Experimental Mechanics

, Volume 44, Issue 4, pp 375–380 | Cite as

Experimental verification of drop/impact simulation for a cellular phone

  • J. G. Kim
  • Y. K. Park


Conducting drop tests to investigate impact behavior and identify failure mechanisms of small-size electronic products is generally expensive and time-consuming. Nevertheless, strict drop/impact performance criteria for hand-held electronic products such as cellular phones play a decisive role in the design because they must withstand unexpected shocks. The design of product durability on impact has heavily relied on the designer's intuition and experience. In this study, a reliable drop/impact simulation for a cellular phone is carried out using the explicit code LS-DYNA. Subsequently globallocal experimental verification is accomplished by means of high-speed photography and impact response measurement. Using this methodology, we predict potential damage locations in a cellular phone and compare them with real statistical data. It is envisaged that development of a reliable methodology of drop/impact simulation will provide us with a powerful and efficient vehicle for improvement of the design quality and reduction of the product development cycle.

Key Words

Drop/impact simulation cellular phone highspeed photography response acceleration measurement 


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  1. 1.
    Chung, W.J., Boo, S.W., Chun, S.P., andKim, D.C., “Impact Analysis of Electronic Products,”Transactions of KSME,35 (8),678–690 (1995).Google Scholar
  2. 2.
    Lye, S.W., Teo, M.Y., andLew, S.C., 1995, “A Study of Shock Characterization for Protective Packaging Design,”Journal of Materials Engineering and Performance,4,308–313.Google Scholar
  3. 3.
    Goyal, S., Papadopoulos, J.M., andSullivan, P.A., “Shock Protection of Portable Electronic Products: Shock Response Spectrum, Damage Boundary Approach, and Beyond,”Shock and Vibration,4 (3),169–191 (1997).Google Scholar
  4. 4.
    Goyal, S., Upasani, S., andPatel, D.M., “Improving Impact Tolerance of Portable Electronic Products: Case Study of Cellular Phones,”EXPERIMENTAL, MECHANICS,39 (1),43–52 (1999).CrossRefGoogle Scholar
  5. 5.
    Song, G., Yeh, C., and Wyatt, K., 1998, “Phone Drop Simulation and Effect of Small Variations of Drop Angle,” Proceedings of the 5th International LS-DYNA Users Conference, Detroit, MI.Google Scholar
  6. 6.
    LSTC, LS-DYNA Keyword User's Manual, Version 950, Livermore Software Technology Corporation (1999). Google Scholar
  7. 7.
    ANSYS, Inc., ANSYS/LS-DYAN User's Guide, USA (1998).Google Scholar

Copyright information

© Society for Experimental Mechanics 2004

Authors and Affiliations

  • J. G. Kim
    • 1
  • Y. K. Park
    • 1
  1. 1.School of Mechanical and Automotive EngineeringCatholic University of DaeguKyungsan CityRepublic of Korea

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