Co-kriging based multi-fidelity uncertainty quantification of beam vibration using coarse and fine finite element meshes

Rohit, RJ and Ganguli, R (2022) Co-kriging based multi-fidelity uncertainty quantification of beam vibration using coarse and fine finite element meshes. In: International Journal for Computational Methods in Engineering Science and Mechanics, 23 (2). 147 -168.

PDF int_jou_com_23-2_147-168_2022.pdf - Published Version Restricted to Registered users only Download (5MB) | Request a copy

Abstract

Multi-fidelity models have exploded in popularity as they promise to circumvent the computational complexity of a high-fidelity model without sacrificing accuracy. In this paper, we demonstrate the process of building a multi-fidelity model and illustrate its advantage through an uncertainty quantification study using the beam vibration problem. A multi-fidelity co-kriging model is built with data from low- and high-fidelity models, which are finite element models with coarse and fine discretization, respectively. The co-kriging model’s predictive capabilities are excellent, achieving accuracy within 1% of the high-fidelity model while providing 98% computational savings over the high-fidelity model in the uncertainty quantification study.

Item Type:	Journal Article
Publication:	International Journal for Computational Methods in Engineering Science and Mechanics
Publisher:	Bellwether Publishing, Ltd.
Additional Information:	The copyright for this article belongs to Bellwether Publishing, Ltd.
Keywords:	Beam vibration; co-kriging; Latin hypercube sampling; Monte Carlo simulation; multi-fidelity; uncertainty quantification
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	16 Aug 2021 10:28
Last Modified:	16 Sep 2022 05:35
URI:	https://eprints.iisc.ac.in/id/eprint/69189

Actions (login required)

View Item