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Journal articles on the topic 'Modeling of the Base Isolators'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Dr., Thamir Al-Azawi* Dr. AbdulMuttalib I.S. AlMusaui Dr. Salah R. Al-Zaidee. "MODELING OF BASE ISOLATOR AS STRUCTURAL ELEMENT." Global Journal of Engineering Science and Research Management 4, no. 7 (2017): 92–103. https://doi.org/10.5281/zenodo.836621.

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Two proposals for modeling of the base isolators as a structural element have been given. The first model simulates base isolator as two springs, while the second one models base isolator as a deep beam element. Comparison between the two models indicates that if the experimental data to determine the value of EI/L are available, the modeling of base isolator as a deep frame element will be more accurate than the model of two springs. In both models, the energy dissipation in the base isolators has been modeled by an equivalent viscous damping. Based on the comparison with experimental work it

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2

Kumar, Sooraj, and Ganesh Jaiswal. "Effectiveness of Different Base Isolation on Stepped Buildings." International Journal for Research in Applied Science and Engineering Technology 10, no. 7 (2022): 4345–53. http://dx.doi.org/10.22214/ijraset.2022.45997.

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Abstract: Seismic isolation devices are commonly employed to protect structures from the impacts of severe ground motions. ETABS2016, a modelling and analysis programme, was used in this work to model and analyse the isolated stepped building. Rubber isolator link components were used as a single joint element to represent the rubber isolators between the ground and the superstructure. El-Centro seismic records were used to analyse the isolated building. The lateral inter-storey drifts, story displacement and peak absolute floor accelerations, of the isolated building were compared to those of

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3

Jamuna, M. Ganga, and Dr. P Anuradha. "Comparative Analysis of G+15 Building with and Without Lead-Bearing Rubber Base Isolators Using Etabs." International Journal of Soft Computing and Engineering 13, no. 6 (2024): 10–15. http://dx.doi.org/10.35940/ijsce.c8141.13060124.

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The main principle of this project is to protect the buildings by constructing them as earthquake-resistant structures. Base Isolation is a flexible layer between the substructure and superstructure uncoupling the structure from damaging effects from ground motion to resist the vibrations in the structure. It is important to use high technology like base Isolation which protects the structure against extreme earthquakes without sacrificing the performance of the structure. The comparative study is conducted on a G+15 story building with and without Lead Rubber bearing in which IS 875:52015, IS

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M, Ganga Jamuna. "Comparative Analysis of G+15 Building with and Without Lead-Bearing Rubber Base Isolators Using Etabs." International Journal of Soft Computing and Engineering (IJSCE) 13, no. 6 (2024): 10–15. https://doi.org/10.35940/ijsce.C8141.13060124.

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<strong>Abstract:</strong> The main principle of this project is to protect the buildings by constructing them as earthquake-resistant structures. Base Isolation is a flexible layer between the substructure and superstructure uncoupling the structure from damaging effects from ground motion to resist the vibrations in the structure. It is important to use high technology like base Isolation which protects the structure against extreme earthquakes without sacrificing the performance of the structure. The comparative study is conducted on a G+15 story building with and without Lead Rubber bearin

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5

M, Ganga Jamuna. "Comparative Analysis of G+15 Building with and Without Lead-Bearing Rubber Base Isolators Using Etabs." International Journal of Soft Computing and Engineering (IJSCE) 13, no. 6 (2024): 10–15. https://doi.org/10.35940/ijsce.C8141.13060124.

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<strong>Abstract:</strong> The main principle of this project is to protect the buildings by constructing them as earthquake-resistant structures. Base Isolation is a flexible layer between the substructure and superstructure uncoupling the structure from damaging effects from ground motion to resist the vibrations in the structure. It is important to use high technology like base Isolation which protects the structure against extreme earthquakes without sacrificing the performance of the structure. The comparative study is conducted on a G+15 story building with and without Lead Rubber bearin

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6

M, Ganga Jamuna. "Comparative Analysis of G+15 Building with and Without Lead-Bearing Rubber Base Isolators Using Etabs." International Journal of Soft Computing and Engineering (IJSCE) 13, no. 6 (2024): 10–15. https://doi.org/10.35940/ijsce.C8141.13060124.

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<strong>Abstract:</strong> The main principle of this project is to protect the buildings by constructing them as earthquake-resistant structures. Base Isolation is a flexible layer between the substructure and superstructure uncoupling the structure from damaging effects from ground motion to resist the vibrations in the structure. It is important to use high technology like base Isolation which protects the structure against extreme earthquakes without sacrificing the performance of the structure. The comparative study is conducted on a G+15 story building with and without Lead Rubber bearin

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7

M, Ganga Jamuna. "Comparative Analysis of G+15 Building with and Without Lead-Bearing Rubber Base Isolators Using Etabs." International Journal of Soft Computing and Engineering (IJSCE) 13, no. 6 (2024): 10–15. https://doi.org/10.35940/ijsce.C8141.13060124.

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<strong>Abstract:</strong> The main principle of this project is to protect the buildings by constructing them as earthquake-resistant structures. Base Isolation is a flexible layer between the substructure and superstructure uncoupling the structure from damaging effects from ground motion to resist the vibrations in the structure. It is important to use high technology like base Isolation which protects the structure against extreme earthquakes without sacrificing the performance of the structure. The comparative study is conducted on a G+15 story building with and without Lead Rubber bearin

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8

M, Ganga Jamuna. "Comparative Analysis of G+15 Building with and Without Lead-Bearing Rubber Base Isolators Using Etabs." International Journal of Soft Computing and Engineering (IJSCE) 13, no. 6 (2024): 10–15. https://doi.org/10.35940/ijsce.C8141.13060124.

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<strong>Abstract:</strong> The main principle of this project is to protect the buildings by constructing them as earthquake-resistant structures. Base Isolation is a flexible layer between the substructure and superstructure uncoupling the structure from damaging effects from ground motion to resist the vibrations in the structure. It is important to use high technology like base Isolation which protects the structure against extreme earthquakes without sacrificing the performance of the structure. The comparative study is conducted on a G+15 story building with and without Lead Rubber bearin

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9

Uras, R. A. "Use of a Viscoelastic Model for the Seismic Response of Base-Isolated Buildings." Journal of Pressure Vessel Technology 118, no. 3 (1996): 374–83. http://dx.doi.org/10.1115/1.2842203.

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Due to recent developments in elastomer technology, seismic isolation using elastomer bearings is rapidly becoming an acceptable design tool to enhance structural seismic margins and to protect people and equipment from earthquake damage. With proper design of isolators, high-energy seismic input motions can be transformed into low-frequency, low-energy harmonic motions, and the accelerations acting on the isolated building may be significantly reduced. Several alternatives exist for the modeling of the isolators. This study is concerned with the use of a viscoelastic model to predict the seis

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10

Calvi, Paolo M., and David M. Ruggiero. "Numerical modelling of variable friction sliding base isolators." Bulletin of Earthquake Engineering 14, no. 2 (2015): 549–68. http://dx.doi.org/10.1007/s10518-015-9834-y.

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11

Sugihardjo, Hidajat, Tavio Tavio, and Yudha Lesmana. "FE Model of Low Grade Rubber for Modeling Housing’s Low-Cost Rubber Base Isolators." Civil Engineering Journal 4, no. 1 (2018): 24. http://dx.doi.org/10.28991/cej-030966.

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An accurate selection of strain energy function (SEF) plays a very important role for predicting the actual behavior of rubber material in the finite element analysis (FEA). The common method for selecting the SEF is by using the curve fitting procedure. However, the behavior of some typical rubbers, such as low grade rubbers (average hardness value of 47.2), cannot be predicted well by only using the curve fitting procedure. To accurately predict the actual behavior of such specifically nearly incompressible material, a series of FEA were carried out to simulate the actual behavior of four ph

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Vaiana, Nicolò, Mariacristina Spizzuoco, and Giorgio Serino. "Wire rope isolators for seismically base-isolated lightweight structures: Experimental characterization and mathematical modeling." Engineering Structures 140 (June 2017): 498–514. http://dx.doi.org/10.1016/j.engstruct.2017.02.057.

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13

Avinash, A. R., A. Krishnamoorthy, Kiran Kamath, and M. Chaithra. "Sliding Isolation Systems: Historical Review, Modeling Techniques, and the Contemporary Trends." Buildings 12, no. 11 (2022): 1997. http://dx.doi.org/10.3390/buildings12111997.

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Base isolation techniques have emerged as the most effective seismic damage mitigation strategies. Several types of aseismic devices for base isolation have been invented, studied, and used. Out of several isolation systems, sliding isolation systems are popular due to their operational simplicity and ease of manufacturing. This article discusses the historical development of passive sliding isolation systems, such as pure friction systems, friction pendulum systems, and isolators with other sliding surface geometries. Moreover, multiple surface isolation systems and their behavior as well as

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Markou, Athanasios A., and George D. Manolis. "Energy and Transmissibility in Nonlinear Viscous Base Isolators." Journal of Theoretical and Applied Mechanics 46, no. 3 (2016): 17–34. http://dx.doi.org/10.1515/jtam-2016-0014.

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Abstract High damping rubber bearings (HDRB) are the most commonly used base isolators in buildings and are often combined with other systems, such as sliding bearings. Their mechanical behaviour is highly nonlinear and dependent on a number of factors. At first, a physical process is suggested here to explain the empirical formula introduced by J.M. Kelly in 1991, where the dissipated energy of a HDRB under cyclic testing, at constant frequency, is proportional to the amplitude of the shear strain, raised to a power of approximately 1.50. This physical process is best described by non-Newtoni

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15

Giammona, Anthony P., Keri L. Ryan, and Nhan D. Dao. "Evaluation of Assumptions Used in Engineering Practice to Model Buildings Isolated with Triple Pendulum Isolators in SAP2000." Earthquake Spectra 31, no. 2 (2015): 637–60. http://dx.doi.org/10.1193/090213eqs242m.

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The commercial software platform SAP2000 has been used to design base isolated buildings supported by Triple PendulumTM isolators; however, limited full-scale test data are available to validate the use of the software for this application. Additionally, previous work has demonstrated that several pitfalls must be avoided when modeling these types of structures in SAP2000. The ability of SAP2000 to predict key engineering demand parameters used in the design of a base-isolated building is examined by using methods and assumptions employed in current design practice. The SAP2000 analysis result

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Ocak, Ayla, Ümit Işıkdağ, Gebrail Bekdaş, Sinan Melih Nigdeli, Sanghun Kim, and Zong Woo Geem. "Prediction of Damping Capacity Demand in Seismic Base Isolators via Machine Learning." Computer Modeling in Engineering & Sciences 138, no. 3 (2024): 2899–924. http://dx.doi.org/10.32604/cmes.2023.030418.

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17

Al-Anany, Yasser M., Mohamed A. Moustafa, and Michael J. Tait. "Modeling and Evaluation of a Seismically Isolated Bridge Using Unbonded Fiber-Reinforced Elastomeric Isolators." Earthquake Spectra 34, no. 1 (2018): 145–68. http://dx.doi.org/10.1193/072416eqs118m.

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An unbonded fiber-reinforced elastomeric isolator (U-FREI) is a relatively new type of elastomeric bearing that can be implemented as a seismic isolator for bridges. U-FREIs possess beneficial characteristics, including their potentially low-cost and light-weight construction. Individual U-FREIs can be rapidly produced as they can be easily cut from large sheets to the required size and shape, which is an attractive feature for accelerated bridge construction. The objectives of this paper are to introduce a noniterative analytical model to simulate the lateral response of U-FREI, and then to u

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18

Zhao, Guo Qian, Hong Tian Zhang, and Rui Guang Geng. "Modeling and Simulation of Passive Vibration Isolation System of Combustion Engine with Flexible Base." Advanced Materials Research 462 (February 2012): 419–26. http://dx.doi.org/10.4028/www.scientific.net/amr.462.419.

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Based on multi-body dynamics, finite element method and solid modeling technology, a dynamic model combined rigid bodies and flexible bodies about passive vibration isolation system of combustion engine with flexible base was built. A simulation analysis was done for a passive vibration isolation system of four-cylinder diesel supported on a flexible flat plate. Simulation result showed static balance and exciting force were same with theory calculation. Through changing support stiffness between flexible flat plate and ground, boundary condition of flexible base could be changed. And the char

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Cancellara, Donato, Fabio de Angelis, and Mario Pasquino. "Influence of the Strain Hardening of HDRBs in the Evaluation of the Seismic Response of a RC Base Isolated Structure." Advanced Materials Research 602-604 (December 2012): 1546–54. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.1546.

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In this paper we have analyzed the influence of the strain hardening behavior of High Damping Rubber Bearings (HDRBs) adopted for a base isolation system of a Reinforced Concrete (RC) isolated structure. For the modeling of the rubber isolators we have adopted an evolution of the Bouc-Wen’s hysteretic model taking into account the incremental hardening effect which appears when the shear strain of the HDRB exceeds the limit value around 100% usually adopted in design practice. The incremental hardening effect is sometimes neglected in the design but it is an important aspect because it ensures

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20

Vanus, Dakhi S. "Accounting for Vibration Loads in the Design of Acoustic Reverberation Chamber Structures in the Midas FX Software Package." Reinforced concrete structures 4, no. 4 (2023): 81–90. http://dx.doi.org/10.22227/2949-1622.2023.4.81-90.

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This article outlines the main provisions in the design of an acoustic reverberation chamber, methods for modeling such objects in engineering and construction practice. A finite element model of an object is presented in the Midas FX software package. As a result of the calculation, it is possible to evaluate the components of the stress-strain state in concrete and in structural elements or on the contact surface, the effect of vibration loads on RAC structures, their interaction with the foundation and soil base, as well as analysis of the use of vibration isolators in the RAC foundation Ba

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21

Baratta, Alessandro, and Ileana Corbi. "Optimal design of base-isolators in multi-storey buildings." Computers & Structures 82, no. 23-26 (2004): 2199–209. http://dx.doi.org/10.1016/j.compstruc.2004.03.061.

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22

Maulida, Alfia Salma Mei, B. Sri Umniati, Mohammad Sulton, and Andra Akmal Maulidani. "Performance Based Design: Performance Analysis on Fixed Base Structure and Structures with High Damping Rubber Bearing (HDRB)." Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil 13, no. 1 (2025): 11–22. https://doi.org/10.33558/bentang.v13i1.10112.

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Buildings in Malang City face large lateral load from earthquakes due to seismic activity. One method of reducing the lateral load is to use base isolators. Conventional building design resists lateral load by designing buildings to be elastic or rigid with Strength Based Design criteria. However, elasticity results in larger building elements, stiffness increases the building's exposure to earthquake forces, and Strength Based Design is unreliable in shielding from earthquakes since its recommended to be a minimum design criterion by FEMA P-424. Therefore, more comprehensive design criteria s

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Saha, Sandip Kumar, Vasant A. Matsagar, and Arvind K. Jain. "Earthquake Response of Base-Isolated Liquid Storage Tanks for Different Isolator Models." Journal of Earthquake and Tsunami 08, no. 05 (2014): 1450013. http://dx.doi.org/10.1142/s1793431114500134.

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The effect of different isolator parameters on earthquake response of base-isolated liquid storage tanks is investigated herein. Mechanical analog, with three lumped masses, is used to model ground supported base-isolated liquid storage tank, and analyzed for recorded earthquake ground accelerations. The nonlinear force–deformation behavior of the isolator is mathematically modeled in two different ways, represented by (a) equivalent linear elastic-viscous and (b) bi-linear hysteretic behaviors. The equations of motion for the base-isolated tank are derived and solved in the incremental form u

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Çerçevik, Ali Erdem, and Nihan Kazak Çerçevik. "Energy-Based Optimization of Seismic Isolation Parameters in RC Buildings Under Earthquake Action Using GWO." Applied Sciences 15, no. 5 (2025): 2870. https://doi.org/10.3390/app15052870.

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Modeling seismic isolators, one of the most effective installations in the design of earthquake-resistant buildings, is a very important challenge. In this study, we propose a new energy-based approach for the optimization of seismic isolation parameters. The hysteretic energy represents the dissipation of isolated structures in the isolation system. The minimization of input energy ensures that structural components are exposed to reduced seismic energy. For these reasons, this study aims to minimize the input energy and maximize the hysteretic energy. Additionally, an objective function is a

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Wang, Qi, Xufeng Dong, Luyu Li, and Jinping Ou. "Mechanical modeling for magnetorheological elastomer isolators based on constitutive equations and electromagnetic analysis." Smart Materials and Structures 27, no. 6 (2018): 065017. http://dx.doi.org/10.1088/1361-665x/aabdb5.

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Auad, Gaspar, Bastián Valdés, Víctor Contreras, José Colombo, and José Almazán. "Effects of the Ductility Capacity on the Seismic Performance of Cross-Laminated Timber Structures Equipped with Frictional Isolators." Buildings 15, no. 8 (2025): 1208. https://doi.org/10.3390/buildings15081208.

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In developing countries with high seismic activity, a need exists to construct resilient infrastructure and reduce the housing deficit. Industrialized timber construction and the implementation of seismic isolation interfaces may represent a good alternative to respond to these demands. This paper studies the feasibility of constructing cross-laminated timber (CLT) buildings equipped with frictional pendulum bearings in Chile or similar highly seismic regions. The first part of this study shows a first-order approach for modeling the highly nonlinear behavior of CLT walls using a Smooth Hyster

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PARULEKAR, Y. M., and G. R. REDDY. "PASSIVE RESPONSE CONTROL SYSTEMS FOR SEISMIC RESPONSE REDUCTION: A STATE-OF-THE-ART REVIEW." International Journal of Structural Stability and Dynamics 09, no. 01 (2009): 151–77. http://dx.doi.org/10.1142/s0219455409002965.

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Research and development of seismic response control devices has gained prime importance recently, due to an increased number of devastating earthquakes. Passive control systems are now accepted all over the world and hence research in this area is continuing to develop reliable, efficient and cost effective devices along with constitutive modeling. This paper begins with qualitative description and comparison of passive, active and semiactive control systems. Further, it mentions advantages of passive control systems over the others. A detailed literature review of passive devices is then pro

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Vaiana, Nicoló, Raffaele Capuano, Salvatore Sessa, Francesco Marmo, and Luciano Rosati. "Nonlinear Dynamic Analysis of Seismically Base-Isolated Structures by a Novel OpenSees Hysteretic Material Model." Applied Sciences 11, no. 3 (2021): 900. http://dx.doi.org/10.3390/app11030900.

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The complex response characterizing elastomeric isolation bearings is reproduced by employing a novel uniaxial hysteretic model that has been recently formulated and successfully implemented in OpenSees. Such a novel OpenSees material model offers several advantages with respect to differential models typically available in commercial software products for structural analysis, such as 3D-BASIS and CSi programs. Firstly, it is based on a set of only five model parameters that have a clear mechanical significance; such a property not only allows one to drastically simplify the parameters identif

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Amir, M. A., and N. H. Hamid. "Hysteresis Loops of Base Isolation System - An Overview." Key Engineering Materials 879 (March 2021): 189–201. http://dx.doi.org/10.4028/www.scientific.net/kem.879.189.

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Recently, there are a lot of technological developments in the earthquake engineering field to reduce structural damage and one of them is a base isolation system. The base isolation system is one of the best technologies for the safety of human beings and properties under earthquake excitations. The aim of this paper is to review previous research works on simulation of base isolation systems for RC buildings and their efficiency in the safety of these buildings. Base isolation decouples superstructure from substructure to avoid transmission of seismic energy to the superstructure of RC build

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Cancellara, Donato, Fabio de Angelis, and Mario Pasquino. "A Novel Seismic Base Isolation System Consisting of a Lead Rubber Bearing in Series with a Friction Slider. Part I: Nonlinear Modeling of the System." Applied Mechanics and Materials 256-259 (December 2012): 2185–92. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.2185.

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In this paper a new seismic base isolator, called High Damping Hybrid Seismic Isolator (HDHSI), is proposed. It is obtained by the assembly in series of a Lead Rubber Bearing (LRB) and a Friction Slider (FS) with a high friction coefficient. The HDHSI device is in contrast with the Resilient-Friction Base Isolator (R-FBI) with the aim of optimizing the Electricité De France (EDF) system. The mathematical model of a structure base isolated by a HDHSI system is analyzed with a two Degree of Freedom System (2-DOF) in which the superstructure is assimilated to a rigid body. Nonlinear finite elemen

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Sravya, G. Jyothi, and A. Manchalwar. "Comparison of Seismic isolation with isolator and Soil structure Interaction U-shaped metallic isolator and Soil structure Interaction." E3S Web of Conferences 184 (2020): 01097. http://dx.doi.org/10.1051/e3sconf/202018401097.

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Soil condition is an important research area in earthquake engineering. In this work we evaluated the impact of soil-structure interaction (SSI) and U-shaped steel damper on the isolated response of the building base. Different soils for a seismic performance of multistory buildings are systematically compared and discussed. The soil’s physical state is divided into; hard soil, medium soil, and soft soil. It was compared with the U-shaped steel damper and there is noticeable difference between them. This study concludes that the use of steel damper shaped and SSI has been effective in minimizi

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Vasile, Ovidiu, and Mihai Bugaru. "A New Modeling Approach for Viscous Dampers Using an Extended Kelvin–Voigt Rheological Model Based on the Identification of the Constitutive Law’s Parameters." Computation 11, no. 1 (2022): 3. http://dx.doi.org/10.3390/computation11010003.

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In addition to elastomeric devices, viscous fluid dampers can reduce the vibration transmitted to dynamic systems. Usually, these fluid dampers are rate-independent and used in conjunction with elastomeric isolators to insulate the base of buildings (buildings, bridges, etc.) to reduce the shocks caused by earthquakes by increasing the damping capability. According to the EN 15129 standard, the velocity-dependent anti-seismic devices are Fluid Viscous Dampers (FVDs) and Fluid Spring Dampers (FSDs). Based on experimental data from a dynamic regime of a fluid viscous damper of small dimensions,

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Markou, A. A., and G. D. Manolis. "Numerical Solutions for Nonlinear High Damping Rubber Bearing Isolators: Newmark’s Method with Netwon-Raphson Iteration Revisited." Journal of Theoretical and Applied Mechanics 48, no. 1 (2018): 46–58. http://dx.doi.org/10.2478/jtam-2018-0004.

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AbstractNumerical methods for the solution of dynamical problems in engineering go back to 1950. The most famous and widely-used time stepping algorithm was developed by Newmark in 1959. In the present study, for the first time, the Newmark algorithm is developed for the case of the trilinear hysteretic model, a model that was used to describe the shear behaviour of high damping rubber bearings. This model is calibrated against free-vibration field tests implemented on a hybrid base isolated building, namely the Solarino project in Italy, as well as against laboratory experiments. A single-deg

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KOMIYA, Ryosuke, Takayoshi KAMADA, Kazuhiro TANAKA, and Shunta SASAKI. "Modeling of High Speed Elevator Traction Machine Base and Investigation of Vibration Isolator." Proceedings of the Dynamics & Design Conference 2017 (2017): 239. http://dx.doi.org/10.1299/jsmedmc.2017.239.

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35

Nida, Ali, Shagun Aggarwal Ms., Khursheed Salman, and Kumar Paul Virendra. "Earthquake Resilient Construction Techniques in Mid-Rise Building." Journal of Housing and Advancement in Interior Designing 8, no. 1 (2025): 19–44. https://doi.org/10.5281/zenodo.15534350.

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<em>This research paper investigates the implementation of earthquake resilient techniques in mid-rise buildings, aiming to mitigate the devastating impacts of seismic events on urban infrastructure. With the increasing urbanization and concentration of populations in seismic-prone regions, the need for robust building designs and technologies is paramount. The study begins by examining the historical context of seismic events and their impact on mid-rise structures, highlighting past failures and lessons learned.</em> <em>Subsequently, an extensive review of existing earthquake resilient tech

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Yu, Yang, Yancheng Li, and Jianchun Li. "Nonparametric modeling of magnetorheological elastomer base isolator based on artificial neural network optimized by ant colony algorithm." Journal of Intelligent Material Systems and Structures 26, no. 14 (2015): 1789–98. http://dx.doi.org/10.1177/1045389x15577649.

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37

Pardo-Ramos, Alejandro, and Claudia Marin-Artieda. "Effects of isolator modeling on the predicted responses of an HDR base-isolated building." Engineering Structures 294 (November 2023): 116743. http://dx.doi.org/10.1016/j.engstruct.2023.116743.

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Khosravi, Shayan, and Mohsen Amjadian. "Modeling, Design, and Laboratory Testing of a Passive Friction Seismic Metamaterial Base Isolator (PFSMBI)." Materials 18, no. 2 (2025): 363. https://doi.org/10.3390/ma18020363.

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This paper focuses on the theoretical and analytical modeling of a novel seismic isolator termed the Passive Friction Mechanical Metamaterial Seismic Isolator (PFSMBI) system, which is designed for seismic hazard mitigation in multi-story buildings. The PFSMBI system consists of a lattice structure composed of a series of identical small cells interconnected by layers made of viscoelastic materials. The main function of the lattice is to shift the fundamental natural frequency of the building away from the dominant frequency of earthquake excitations by creating low-frequency bandgaps (FBGs) b

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Cancellara, Donato, and Mario Pasquino. "A New Passive Seismic Control Device for Protection of Structures under Anomalous Seismic Events." Applied Mechanics and Materials 82 (July 2011): 651–56. http://dx.doi.org/10.4028/www.scientific.net/amm.82.651.

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In this paper, the possibility offered by the Base Isolation System, designed according to the strategy of limitation seismic force, in order to ensure a significant level of robustness to the isolated superstructure, has been analyzed. In according to the strategy of limitation seismic force, a new seismic isolator called HDHSI (High Damping Hybrid Seismic Isolator) is proposed, obtained by the assembly in series of a LRB (Lead Rubber Bearing) and a FS (Friction Slider) with high friction coefficient. The HDHSI device is in contrast to the R-FBI (Resilient-Friction Base Isolation) isolator an

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Ponzo, Felice Carlo, Antonio Di Cesare, Alessio Telesca, Alberto Pavese, and Marco Furinghetti. "Advanced Modelling and Risk Analysis of RC Buildings with Sliding Isolation Systems Designed by the Italian Seismic Code." Applied Sciences 11, no. 4 (2021): 1938. http://dx.doi.org/10.3390/app11041938.

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Double Curved Concave Surface Sliders (DCCSS) are seismic isolators based on the pendulum principle widely used worldwide. Coherently with European code, DCCSS do not include any mechanical elements as end-stopper. In case of displacement higher than those associated with the design earthquakes, the inner slider runs on the edge of the sliding surfaces beyond their geometric displacement capacity keeping the ability to support gravity loads. In this paper, the advanced modelling and risk analysis of reinforced concrete (RC) base-isolated buildings designed for medium and high seismicity zones

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Misdi, Misdi, and Amir Hamzah. "TIME HISTORY ANALYSIS PADA STRUKTUR BANGUNAN YANG MENGGUNAKAN BASE ISOLATOR." Jurnal Al Ulum LPPM Universitas Al Washliyah Medan 13, no. 1 (2025): 82–88. https://doi.org/10.47662/alulum.v13i1.874.

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Base isolators are designed to protect structures from earthquake impacts by decoupling horizontal ground motion from the building. This technology is widely applied to bridges, buildings, and critical facilities due to its efficiency in reducing damage risks. This study aims to evaluate the effectiveness of base isolators in minimizing dynamic structural responses to earthquakes. Numerical simulations were conducted to compare the performance of structures with and without base isolators, focusing on maximum acceleration, velocity, and displacement. The results indicate that base isolators re

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Kuhlman, E. George. "Interaction of Virulent Single-Gall Rust Isolates of Cronartium quercuum f. sp. fusiforme and Resistant Families of Loblolly Pine." Forest Science 38, no. 3 (1992): 641–51. http://dx.doi.org/10.1093/forestscience/38.3.641.

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Abstract Basidiospores derived from 6 virulent single-gall aeciospore isolates of Cronartium quercuum f. sp. fusiforme produced different frequencies of galls on half-sib progeny of 21 loblolly pine families. One family was immune to infection by 2 of the isolates (0% of seedlings with galls), but only moderately resistant (53% galls) to another isolate. Another family was susceptible to all 6 isolates (70-82% of seedlings with galls). The interactions between individual families and the 6 isolates suggest that there are at least 9 different patterns of relative susceptibility among these 21 p

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Jia, Zekun, Yang Xiang, and Yong Zhou. "Multi-Stiffness Matching Method of Raft Isolator for Avoiding Resonance of Superconducting Motor Based on Rbf Agent Model and Particle Swarm Optimization Algorithm." International Journal of Acoustics and Vibration 30, no. 1 (2025): 48–60. https://doi.org/10.20855/ijav.2025.30.12108.

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The multi-stiffness matching method of raft isolator based on RBF (Radial Basis Function) agent model and particle swarm optimization algorithm is proposed to solve the resonance of superconducting motor using as main propulsion plant. Firstly, the modeling methods for the end-winding of high-temperature superconducting motor stator coils are investigated, including the equivalent density method, additional mass method, and non-simplification method. Additionally, the optimal modeling scheme is selected by comparing with experimental results. An accurate vibration prediction model for the supe

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Yu, Yang, Sayed Royel, Jianchun Li, Yancheng Li, and Quang Ha. "Magnetorheological elastomer base isolator for earthquake response mitigation on building structures: modeling and second-order sliding mode control." Earthquakes and Structures 11, no. 6 (2016): 943–66. http://dx.doi.org/10.12989/eas.2016.11.6.943.

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Kurniawandy, Alex, Zulfikar Djauhari, Hafizd Ahmed Jamil, and Riza Aryanti. "Study of the effect of installing seismic isolators at higher elevations in moment frame structures." E3S Web of Conferences 464 (2023): 15008. http://dx.doi.org/10.1051/e3sconf/202346415008.

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A seismic isolator is a helpful technology to protect structures from seismic hazards that threaten building structures. Seismic isolators increase the structure's natural period, thereby reducing the seismic response that occurs in the structure. Seismic isolators are generally installed at the base of the structure. However, in this study, the installation will be simulated at a higher elevation. The study purpose is to investigate the effect of installation seismic isolators in different level. The case study is a ten stories structures with four models. Model 1 is fixed without a base isol

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Awchat, G. D., and A. S. Monde. "Influence of Soil-Structure Interaction on the Seismic Response of the Structure on Mat Foundation." Civil Engineering Journal 7, no. 10 (2021): 1679–92. http://dx.doi.org/10.28991/cej-2021-03091752.

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The disasters that occur due to seismic activities not only affect the structure but also soil beneath it. Neglecting the effect of Soil-Structure Interaction (SSI) in design leads to unsafe design. This paper focuses on the behavior of the structure under El-Centro earthquake considering soil-structure interaction (SSI). Seismic response of G+10 storied building in various seismic zones of India is obtained using Time-history method. The direct approach i.e., finite element analysis is used to analyze effect of SSI. The model with mat foundation and soil is compared with fixed base model in S

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P V, Shadiya, and Priyanka Dilip P. "Seismic Analysis of Irregular Buildings With And Without Lead Plug Rubber Bearings (LPRB)." Journal of Recent Activities in Infrastructure Science 8, no. 2 (2023): 1–11. http://dx.doi.org/10.46610/jorais.2023.v08i02.001.

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Base isolation has become an effective technique that aids in earthquake hazard mitigation and has been in use for the past decade. By properly separating the structure from the horizontal ground motion components, the base isolation system lowers the likelihood of resonance. Isolators are provided at the base of the structures, and decoupling is accomplished by modifying the system's flexibility and adding adequate damping. Structures with irregular plans are gaining popularity owing to their aesthetic appearance as well as architectural designs. The response of such structures to seismic act

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Kasalanati, Amarnath, and Michael C. Constantinou. "Testing and Modeling of Prestressed Isolators." Journal of Structural Engineering 131, no. 6 (2005): 857–66. http://dx.doi.org/10.1061/(asce)0733-9445(2005)131:6(857).

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Mao, Xiaoye, Mengmeng Yin, Hu Ding, Xiaofeng Geng, Yongjun Shen, and Liqun Chen. "Modeling, analysis, and simulation of X-shape quasi-zero-stiffness-roller vibration isolators." Applied Mathematics and Mechanics 43, no. 7 (2022): 1027–44. http://dx.doi.org/10.1007/s10483-022-2871-6.

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AbstractExisting quasi-zero stiffness (QZS) isolators are reviewed. In terms of their advantages, a novel X-shape QZS isolator combined with the cam-roller-spring mechanism (CRSM) is proposed. Different from the existing X-shape isolators, oblique springs are used to enhance the negative stiffness of the system. Meanwhile, the CRSM is used to eliminate the gravity of the loading mass, while the X-shape structure leaves its static position. The existing QZS isolators are demonstrated and classified according to their nonlinearity mechanisms and classical shapes. It is shown that the oblique spr

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Egbelakin, Temitope, Olabode Emmanuel Ogunmakinde, Temitope Omotayo, and Adebayo Sojobi. "Demystifying the Barriers and Motivators for the Adoption of Base Isolation Systems in New Zealand." Buildings 12, no. 5 (2022): 522. http://dx.doi.org/10.3390/buildings12050522.

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A base isolator is a proven system that can significantly reduce any damage to a building in the event of an earthquake. Despite their efficacy, seismic isolators are not widely used in New Zealand, with only about forty systems in use during the 2010 and 2011 Canterbury Earthquakes. This study seeks to investigate why base isolation systems are not frequently used in seismic strengthening projects and buildings in New Zealand. It also focuses on determining ways in which seismic isolators could become more widely used in New Zealand due to increased seismic activity. This study used an explor

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