Toward selecting optimal predictive multiscale models
Toward selecting optimal predictive multiscale models
复制标题
选择最佳预测多尺度模型
DOI:
10.1016/j.cma.2022.115517
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发表时间:
2022
影响因子:
7.2
通讯作者:
Faghihi, Danial
中科院分区:
文献类型:
--
作者:
Tan, Jingye;Liang, Baoshan;Singh, Pratyush Kumar;Farrell-Maupin, Kathryn A.;Faghihi, Danial
This work presents a systematic strategy for selecting an “optimal” predictive computational model among a set of possible mechanistic models of a physical system. To this end, the Occam-Plausibility Algorithm (Farrell-Maupin et al., 2015) is extended by introducing a method for the design of model-specific validation experiments to provide data that portray the features of the prediction quantities of interest. Leveraging Bayesian inference and model plausibility, the framework adaptively balances the trade-off between complexity and validity of the models while taking into account the uncertainty in data, model parameters, and the choice of the model itself for making reliable computational predictions. An application of this framework is demonstrated in discrete-continuum multiscale modeling of size-dependent plasticity in polycrystalline materials, involving dislocation dynamics simulations and strain gradient plasticity models.This study suggests that the effectiveness of validation experiments relies upon the choice of the model; thus, a validation data set that adequately informs a predictive computational model may not be effective for validating other models. Additionally, the multiscale modeling results show that, given the discrete dislocation dynamics data, the optimal strain gradient plasticity model for predicting the deformation of a microelectromechanical system is obtained by excluding the isotropic hardening mechanism.
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影响因子:
4.1
作者:
J. Tan;Pedram Maleki;Lu An;M. Di Luigi;Umberto Villa;Chi Zhou;Shenqiang Ren;D. Faghihi
通讯作者:
J. Tan;Pedram Maleki;Lu An;M. Di Luigi;Umberto Villa;Chi Zhou;Shenqiang Ren;D. Faghihi
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
G. Voyiadjis;D. Faghihi
通讯作者:
D. Faghihi
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
M. Gurtin;B. Reddy
通讯作者:
B. Reddy
影响因子:
2.6
作者:
B. Reddy
通讯作者:
B. Reddy
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
Kathryn Anne Farrell
通讯作者:
Kathryn Anne Farrell