Non-integer viscoelastic constitutive law to model soft biological tissues to in-vivo indentation

Date

2014-01-01

Author

Demirci, Nagehan
Tönük, Ergin

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Purpose: During the last decades, derivatives and integrals of non-integer orders are being more commonly used for the description of constitutive behavior of various viscoelastic materials including soft biological tissues. Compared to integer order constitutive relations, non-integer order viscoelastic material models of soft biological tissues are capable of capturing a wider range of viscoelastic behavior obtained from experiments. Although integer order models may yield comparably accurate results, non-integer order material models have less number of parameters to be identified in addition to description of an intermediate material that can monotonically and continuously be adjusted in between an ideal elastic solid and an ideal viscous fluid.

Subject Keywords

Fractional calculus, Indentation tests, Inverse finite element analysis, Soft tissue constitutive relation, Viscoelasticity

URI

https://hdl.handle.net/11511/40379

Collections

Department of Mechanical Engineering, Article