A poroviscohyperelastic model for numerical analysis of mechanical behavior of single chondrocyte

Abstract

The aim of this paper is to use a poroviscohyperelastic (PVHE) model, which is developed based on the porohyperelastic (PHE) model to explore the mechanical deformation properties of single chondrocytes. Both creep and relaxation responses are investigated by using finite element analysis models of micropipette aspiration and atomic force microscopy experiments, respectively. The newly developed PVHE model is compared thoroughly with the standard neo-Hookean solid and PHE models. It has been found that the PVHE can accurately capture both creep and stress relaxation behaviors of chondrocytes better than other two models. Hence, the PVHE is a promising model to investigate mechanical properties of single chondrocytes.

Keywords::

• porohyperelastic
• poroviscohyperelastic
• chondrocyte
• finite element analysis
• biomechanics

Acknowledgements

This work was performed in part at the Queensland node of the Australian National Fabrication Facility (ANFF), a company established under the National Collaborative Research Infrastructure Strategy to provide nano- and micro-fabrication facilities for Australia's researchers. The authors would like to thank Dr Sanjleena Singh for advices in modeling of experiments.

Conflict of interest disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This research was funded by ARC Future Fellowship project [FT100100172] and QUT Postgraduate Research Scholarship.