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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 |
Issue Date: | 2019 | Source: | Journal of the mechanical behavior of biomedical materials, 2019, v. 90, p. 615-625 | 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. | Keywords: | Breast deformation Finite element method Forward-leaning Hyperelastic Material property |
Publisher: | Elsevier | Journal: | Journal of the mechanical behavior of biomedical materials | 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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