Modeling of soft tissue deformation using mass spring method with nonlinear volume force

Omar, Nadzeri and Nasrul Hadi, Johari and Mohd Hasnun Ariff, Hassan and Mohd Amzar, Azizan (2021) Modeling of soft tissue deformation using mass spring method with nonlinear volume force. In: Lecture Notes in Mechanical Engineering; Human Engineering Symposium, HUMENS 2021 , 22 February 2021 , Virtual Conference. pp. 75-90.. ISSN 2195-4356 ISBN 9789811641145

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Abstract

Soft tissues displayed two phases of deformation, linear behavior during small deformation and nonlinear behavior during large deformation. Mass Spring Method (MSM) is one of the preferred methods for simulating soft tissue deformations. MSM-based models provide simpler calculations that allow realtime interaction. However, only a small number of MSM models are capable of simulating two phases of soft tissue deformation. This study introduces a new approach to modeling the deformation. The conventional MSM model, which is governed by Hooke’s law, is coupled with the nonlinear volume force defined using the conical spring methodology. The nonlinear volume force is triggered by a change in volume in the structure of the MSM model. With the implementation, at small deformation where volume change is also small, only the Hooke’s law equation is activated resulting in linear deformation. Whereas, during large deformation, nonlinear deformation occurs as a result of a large change in the MSM volume. Analyzes conducted show that the proposed model can simulate the two phases of deformation. The proposed model can also control each phase independently, which shows that it has a high degree of flexibility on modeling various of soft tissue deformation.

Item Type:	Conference or Workshop Item (Lecture)
Additional Information:	Indexed by Scopus
Uncontrolled Keywords:	Nonlinear volume force; Mass Spring Method (MSM); Nonlinear deformation; Soft tissue simulation.
Subjects:	T Technology > TJ Mechanical engineering and machinery
Faculty/Division:	Faculty of Mechanical and Automotive Engineering Technology
Depositing User:	Pn. Hazlinda Abd Rahman
Date Deposited:	08 Mar 2022 02:33
Last Modified:	08 Mar 2022 02:33
URI:	http://umpir.ump.edu.my/id/eprint/32738
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