Skip to main navigation Skip to search Skip to main content

Analysis of the effect of a compliant layer on indentation of an elastic material

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Considering the possible effect of the thin protein-rich sheath on the indentation deformation of an enamel rod, we analyzed the indentation response of an elastic cylinder with a compliant layer between the cylinder and rigid-surrounding material. For the film thickness much less than the characteristic dimension of the cylinder, closed-form solutions were obtained between the indentation load and the indentation depth, which depends on the film thickness and the ratio of the Young's modulus of the cylinder to the Young's modulus of the film. The finite element results supported the relationships for the ratio of the film thickness to the characteristic dimension of the cylinder less than or equal to 1/3. The indentation load required to produce the same indentation displacement decreases with increasing the ratio of the Young's modulus of the cylinder to the Young's modulus of the film for compressible-elastic films. Incompressible-elastic films have no significant effect on the indentation response of the elastic cylinder.

Original languageEnglish
Pages (from-to)33-40
Number of pages8
JournalJournal of the Mechanical Behavior of Biomedical Materials
Volume25
DOIs
StatePublished - Sep 2013

Bibliographical note

Funding Information:
The authors are grateful for the supports provided by The National High Technology Research and Development Program of China ( 2012AA040106 ), National Key Technology R&D Program ( 2011BAK06B03 ) and the Natural Science Foundation of Shanghai ( 11JC1403200 ).

Funding

The authors are grateful for the supports provided by The National High Technology Research and Development Program of China ( 2012AA040106 ), National Key Technology R&D Program ( 2011BAK06B03 ) and the Natural Science Foundation of Shanghai ( 11JC1403200 ).

FundersFunder number
National High Technology Research and Development Program of China2012AA040106
National Key Program for Science and Technology Research and Development2011BAK06B03
Natural Science Foundation of Shanghai11JC1403200
Natural Science Foundation of Shanghai

    Keywords

    • Compressible film
    • Elastic cylinder
    • Incompressible film
    • Indentation

    ASJC Scopus subject areas

    • Biomaterials
    • Biomedical Engineering
    • Mechanics of Materials

    Fingerprint

    Dive into the research topics of 'Analysis of the effect of a compliant layer on indentation of an elastic material'. Together they form a unique fingerprint.

    Cite this