期刊
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
卷 55, 期 -, 页码 32-41出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmbbm.2015.10.008
关键词
Relaxation spectrum; Viscoelastic model identification; Generalized Maxwell model; Maxwell-Wiechert model; Collagen
资金
- National Institutes of Health [R01HL109505]
- National Science Foundation [U01EB016422]
Viscoelastic relaxation spectra are essential for predicting and interpreting the mechanical responses of materials and structures. For biological tissues, these spectra must usually be estimated from viscoelastic relaxation tests. Interpreting viscoelastic relaxation tests is challenging because the inverse problem is expensive computationally. We present here an efficient algorithm that enables rapid identification of viscoelastic relaxation spectra. The algorithm was tested against trial data to characterize its robustness and identify its limitations and strengths. The algorithm was then applied to identify the viscoelastic response of reconstituted collagen, revealing an extensive distribution of viscoelastic time constants. (C) 2015 Elsevier Ltd. All rights reserved.
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