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Experimental and Finite Element Analysis of Large-Strain Indentation of Polymeric Solids

[+] Author Affiliations
Y. C. Lu

University of Kentucky, Paducah, KY

D. M. Shinozaki

University of Western Ontario, London, ON, Canada

Paper No. IMECE2007-44031, pp. 497-500; 4 pages
  • ASME 2007 International Mechanical Engineering Congress and Exposition
  • Volume 10: Mechanics of Solids and Structures, Parts A and B
  • Seattle, Washington, USA, November 11–15, 2007
  • Conference Sponsors: ASME
  • ISBN: 0-7918-4304-1 | eISBN: 0-7918-3812-9
  • Copyright © 2007 by ASME


The large-strain indentation test has been examined using experimental testing and finite element simulation on various engineering polymers. Cylindrical, flat-ended tips with diameter range from 10μm–100μm are used. In the large-strain region, the indentation stress-displacement curve shows linear response from which the mean indentation stress is extrapolated. The mechanism of large-strain indentation has been investigated through optical microscope and finite element simulations. Once a critical indentation depth is reached, the plastic zone surrounding the indenter remains constant.

Copyright © 2007 by ASME



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