Adaptive surrogate modeling for expedited estimation of nonlinear tissue properties through inverse finite element analysis.
Adaptive surrogate modeling for expedited estimation of nonlinear tissue properties through inverse finite element analysis.
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DOI:
10.1007/s10439-011-0317-2
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发表时间:
2011-09
影响因子:
3.8
通讯作者:
Erdemir, Ahmet
中科院分区:
文献类型:
--
作者:
Halloran, Jason P.;Erdemir, Ahmet
关键词:
Simulation-based prediction of specimen-specific biomechanical behavior commonly requires inverse analysis using geometrically consistent finite element (FE) models. Optimization drives such analyses but previous studies have highlighted a large computational cost dictated by iterative use of nonlinear FE models. The goal of this study was to evaluate the performance of a local regression-based adaptive surrogate modeling approach to decrease computational cost for both global and local optimization approaches using an inverse FE application. Nonlinear elastic material parameters for patient-specific heel-pad tissue were found, both with and without the surrogate model. Surrogate prediction replaced a FE simulation using local regression of previous simulations when the corresponding error estimate was less than a given tolerance. Performance depended on optimization type and tolerance value. The surrogate reduced local optimization expense up to 68%, but achieved accurate results for only 1 of 20 initial conditions. Conversely, up to a tolerance value of 20 N2, global optimization with the surrogate yielded consistent parameter predictions with a concurrent decrease in computational cost (up to 77%). However, the local optimization method without the surrogate, although sensitive to the initial conditions, was still on average seven times faster than the global approach. Our results help establish guide-lines for setting acceptable tolerance values while using an adaptive surrogate model for inverse FE analysis. Most important, the study demonstrates the benefits of a surrogate modeling approach for intensive FE-based iterative analysis.
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影响因子:
3.8
作者:
Chen, Kinon;Fata, Bahar;Einstein, Daniel R.
通讯作者:
Einstein, Daniel R.
影响因子:
2.9
作者:
Snyman, JA
通讯作者:
Snyman, JA
影响因子:
10.9
作者:
Schwartz, JM;Denninger, M;Laurendeau, D
通讯作者:
Laurendeau, D
DOI:
10.1016/j.ajodo.2009.08.026
发表时间:
2010-09
影响因子:
3
作者:
Cevidanes, Lucia H. C.;Tucker, Scott;Styner, Martin;Kim, Hyungmin;Chapuis, Jonas;Reyes, Mauricio;Proffit, William;Turvey, Timothy;Jaskolka, Michael
通讯作者:
Jaskolka, Michael
DOI:
10.1115/1.3005333
发表时间:
2009-01-01
影响因子:
1.7
作者:
Halloran, Jason P.;Erdemir, Ahmet;van den Bogert, Antonie J.
通讯作者:
van den Bogert, Antonie J.