Stochastic Modeling and identification of material parameters on structures produced by additive manufacturing
Stochastic Modeling and identification of material parameters on structures produced by additive manufacturing
复制标题
增材制造结构材料参数的随机建模和识别
DOI:
10.1016/j.cma.2021.114166
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发表时间:
2021
影响因子:
7.2
通讯作者:
Gall, Ken
中科院分区:
文献类型:
--
作者:
Chu, Shanshan;Guilleminot, Johann;Kelly, Cambre;Abar, Bijan;Gall, Ken
A methodology enabling the representation, sampling, and identification of spatially-dependent stochastic material parameters on complex structures produced by additive manufacturing is presented. The modeling component builds upon earlier works by the authors and relies on the combination of two ingredients. First, a fractional stochastic partial differential equation is introduced and parameterized in order to automatically capture the complex features of additively manufactured parts. Information-theoretic transport maps are subsequently introduced with the aim of ensuring well-posedness in the forward propagation problem. The identification of stochastic elasticity tensors on titanium scaffolds produced by laser powder bed fusion is then discussed. To this end, we consider an isotropic approximation at a mesoscale where fluctuations are aggregated over several layers, and address both the calibration and validation of the probabilistic model by using different sets of physical structural experiments. Despite the high sensitivity of the forward map to applied boundary conditions, geometrical parameters, and structural porosity, it is shown that the calibrated stochastic model can generate non-vanishing probability levels for all experimental observations.
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DOI:
--
发表时间:
2019
期刊:
Journal of manufacturing science and engineering
影响因子:
--
作者:
Tesfaye Moges;G. Ameta;P. Witherell
通讯作者:
P. Witherell
影响因子:
7.2
作者:
Staber, B.;Guilleminot, J.
通讯作者:
Guilleminot, J.
DOI:
10.1137/120898346
发表时间:
2013
期刊:
Multiscale Model. Simul.
影响因子:
--
作者:
J. Guilleminot;Christian Soize
通讯作者:
Christian Soize
DOI:
10.1088/1361-651x/ab01bf
发表时间:
2019-01
影响因子:
1.8
作者:
Supriyo Ghosh;M. Mahmoudi;L. Johnson;A. Elwany;R. Arróyave;D. Allaire
通讯作者:
Supriyo Ghosh;M. Mahmoudi;L. Johnson;A. Elwany;R. Arróyave;D. Allaire
影响因子:
4.1
作者:
Chen, Peng;Haberman, Michael R.;Ghattas, Omar
通讯作者:
Ghattas, Omar