Advertisement

Journal of Mechanical Science and Technology

, Volume 32, Issue 11, pp 5279–5283 | Cite as

FE analysis of refrigerator drop test and the optimization of lower hinge geometry using equivalent static load method

  • Minsoo Kim
  • Seokmoo Hong
Article
  • 6 Downloads

Abstract

To accurately predict deformations caused by an impact when a refrigerator is dropped during transport, the material model should consider the strain rates in the lower half of the refrigerator (particularly its hinges and cushions). However, dynamic finite element (FE) analysis is computationally expensive, especially when optimization schemes to minimize deformations are operated. This study reveals that, by applying the equivalent static load method, it is possible, with only one FE analysis, to obtain the load distribution that can be obtained via dynamic analysis. Based on the equivalent static load method, an optimization method is established and used to minimize hinge deformations. Comparing the results obtained by using the proposed method with the actual drop test results, we observe that the minimum hinge deformations are similar. This indicates that, by applying this FE-based optimization approach, computational costs can be reduced drastically.

Keywords

Drop/impact test Dynamic finite element method Equivalent static load Lower hinge Reverse engineering 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    S. Goyal and E. K. Buratynski, Methods for realistic droptesting, International Journal of Microcircuits and Electronic Package, 23 (1) (2000) 45–52.Google Scholar
  2. [2]
    C. T. Lim, Y. M. Teo and V. P. W. Shim, Numerical simulation of the drop impact response of a portable electronic product, IEEE Transactions on Components and Packaging Technologies, 25 (3) (2002) 478–485.CrossRefGoogle Scholar
  3. [3]
    S. K. W. Seah, C. T. Lim, E. H. Wong, V. B. C. Tan and V. P. W. Shim, Mechanical response of PCBs in portable electronic products during drop impact, The 4th Electronic Package Technology Conference (2002) 120–125.Google Scholar
  4. [4]
    M. Bossak and J. Kaczkowski, Global/local analysis of composite light aircraft crash landing, Computers and Structures, 81 (8–11) (2003) 503–514.CrossRefGoogle Scholar
  5. [5]
    K. H. Low, Y. Wang, K. H. Hoon and W. K. Wai, A virtual boundary model for a quick drop–impact analysis of electronic components in TV model, Advanced in Engineering Software, 35 (8–9) (2003) 537–551.Google Scholar
  6. [6]
    Y. Y. Wang, C. Lu, J. Li, X. M. Tan and Y. C. Tse, Simulation of drop/impact reliability for electronic devices, Finite Element in Analysis and Design, 41 (6) (2005) 667–680.CrossRefGoogle Scholar
  7. [7]
    C. Y. Zhou, T. X. Yu and R. S. W. Lee, Drop/impact tests and analysis of typical portable electronic devices, International Journal of Mechanical Sciences, 50 (5) (2008) 905–917.CrossRefGoogle Scholar
  8. [8]
    T. T. Mattila, L. Vajavaara, J. Hokka, E. Hussa, M. Mäkelä and V. Halkola, Evaluation of the drop response of handheld electronic products, Microelectronics Reliability, 54 (3) (2014) 601–609.CrossRefGoogle Scholar
  9. [9]
    U. J. Jung, J. J. Lee and G. J. Park, A preliminary study on the optimal shape design of the axisymmetric forging component using equivalent static loads, Transactions Korean Society Mechanical Engineering A, 35 (1) (2011) 1–10.CrossRefGoogle Scholar
  10. [10]
    G. A. Da Silva and E. L. Cardoso, Stress–based topology optimization of continuum structures under uncertainties, Computer Methods in Applied Mechanics and Engineering, 313 (2017) 647–672.MathSciNetCrossRefGoogle Scholar
  11. [11]
    S. Hong, Y. C. Choi, S. W. Eom, H. L. Kim and H. C. Hyun, Finite element analysis of dynamic deformation of refrigerator’s lower hinge during drop test, Transactions Korean Society Mechanical Engineering C, 3 (1) (2015) 37–44.Google Scholar
  12. [12]
    J. O. Hallquist, LS–DYNA keyword user’s manual, Version 971, Livermore Software and Technology Corporation, Livermore, CA, USA (2007).Google Scholar
  13. [13]
    N. Stander, W. Roux, T. Goel, T. Eggleston and K. Craig, LS–OPT User’s manual–a design optimization and probabilistic analysis tool for the engineering analyst, Version 5.2, Livermore Software and Technology Corporation, Livermore, CA, USA (2015).Google Scholar

Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringSogang UniversitySeoulKorea
  2. 2.Department of Mechanical and Automotive EngineeringKongju National UniversityCheonanKorea

Personalised recommendations