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. Author manuscript; available in PMC: 2013 Apr 5.
Published in final edited form as: J Biomech. 2012 Jan 28;45(6):1036–1041. doi: 10.1016/j.jbiomech.2011.12.019

Figure 4.

Figure 4

Effective contact modulus and fluid load fraction from indentation at 7.7 µm/s. Effective contact modulus (a) and fluid load fraction (b) did not vary significantly with indentation depth, contact radius or force during non-equilibrium indentation (depth, contact radius, and force are interdependent). The equilibrium contact modulus, Ec0, is shown for reference (a). Agbezuge and Deresiewicz, 1974, predicted the limiting Hertzian contact response for a linear poroelastic material (a, b).