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Elastic model for crimped collagen fibrilsA physiologic constitutive expression is presented in algorithmic format for the nonlinear elastic response of wavy collagen fibrils found in soft connective tissues. The model is based on the observation that crimped fibrils in a fascicle have a three-dimensional structure at the micron scale that we approximate as a helical spring. The symmetry of this wave form allows the force/displacement relationship derived from Castigliano's theorem to be solved in closed form: all integrals become analytic. Model predictions are in good agreement with experimental observations for mitral-valve chordae tendinece.
Document ID
20050231895
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Freed, Alan D.
(NASA Glenn Research Center Cleveland, OH United States)
Doehring, Todd C.
Date Acquired
August 23, 2013
Publication Date
August 1, 2005
Publication Information
Publication: Journal of biomechanical engineering
Volume: 127
Issue: 4
ISSN: 0148-0731
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: HL 72598
Distribution Limits
Public
Copyright
Other
Keywords
Evaluation Studies

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