A modiﬁed rigid-object formulation is developed, and employed as part of the ﬂuid–object interaction modeling framework from Akkerman et al. (J Appl Mech 79(1):010905, 2012. https://doi.org/10.1115/1.4005072) to simulate free vibration and ﬂutter of long-span bridges subjected to strong winds. To validate the numerical methodology, companion wind tunnel experiments have been conducted. The results show that the computational framework captures very precisely the aeroelastic behavior in terms of aerodynamic stiffness, damping and ﬂutter characteristics. Considering its relative simplicity and accuracy, we conclude from our study that the proposed free-vibration simulation technique is a valuable tool in engineering design of long-span bridges. Keywords Flutter · Numerical methods · Solid–ﬂuid interaction · Rigid bodies · Wind 1 Introduction methods have been employed in several marine applications in the study of free-surface ﬂows [1,7–9]. In the context of The Finite Element Method (FEM) has in recent decades bridge engineering, FOI has been used to study the effect seen signiﬁcant development in accurate modeling in Com- of railings and spoilers on the Hardanger bridge  and to putational Fluid Dynamics (CFD) and Fluid–Structure Inter- simulate the ﬂutter phenomenon for the Great Belt East sus- action (FSI), which are, with the increasing computer power, pension
Computational Mechanics – Springer Journals
Published: Jun 4, 2018
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