Viscoelastic properties of wet and dry human compact bone were studied in torsion and in bending for both the longitudinal and transverse directions at frequencies from 5 mHz to 5 kHz in bending to more than 50 kHz in torsion. Two series of tests were done for different longitudinal and transverse specimens from a human tibia. Wet bone exhibited a larger viscoelastic damping tan δ (phase between stress and strain sinusoids) than dry bone over a broad range of frequency. All the results had in common a relative minimum in tan δ over a frequency range, 1 to 100 Hz, which is predominantly contained in normal activities. This behavior is inconsistent with an optimal “design” for bone as a shock absorber. There was no definitive damping peak in the range of frequencies explored, which could be attributed to fluid flow in the porosity of bone. [S0148-0731(00)00102-3]
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April 2000
Technical Papers
Viscoelastic Dissipation in Compact Bone: Implications for Stress-Induced Fluid Flow in Bone
Roderic Lakes,
Roderic Lakes
Department of Engineering Physics and Department of Biomedical Engineering, University of Wisconsin—Madison, 147 ERB, 1500 Engineering Dr., Madison, WI 53706-1687
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Taeyong Lee,
Taeyong Lee
Department of Biomedical Engineering, University of Wisconsin—Madison, 147 ERB, 1500 Engineering Dr., Madison, WI 53706-1687
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Colby Swan,
Colby Swan
Department of Civil and Environmental Engineering, University of Iowa, Iowa City, IA 52242
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Richard Brand
Richard Brand
Department of Orthopaedic Surgery, University of Iowa, Iowa City, IA 52242
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Elijah Garner
John Deere, Inc.
Roderic Lakes
Department of Engineering Physics and Department of Biomedical Engineering, University of Wisconsin—Madison, 147 ERB, 1500 Engineering Dr., Madison, WI 53706-1687
Taeyong Lee
Department of Biomedical Engineering, University of Wisconsin—Madison, 147 ERB, 1500 Engineering Dr., Madison, WI 53706-1687
Colby Swan
Department of Civil and Environmental Engineering, University of Iowa, Iowa City, IA 52242
Richard Brand
Department of Orthopaedic Surgery, University of Iowa, Iowa City, IA 52242
Contributed by the Bioengineering Division for publication in the JOURNAL OF BIOMECHANICAL ENGINEERING. Manuscript received by the Bioengineering Division March 9, 1999; revised manuscript received November 30, 1999. Associate Technical Editor: T. M. Keaveny.
J Biomech Eng. Apr 2000, 122(2): 166-172 (7 pages)
Published Online: November 30, 1999
Article history
Received:
March 9, 1999
Revised:
November 30, 1999
Citation
Garner, E., Lakes, R., Lee, T., Swan, C., and Brand, R. (November 30, 1999). "Viscoelastic Dissipation in Compact Bone: Implications for Stress-Induced Fluid Flow in Bone ." ASME. J Biomech Eng. April 2000; 122(2): 166–172. https://doi.org/10.1115/1.429638
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