Design and manufacturing of fiber reinforced elastomeric isolator for seismic isolation

Moon, Byung-Young; Kang, Gyung-Ju; Kang, Beom-Soo; Kelly, James M.

doi:10.1016/s0924-0136(02)00713-6

Cited by 114 publications

(50 citation statements)

References 4 publications

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“…Since ω can be expressed in terms of cyclic frequency, f, (ω = 2πf), and the amplitude of cyclic lateral displacement, In a sinosoidal harmonic motion, the amplitude of the linear velocity, V, is related to the amplitude of the displacement using the angular frequency, ω, according to Equation (4). Since ω can be expressed in terms of cyclic frequency, f, (ω = 2πf ), and the amplitude of cyclic lateral displacement, A, is equal to the shear strain, γ, multiplied by the total thickness of rubber layers, t r , (A = γt r ), the lateral cyclic frequency, f H , at 100% shear strain, can be calculated from the horizontal rate, V H , according to Equation (5).…”

Section: Rate Sensitivity Testmentioning

confidence: 99%

“…It should be mentioned that the horizontal frequency, fH, was computed according to Equation (5). By considering a constant shear strain (e.g., 100%) and a constant lateral cyclic rate, the horizontal frequency changes for different elastomeric bearings since C-FREIs have different total thicknesses of elastomer (tr).…”

Section: Effect Of Lateral Cyclic Ratementioning

confidence: 99%

“…In fact, by automating the fabrication process of FREIs, the production cost is noticeably reduced [3,5]. A big difference between these two types of reinforcement (fiber fabric and steel) is the flexibility of reinforcement.…”

Section: Introductionmentioning

confidence: 99%

“…FRP composite materials have low density and a high strength-to-weight ratio. As a result, FREIs, which have superior performance, are significantly lighter than SREIs [5]. Reducing the weight of rubber bearings can significantly facilitate the manufacturing, shipping, handling and installation processes.…”

Section: Introductionmentioning

confidence: 99%

“…Moon et al [5] fabricated FREIs consisting of different fibers (e.g., carbon, aramid, and glass) and compared them with SREIs. Experimental results revealed that FREIs are superior to SREIs in terms of vertical stiffness, effective horizontal stiffness, and equivalent viscous damping.…”

Section: Introductionmentioning

confidence: 99%

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Experiment-Based Sensitivity Analysis of Scaled Carbon-Fiber-Reinforced Elastomeric Isolators in Bonded Applications

Dezfuli

Alam

2016

Fibers

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Fiber-reinforced elastomeric isolators (FREIs) are a new type of elastomeric base isolation systems. Producing FREIs in the form of long laminated pads and cutting them to the required size significantly reduces the time and cost of the manufacturing process. Due to the lack of adequate information on the performance of FREIs in bonded applications, the goal of this study is to assess the performance sensitivity of 1/4-scale carbon-FREIs based on the experimental tests. The scaled carbon-FREIs are manufactured using a fast cold-vulcanization process. The effect of several factors including the vertical pressure, the lateral cyclic rate, the number of rubber layers, and the thickness of carbon fiber-reinforced layers are explored on the cyclic behavior of rubber bearings. Results show that the effect of vertical pressure on the lateral response of base isolators is negligible. However, decreasing the cyclic loading rate increases the lateral flexibility and the damping capacity. Additionally, carbon fiber-reinforced layers can be considered as a minor source of energy dissipation.

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Section: Rate Sensitivity Testmentioning

confidence: 99%

Section: Effect Of Lateral Cyclic Ratementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experiment-Based Sensitivity Analysis of Scaled Carbon-Fiber-Reinforced Elastomeric Isolators in Bonded Applications

Dezfuli

Alam

2016

Fibers

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Experimental Assessment of the Mechanical Performance of Graphene Nanoplatelets Coated Polymers

Rivera,

Londoño Monsalve,

Craciun

et al. 2023

Adv Eng Mater

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This study presents the effect of spray‐coated graphene nanoplatelets on the mechanical response of various polymers to cyclic loadings. The substrates material (three polymers) and the coating (various numbers of coating layers) are assessed. The experimental results suggest that the compressive stiffness, compressive modulus, damping, and energy dissipation of the samples coated with graphene nanoplatelets improve with respect to the uncoated samples. The outcomes of this experimental research highlight the feasibility of utilizing films of graphene nanoplatelets to improve the mechanical properties of polymers for vibration isolation, foreseeing application in various environments, for instance, in buildings and infrastructures (bridges, railways) for seismic and acoustic isolation.

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Comparison of fundamental properties of new types of fiber‐mesh‐reinforced seismic isolators with conventional isolators

Naghshineh

Akyüz

Caner

2013

Earthq Engng Struct Dyn

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SUMMARY New types of fiber‐reinforced rubber‐based seismic isolators have been a research interest for a number of engineers in the past decade. These new types of isolators can have similar seismic performances compared with the conventional ones. In most of the previous researches, the fiber‐reinforced rubber‐based isolators is usually manufactured with placing fiber sheets between precut rubber layers with the use of a bonding agent. This research differs from the previous researches in terms of manufacturing process, use of fiber mesh instead of fiber sheets, and use of lead in the core for some of the bearings. The aim of this research is to provide comparisons in fundamental seismic response properties of the new type of fiber mesh reinforced isolators and conventional isolators. In this scope, four pairs of fiber mesh reinforced elastomeric bearings and four pairs of steel‐reinforced elastomeric bearings are subjected to various levels of compression stresses and cyclic shear strains under constant vertical pressure. The tested types of isolators are fiber mesh reinforced elastomeric bearing, fiber mesh reinforced elastomeric bearing with lead core, steel‐reinforced elastomeric bearings, and steel‐reinforced elastomeric bearings with lead core. In this research, steel‐reinforced bearings are called conventional isolators. The major advantage for fiber mesh reinforced bearings observed during the tests is that these isolators can develop a considerable low horizontal stiffness compared with the conventional isolators. The damping characteristics of the new and conventional types are similar to each other. Copyright © 2013 John Wiley & Sons, Ltd.

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Design and manufacturing of fiber reinforced elastomeric isolator for seismic isolation

Cited by 114 publications

References 4 publications

Experiment-Based Sensitivity Analysis of Scaled Carbon-Fiber-Reinforced Elastomeric Isolators in Bonded Applications

Experiment-Based Sensitivity Analysis of Scaled Carbon-Fiber-Reinforced Elastomeric Isolators in Bonded Applications

Experimental Assessment of the Mechanical Performance of Graphene Nanoplatelets Coated Polymers

Comparison of fundamental properties of new types of fiber‐mesh‐reinforced seismic isolators with conventional isolators

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