene Terephthalate. International Journal of Precision Engineering and Manufacturing-Green Technology,1(1), 43–48.

      [5] Kim, J. H., Ra, S. W., Kim, H. S. & Kim, J. H. (2015). On Clamping Force Characteristics in M1.4, Subminiature Screw for CFRP Stacking Angles. International Journal of Precision Engineering and Manufacturing, 32(6), 517–521.

      [6] Brogioli, M., Gobbi, M., Mastinu, G. & Pennati, M. (2011). Parameter Sensitivity Analysis of a Passenger/Seat Model for Ride Comfort Assessment. Experimental Mechanics, 51(8), 1237-1249.

      [7] Yang,J. T., Choi,H. Y., Lee,J. H.& Lee,S. U. (2014). Empirical analysis on the effect of design variables of automotive seat lumbar support on the initial sitting discomfort. International Journal of Automotive Technology, 15(4), 667–672

      [8] Yang, J. Y. & Jeon, S. S. Analytical models for the initial stiffness and plastic moment capacity of an unstiffened top and seat angle connection under a shear load, International Journal of Steel Structures, 2009, 9(3), pp. 195-205.

      [9] Jo, H. C. & Kim, Y. E. (2009). A study on the influence of the seat and head restraint foam stiffnesses on neck injury in low speed offset rear impacts. International Journal of Precision Engineering and Manufacturing, 10(2), 105-110.

      [10] Zheng, E., Fan, Y., Zhu, R., Zhu, Y. & Xian. J. (2016). Prediction of the vibration characteristics for wheeled tractor with suspended driver seat including air spring and MR damper. Journal of Mechanical Science and Technology, 30(9), 4143-4156.

      [11] Park, D. W. & Yoo, W. S. (2009). A study on the design of a child seat system with mutipoint restraints to enhance safety. Journal of Mechanical Science and Technology, 23(12), 3316-3322.

      [12] Song, Y. J., Yang, I. Y., Im, K. H., Ma, Z., Zhao, H., Lu, S., Li, H.& Liu, C. (2016). Method for determining the true stress of cross-shaped specimens subjected to biaxial tensile loads. Instruments and Experimental Techniques, 59 (2), 287–293.

      [13] Mizuno, K., Iwata, K.,Namikiri, T. & Tanaka, N. (2006). FE Analysis of Human Model and Crash Dummy Response in Various Child Restraint Systems. Transactions of the Society of Automotive Engineers of Japan, 37(6), 193–198.

      [14] Mao, J., Wang, W., Zhang, J. & Liu, Y. (2015). Numerical investigation on the dynamic behaviors of turbine valve disc-seat impact at low velocity. Journal of Mechanical Science and Technology, 29(2), 507-515.

      [15] Zhang, Y., Jiang, S., Zhao, Y. & Shan, D. (2014). Isothermal precision forging of aluminum alloy ring seats with different preforms using FEM and experimental investigation. The International Journal of Advanced Manufacturing Technology, 72(9-12), 1693-1703.

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    Won Kim, J., Ung Cho, J., Ki Cho, C., & Oh Kim, J. (2018). A study on damage to mechanical seat cushion made from different materials of extension frame. International Journal of Engineering & Technology, 7(2.33), 315-318. https://doi.org/10.14419/ijet.v7i2.33.14176