Manifold learning based data-driven modeling for soft biological tissues.
Manifold learning based data-driven modeling for soft biological tissues.
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DOI:
10.1016/j.jbiomech.2020.110124
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发表时间:
2021-03-05
影响因子:
2.4
通讯作者:
Chen JS
中科院分区:
文献类型:
--
作者:
He Q;Laurence DW;Lee CH;Chen JS
Data-driven modeling directly utilizes experimental data with machine learning techniques to predict a material’s response without the necessity of using phenomenological constitutive models. Although data-driven modeling presents a promising new approach, it has yet to be extended to the modeling of large-deformation bio-tissues. Herein, we extend our recent local convexity data-driven (LCDD) framework ( to model the mechanical response of a porcine heart mitral valve posterior leaflet. The predictability of the LCDD framework by using various combinations of biaxial and pure shear training protocols are investigated, and its effectiveness is compared with a full structural phenomenological model modified from and a continuum phenomenological Fung-type model. We show that the predictivity of the proposed LCDD nonlinear solver is generally less sensitive to the type of loading protocols (biaxial and pure shear) used in the data set, while more sensitive to the insufficient coverage of the experimental data when compared to the predictivity of the two selected phenomenological models. While no pre-defined functional form in the material model is necessary in LCDD, this study reinstates the importance of having sufficiently rich data coverage in the date-driven and machine learning type of approaches. It is also shown that the proposed LCDD method is an enhancement over the earlier distance-minimization data-driven (DMDD) against noisy data. This study demonstrates that, when sufficient data is available, data-driven computing can be an alternative method for modeling complex biological materials.
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