Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/80599
Title: Optimization method for the determination of Mooney-Rivlin material coefficients of the human breasts in-vivo using static and dynamic finite element models
Authors: Sun, Y 
Chen, L
Yick, KL 
Yu, W 
Lau, N 
Jiao, W 
Keywords: Breast deformation
Finite element method
Forward-leaning
Hyperelastic
Material property
Issue Date: 2019
Publisher: Elsevier
Source: Journal of the mechanical behavior of biomedical materials, 2019, v. 90, p. 615-625 How to cite?
Journal: Journal of the mechanical behavior of biomedical materials 
Abstract: It has been a long-standing problem in the engineering design of bra for optimal support and shaping due to the difficulty of quantifying the hyper-elastic properties of human breasts. The objective of this study is to determine an optimal approach to obtain the non-linear properties of breast soft tissues and the corresponding deformations during motions. The Mooney-Rivlin material parameters of the breasts in-vivo were verified through an optimization process that involved iteratively changing the material coefficients with the integration of static and dynamic finite element models. Theoretical equations of a rigid-flexible coupled system during the motion of forward-leaning were established with gravitational, centrifugal and Coriolis forces to simulate the dynamic deformation of the flexible breasts. The resultant, optimally generated, coefficients of the Mooney-Rivlin hyperelastic material type for the breast were found. This new set of breast material coefficients was verified by finite element analysis of the breast deformation during forward-leaning and running movement. The method proposed in this study provides an effective way to determine the breast properties for predicting breast deformation and analysis of the bra-breast contact mechanism and thus, improving the design of bras.
URI: http://hdl.handle.net/10397/80599
EISSN: 1751-6161
DOI: 10.1016/j.jmbbm.2018.11.016
Rights: © 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/).
The following publication: Sun, Y., Chen, L., Yick, K. L., Yu, W., Lau, N., & Jiao, W. (2019). Optimization method for the determination of Mooney-Rivlin material coefficients of the human breasts in-vivo using static and dynamic finite element models. Journal of the mechanical behavior of biomedical materials, 90, 615-625 is available at https://doi.org/10.1016/j.jmbbm.2018.11.016
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