Results 11 to 20 of about 9,630 (234)

High-Accuracy Finite Element Model Updating a Framed Structure Based on Response Surface Method and Partition Modification

open access: yesAerospace, 2023
In this paper, a finite element model updating (FEMU) method is proposed based on the response surface model (RSM) and genetic algorithm (GA) to establish a high-precision finite element (FE) model of space station scientific experiment racks. First, the
Qingyu Zhu   +3 more
doaj   +1 more source

Kriging Model for Time-Dependent Reliability: Accuracy Measure and Efficient Time-Dependent Reliability Analysis Method

open access: yesIEEE Access, 2020
As the performance function of a mechanical structure is usually based on time-consuming computer codes, predicting time-dependent reliability analysis requires a large number of costly simulations in engineering.
Yutao Yan   +3 more
doaj   +1 more source

Kriging Model with Fractional Euclidean Distance Matrices [PDF]

open access: yesInformatica, 2019
Summary: The multidimensional data model for kriging is developed using fractional Euclidean distance matrices (FEDM). The properties of FEDM are studied by means of the kernel matrix mehod. It has been shown that the factorization of kernel matrix enables us to create the embedded set being a nonsingular simplex.
Pozniak, Natalija   +2 more
openaire   +4 more sources

Two-stage aerodynamic optimization method based on early termination of CFD convergence and variable-fidelity model

open access: yesXibei Gongye Daxue Xuebao, 2021
Efficient aerodynamic design optimization method is of great value for improving the aerodynamic performance of little UAV's airfoil. Using engineering or semi-engineering estimation method to analyze aerodynamic forces in solving aerodynamic ...

doaj   +1 more source

An optimization method for material sound absorption performance based on surrogate model

open access: yesActa Acustica, 2022
In some complex engineering design problems, the use of numerical simulation methods to solve the target value often consumes several hours or even longer, which limits the real-time response to the model.
Song Hao   +3 more
doaj   +1 more source

Statistical Tests for Cross-Validation of Kriging Models [PDF]

open access: yesSSRN Electronic Journal, 2019
Kriging or Gaussian process models are popular metamodels (surrogate models or emulators) of simulation models; these metamodels give predictors for input combinations that are not simulated. To validate these metamodels for computationally expensive simulation models, the analysts often apply computationally efficient cross-validation. In this paper,
Jack P. C. Kleijnen, Wim C. M. van Beers
openaire   +2 more sources

Ultimate strength reliability analysis of ship plates based on improved AK-MCS method

open access: yesZhongguo Jianchuan Yanjiu, 2020
[Objectives] In view of the frequent occurrence of marine accidents caused by low ultimate bearing capacity of ships. To this end, the improved AK-MCS method is proposed for the research of the ultimate strength reliability of ship structures.[Methods ...
LUO Wenjun, WANG Deyu
doaj   +1 more source

Selection of additive elements for lead-free solders by use of a Kriging-based method for efficiently searching materials

open access: yesNihon Kikai Gakkai ronbunshu, 2015
A Kriging-based method for efficiently searching materials was used to select additive elements in lead-free solders that are effective for suppressing the grain-boundary diffusion, which is the cause of smaller breaking elongation than lead-contained ...
Norihiko NONAKA   +4 more
doaj   +1 more source

Clustering spatial autoregressive kriging model for climate: A bibliometric analysis approach [PDF]

open access: yesInternational Journal of Data and Network Science, 2023
Climate change is caused by temperature, rainfall, and wind variation in locations that last a long time. This change can be described and predicted using a spatial model, one of which is the Clustering Spatial Autoregressive (SAR) Kriging model.
Annisa Nur Falah   +3 more
doaj   +1 more source

Grade estimation of Zu2 Jajarm deposit by considering imprecise variogram model parameters based on the extension principle [PDF]

open access: yesInternational Journal of Mining and Geo-Engineering, 2018
Nowadays, kriging has been accepted as the most common method of grade estimation in mineral resource evaluation stage. Access to the crisp assay data and a variogram model are the necessary means for the utilization of this method. Since fitting a crisp
Saeed Soltani   +2 more
doaj   +1 more source

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