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Soft tissue modelling with conical springs

Issue title: Frontiers in Biomedical Engineering and Biotechnology – Proceedings of the 4th International Conference on Biomedical Engineering and Biotechnology, 18–21 August 2015, Shanghai, China

Guest editors: Feng Liu, Dong-Hoon Lee, Ricardo Lagoa and Sandeep Kumar

Article type: Research Article

Authors: Omar, Nadzeria; * | Zhong, Yongmina | Jazar, Reza N.a | Subic, Aleksandarb | Smith, Julianc | Shirinzadeh, Bijand

Affiliations: [a] School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, PO Box 71, Bundoora, VIC 3083, Australia | [b] Swinburne Research & Development, Swinburne University of Technology, Hawthorn, VIC 3122, Victoria, Australia | [c] Monash Medical Centre, Monash University, Clayton, VIC 3168, Australia | [d] Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia

Correspondence: [*] Address for correspondence: Nadzeri Omar, School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, PO Box 71, Bundoora, VIC 3083, Australia. Tel.: +613 9925 6018; Fax: +613 9925 6108; E-mail: [email protected].

Keywords: Soft tissue modelling, tissue deformation patterns, stiffness variation, conical spring

DOI: 10.3233/BME-151307

Journal: Bio-Medical Materials and Engineering, vol. 26, no. s1, pp. S207-S214, 2015

Published: 2015
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This paper presents a new method for real-time modelling soft tissue deformation. It improves the traditional mass-spring model with conical springs to deal with nonlinear mechanical behaviours of soft tissues. A conical spring model is developed to predict soft tissue deformation with reference to deformation patterns. The model parameters are formulated according to tissue deformation patterns and the nonlinear behaviours of soft tissues are modelled with the stiffness variation of conical spring. Experimental results show that the proposed method can describe different tissue deformation patterns using one single equation and also exhibit the typical mechanical behaviours of soft tissues.

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