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Efficient and optimized identification of generalized Maxwell viscoelastic relaxation spectra
Behzad Babaei1, Ali Davarian2, Kenneth M Pryse3
1Department of Mechanical Engineering & Materials Science, Washington University in St. Louis, St. Louis, MO, USA.
Journal of the Mechanical Behavior of Biomedical Materials
|November 3, 2015
Summary
This study introduces an efficient algorithm for quickly identifying viscoelastic relaxation spectra from complex biological tissue tests. The new method overcomes computational challenges, enabling better mechanical response predictions.
Area of Science:
- Materials Science
- Biomechanics
- Computational Modeling
Background:
- Viscoelastic relaxation spectra are crucial for understanding material and structural mechanical behavior.
- Estimating these spectra for biological tissues typically requires computationally intensive viscoelastic relaxation tests.
- The inverse problem in interpreting these tests presents significant computational expense.
Purpose of the Study:
- To develop and present an efficient algorithm for the rapid identification of viscoelastic relaxation spectra.
- To assess the algorithm's performance, robustness, limitations, and strengths using trial data.
- To apply the algorithm to characterize the viscoelastic response of biological materials like reconstituted collagen.
Main Methods:
- Development of a novel, efficient algorithm for identifying viscoelastic relaxation spectra.
- Validation of the algorithm through testing against existing trial data.
- Application of the validated algorithm to analyze reconstituted collagen samples.
Main Results:
- The developed algorithm enables rapid identification of viscoelastic relaxation spectra.
- Algorithm testing confirmed its robustness and provided insights into its operational characteristics.
- Application to reconstituted collagen revealed a broad distribution of viscoelastic time constants.
Conclusions:
- The efficient algorithm significantly reduces the computational burden of determining viscoelastic relaxation spectra.
- This advancement facilitates more accessible and rapid characterization of viscoelastic properties in materials, particularly biological tissues.
- The study successfully identified the complex viscoelastic behavior of reconstituted collagen.
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