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TECHNICAL PAPERS

The Role of Flow-Independent Viscoelasticity in the Biphasic Tensile and Compressive Responses of Articular Cartilage

[+] Author and Article Information
Chun-Yuh Huang, Van C. Mow, Gerard A. Ateshian

Departments of Mechanical Engineering and Biomedical Engineering, Columbia University, New York, NY 10027

J Biomech Eng 123(5), 410-417 (May 16, 2001) (8 pages) doi:10.1115/1.1392316 History: Received December 13, 2000; Revised May 16, 2001
Copyright © 2001 by ASME
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References

Figures

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Uniaxial tensile response of the biphasic-CLE-QLV and biphasic-CLE models, to a step strain of ε0=0.10 (10 percent), as derived from Eq. (13) by numerical inverse Laplace transformation
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Dynamic modulus versus frequency under uniaxial tensile loading, for the biphasic-CLE-QLV and biphasic-CLE models: (a) magnitude; (b) phase angle. In the limit of high frequencies, the magnitude of the dynamic modulus is given by E+Y0+ in Eq. (16), whereas at low frequencies it is given by E+Y in Eq. (17)
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Unconfined compression stress-relaxation response of the biphasic-CLE-QLV and biphasic-CLE models, to a ramp strain of magnitude ε0=0.10 (10 percent), and for three different ramp times (t0=3 s, 150 s, and 300 s), as derived from Eq. (13) by numerical inverse Laplace transformation
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Dynamic modulus versus frequency under unconfined compression loading, for the biphasic-CLE-QLV and biphasic-CLE models: (a) magnitude; (b) phase angle. In the limit of high frequencies the magnitude of the dynamic modulus is given by E−Y0+ in Eq. (16), whereas at low frequencies it is given by E−Y in Eq. (17)
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Typical experimental equilibrium tensile and compressive responses of human humeral head articular cartilage from the superficial and middle zones (55 y.o. male). The tensile response is measured from long prismatic samples with rectangular cross section, harvested parallel to the surface, along the split line direction; the compressive response is measured from cylindrical plugs harvested normal to the articular surface 34.
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Experimental uniaxial tensile response of the superficial zone specimen of Fig. 5 to a ramp strain of ε0=0.02 (2 percent) and ramp time of t0=1 s, as a function of time
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Typical experimental unconfined compression stress-relaxation response of bovine glenohumeral articular cartilage, to a ramp strain of magnitude ε0=0.05 (5 percent), and for two different ramp times (t0=0.126 s and t0=400 s)

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