Finite Element Modeling of Single and Multi-Spherical Friction Pendulum Bearings

Kavvadias, Ioannis E.; Bibo, Henrick; Vasiliadis, Lazaros K.

doi:10.7712/120117.5733.18107

Cited by 7 publications

(4 citation statements)

References 15 publications

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“…The body of literature on the topic may be subdivided into two main categories. The first is represented by numerical methods, usually based on finite element models [13]. The second (which includes the present work) is represented by analytical approaches [7,14], in which simplified models based on a small number of degrees of Over the years many studies have been conducted to better understand the dynamics of systems in which components are forced to slide with friction over other components, the ultimate objective being to identify the conditions that may disrupt their smooth, efficient functioning.…”

Section: Figurementioning

confidence: 99%

“…The body of literature on the topic may be subdivided into two main categories. The first is represented by numerical methods, usually based on finite element models [13]. The second (which includes the present work) is represented by analytical approaches [7,14], in which simplified models based on a small number of degrees of brakes, or drill bits [10]) and may exhibit complex dynamic behavior even when only a small number of degrees of freedom are involved.…”

Section: Introductionmentioning

confidence: 99%

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Non-Linear Dynamics of Simple Elastic Systems Undergoing Friction-Ruled Stick–Slip Motions

Barsotti,

Bennati,

Migliaccio

2024

CivilEng

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The stick–slip phenomenon is a jerking motion that can occur while two objects slide over each other with friction. There are several situations in which this phenomenon can be observed: between the slabs of the friction dampers used to mitigate vibrations in buildings, as well as between the components of the base isolation systems used for seismic protection. The systems of this kind are usually designed to work in a smooth and flawless manner, but under particular conditions undesired jerking motions may develop, yielding complex dynamic behavior even when only a few degrees of freedom are involved. A simplified approach to the problems of this kind leads to the mechanical model of a rigid block connected elastically to a rigid support and at the same time with friction to a second rigid support, both the supports having a prescribed motion. Despite the apparent simplicity of this model, it is very useful for studying important features of the non-linear dynamics of many physical systems. In this work, after a suitable formulation of the problem, the equations of motion are solved analytically in the sticking and sliding phases, and the influence of the main parameters of the system on its dynamics and limit cycles is investigated and discussed.

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Section: Figurementioning

confidence: 99%

“…The body of literature on the topic may be subdivided into two main categories. The first is represented by numerical methods, usually based on finite element models [13]. The second (which includes the present work) is represented by analytical approaches [7,14], in which simplified models based on a small number of degrees of brakes, or drill bits [10]) and may exhibit complex dynamic behavior even when only a small number of degrees of freedom are involved.…”

Section: Introductionmentioning

confidence: 99%

Non-Linear Dynamics of Simple Elastic Systems Undergoing Friction-Ruled Stick–Slip Motions

Barsotti,

Bennati,

Migliaccio

2024

CivilEng

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“…As such, the DFPBs are simulated with a full three dimensional continuum modelling using the finite elements method. The analytical presentation of the adopted modelling approach, as well as it validation has been presented by Kavvadias et al [38]. The detailed model of the bearing's geometry allows a complete description of it kinematic behavior, accounting the restoring forces, the variation of axial forces among the contact surfaces as a consequence of vertical acceleration or overturning moments, and uplift [39].…”

Section: Examined Modelmentioning

confidence: 99%

Seismic Performance of Double Friction Pendulum Bearings Under Horizontal and Vertical Excitation

Kavvadias¹

2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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In this study the effect of ground motion characteristics on the response of an isolated base using double friction pendulum bearings (DFPBs) is presented. Planar nonlinear time history analyses are performed considering one horizontal and the corresponding vertical component of natural ground motion records. Both far-fault and near-fault ground motion records are considered. In order to focus on the effect of the ground motion intensity measures on the DFPBs response, without taking into account the effect of any other structural characteristics, an analysis model comprised of two DFPBs coupled with a rigid beam is assumed. For this reason, a finite element modeling that can capture the kinematic behavior of the isolation bearing parts is adopted. In order to investigate the effect of the vertical seismic component on the response of the isolated base results in terms of peak developed displacements are presented. Moreover, the performance of ground motion intensity measures for use in probabilistic seismic demand models for isolated base under horizontal and vertical seismic component is assessed.

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“…The analyses results of the friction pendulum isolators models are also verified with those obtained by analyses in other commercial software which encapsulate link models appropriate for the simulation of friction pendulum bearing. The validation procedure is presented by Kavvadias et al [26].…”

Section: Numerical Modelingmentioning

confidence: 99%

Numerical Study on the Dynamic Response of Classical Column Standing Free on an Isolated Base

Kavvadias¹,

Bibo²,

Vasiliadis³

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Finite Element Modeling of Single and Multi-Spherical Friction Pendulum Bearings

Abstract: Abstract. Base isolation is a modern strategy to decrease the effects of earthquakes on buildings of high significance. The general principle is that

Cited by 7 publications

References 15 publications

Non-Linear Dynamics of Simple Elastic Systems Undergoing Friction-Ruled Stick–Slip Motions

Non-Linear Dynamics of Simple Elastic Systems Undergoing Friction-Ruled Stick–Slip Motions

Seismic Performance of Double Friction Pendulum Bearings Under Horizontal and Vertical Excitation

Numerical Study on the Dynamic Response of Classical Column Standing Free on an Isolated Base

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