Bibliografie tematiche / KANAI AND TAJIMI PARAMETERS

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Letteratura scientifica selezionata sul tema "KANAI AND TAJIMI PARAMETERS"

Autore: Grafiati

Pubblicato: 11 settembre 2023

Ultima modifica: 31 luglio 2025

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Articoli di riviste sul tema "KANAI AND TAJIMI PARAMETERS"

Chen, Huiguo, Ting Zhong, Guocui Liu, and Junru Ren. "Improvement of and Parameter Identification for the Bimodal Time-Varying Modified Kanai-Tajimi Power Spectral Model." Shock and Vibration 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/7615863.

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Based on the Kanai-Tajimi power spectrum filtering method proposed by Du Xiuli et al., a genetic algorithm and a quadratic optimization identification technique are employed to improve the bimodal time-varying modified Kanai-Tajimi power spectral model and the parameter identification method proposed by Vlachos et al. Additionally, a method for modeling time-varying power spectrum parameters for ground motion is proposed. The 8244 Orion and Chi-Chi earthquake accelerograms are selected as examples for time-varying power spectral model parameter identification and ground motion simulations to v

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Guenfaf, Lakhdar, and Mohamed Azira. "Generalized Minimum Variance Control for MDOF Structures under Earthquake Excitation." Journal of Control Science and Engineering 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/7458654.

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Control of a multi-degree-of-freedom structural system under earthquake excitation is investigated in this paper. The control approach based on the Generalized Minimum Variance (GMV) algorithm is developed and presented. Our approach is a generalization to multivariable systems of the GMV strategy designed initially for single-input-single-output (SISO) systems. Kanai-Tajimi and Clough-Penzien models are used to generate the seismic excitations. Those models are calculated using the specific soil parameters. Simulation tests using a 3DOF structure are performed and show the effectiveness of th

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Palazzo, Bruno, and Luigi Petti. "Stochastic Response Comparison between Base Isolated and Fixed-Base Structures." Earthquake Spectra 13, no. 1 (1997): 77–96. http://dx.doi.org/10.1193/1.1585933.

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Random response of linear Base Isolated Systems, mounted on elastomeric bearings, subject to horizontal random excitations, is analyzed in comparison with the one of the fixed-base structures. Considering the superstructure motion described by its first modal contribution, a two-degree-of-freedom equivalent linear model, under stationary Gaussian excitations modelled by the modified Kanai-Tajimi power density spectrum, has been used in the analysis. The response sensitivity to design parameters for the superstructure and the isolators have been evaluated for a wide range of parameters. Optimum

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Bhattacharyya, B., and S. Chakraborty. "Stochastic Sensitivity of 3D-Elastodynamic Response Subjected to Random Ground Excitation." International Journal of Structural Stability and Dynamics 03, no. 02 (2003): 283–97. http://dx.doi.org/10.1142/s0219455403000847.

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Abstract (sommario):

The present study deals with structural sensitivity of dynamic response having uncertainties in design parameters subjected to random earthquake loading. Earthquake is modeled as stationary random process defined by Kanai–Tajimi power spectral density. The uncertain design parameters are modeled as homogeneous Gaussian process and discretized through 3D local averaging. Subsequently the Cholesky decomposition of respective co-variance matrix is used to simulate random values of design parameters. The Neumann expansion blended with Monte Carlo simulation (NE-MCS) is explored for computing respo

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Azira, Mohamed, and Lakhdar Guenfaf. "Empirical multi-degree-of-freedom-generalized minimum variance control for buildings during earthquakes." Journal of Low Frequency Noise, Vibration and Active Control 37, no. 1 (2018): 3–30. http://dx.doi.org/10.1177/1461348418760878.

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Structural control of a multi-degree-of-freedom building under earthquake excitation is investigated in this paper. The ARMAX model calculation is developed for a linear representation of multi-degree-of-freedom structure. A control approach based on the generalized minimum variance algorithm is developed and presented. This approach is an empirical method to control the story unit regardless of the coupling with other stories. Kanai-Tajimi and Clough–Penzien models are used to generate the seismic excitations. Those models are calculated using the specific soil parameters. In order to test th

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Sun, Huang Sheng, and Li Nuo Cheng. "Connecting Parameter Study on Adjacent Structures Linked by Dampers." Advanced Materials Research 243-249 (May 2011): 3832–38. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.3832.

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In order to research the optimal parameters of dampers linking adjacent structures for seismic mitigation, two SDOF systems connected with visco-elastic damper (VED) are taken as research object and the primary structural vibration frequency ratio, connection stiffness and linking damping ratio as research parameters. Modified Kanai-Tajimi spectrum is selected to model the earthquake excitation. The peak distribution of power spectral density curves are analyzed, then the formulas of structural mean squared displacement (MSD) and research parameters is derived based on random vibration theory.

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Huang, Tian Li, and Wei Xin Ren. "Dynamic Reliability-Based Seismic Optimal Design of Base-Isolated Structures." Advanced Materials Research 243-249 (May 2011): 3765–69. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.3765.

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This paper presents a dynamic reliability-based optimization technique for the seismic design of base-isolated structures. Firstly, the governing equation of multi-degree-of-freedom base-isolated structures is established. Then, the superstructure is unfolded by the first mode. Considering that the damping is non-classical and the total base-isolation system is un-symmetric, the complex modal analysis is adopted to uncouple the governing equation and the analytical solutions of stochastic seismic response under the Kanai-Tajimi spectrum loading are obtained. Taking the ratio between the first-

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Huang, Tian Li, and Wei Xin Ren. "Dynamic Reliability-Based Seismic Optimal Design of Structures with Tuned Mass Damper." Advanced Materials Research 243-249 (May 2011): 3770–74. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.3770.

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This paper presents a dynamic reliability-based optimization technique for the seismic design of structures with tuned mass damper (TMD). Firstly, the governing equation of multi-degree-of-freedom structure with TMD is established. Then, the main structure is unfolded by the first mode. Considering that the damping is non-classical and the total main structure and TMD system is un-symmetric, the complex modal analysis is adopted to uncouple the governing equation and the analytical solutions of stochastic seismic response under the Kanai-Tajimi spectrum loading are obtained. Taking the ratio b

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MARANO, GIUSEPPE CARLO, GIUSEPPE ACCIANI, and LENONARDO GIUSEPPE CASCELLA. "NON-STATIONARY NUMERICAL COVARIANCE ANALYSIS OF LINEAR MULTI DEGREE OF FREEDOM MECHANICAL SYSTEM SUBJECT TO RANDOM INPUTS." International Journal of Computational Methods 04, no. 01 (2007): 173–94. http://dx.doi.org/10.1142/s0219876207001072.

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Structural response of linear multi degree of freedom (MDoF) system subject to random Gaussian dynamic actions is defined by mean of vector and covariance matrix in state space. In case of non-stationary inputs, second-order spectral moments evaluation needs the solution of the so-called Lyapunov matrix differential equation. In this work a numerical scheme for its resolution is proposed, with reference to input processes modeled as linear filtered white noise with time-varying parameters, which is a common situation in amplitude and frequency variable loads. Numerical computational effort is

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Wang, Shiyu, and Ying Lei. "A Joint State-Parameter Identification Algorithm of a Structure with Non-Diagonal Mass Matrix Based on UKF with Unknown Mass." Buildings 12, no. 6 (2022): 826. http://dx.doi.org/10.3390/buildings12060826.

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Inaccurate mass estimates have been recognized as an important source of uncertainty in structural identification, especially for large-scale structures with old ages. Over the past decades, some identification algorithms for structural states and unknown parameters, including unknown mass, have been proposed by researchers. However, most of these identification algorithms are based on the simplified mechanical model of chain-like structures. For a chain-like structure, the mass matrix and its inverse matrix are diagonal matrices, which simplify the difficulty of identifying the structure with

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Più fonti

Tesi sul tema "KANAI AND TAJIMI PARAMETERS"

Rossato, Luciara Vellar. "Otimização de amortecedores de massa sintonizados em estruturas submetidas a um processo estacionário." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/163246.

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Atualmente as estruturas estão sendo avaliadas para um maior número de ações em relação há algumas décadas. Esta melhoria ao longo da fase de concepção é dada devido ao fato de que está se tornando mais competitivo o fornecimento de estruturas leves e esbeltas, sendo solicitados, cada vez mais, projetos com menor custo de implantação. Devido a isto, é necessário avaliar as estruturas não apenas sujeitas a cargas estáticas, mas também a carregamentos dinâmicos. As ações dinâmicas que atuam sobre uma estrutura podem ser muito mais prejudiciais do que as estáticas quando não são bem consideradas

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NEGI, NIVEDITA. "DETERMINATION OF KANAI AND TAJIMI PARAMETER USING ADAPTIVE FILTER." Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/14679.

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Abstract (sommario):

Kanai – Tajimi parameters are used to characterize the strong ground motion. These parameters for different earthquake data are estimated from power spectral density vs frequency graph using spectral moments. In this thesis first earthquake signal is predicted from Adaptive filter then PSD vs frequency graph is obtained using low pass filter. In order to monitor, the change with earthquake shaking, the Kanai –Tajimi parameters (i.e natural frequency and damping ratio of soil layer) are also identified based on windowed data of earthquake using a moving time window. This thesis provides a

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Capitoli di libri sul tema "KANAI AND TAJIMI PARAMETERS"

Lin, Y. K., and Y. Yong. "Evolutionary Kanai-Tajimi Type Earthquake Models." In Lecture Notes in Engineering. Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-83252-9_11.

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Alotta, G., M. Di Paola, and A. Pirrotta. "The fractional Tajimi-Kanai model of earthquake ground motion." In Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures. CRC Press, 2014. http://dx.doi.org/10.1201/b16387-157.

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Atti di convegni sul tema "KANAI AND TAJIMI PARAMETERS"

Abbiati, Giuseppe, Oreste S. Bursi, Luca Caracoglia, Rocco Di Filippo, and Vincenzo La Salandra. "Probabilistic Seismic Response of Coupled Tank-Piping Systems." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63292.

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Abstract (sommario):

Dynamic analysis is an integral part of seismic risk assessment of industrial plants. Such analysis often neglects proper coupling between structures of coupled systems, which introduces uncertainty into the system and may lead to erroneous results, e.g., incorrect fragility curves, in comparison with the actual behavior of the analyzed structure. Hence, it is important to study the effect of uncertainties on the dynamic characteristics of a system, when coupling effects are both neglected and included. Along this line, this paper intends to define and compare the fragility curves of both an i

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Yanik, Arcan, Unal Aldemir, and Mehmet Bakioglu. "Time Delay Consideration on a New Active Control Algorithm." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46091.

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In the area of active control of structures, time delay consideration is an important parameter which must be taken into consideration for realistic numerical models. In this research, the performance of a new active control algorithm for several time delays under two different earthquake excitations was investigated numerically. The proposed performance index does not require a priori knowledge of seismic input and the solution of the nonlinear matrix Riccati equation to apply the control forces [1,2]. The proposed control introduces the seismic energy term into the performance index so that

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To, C. W. S., and H. W. Hung. "Discrete Evolutionary Spectra of Discretized Beams and Plates Under Time-Frequency Modulated Random Excitations." In ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0340.

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Abstract Various methods that employed the theory of evolutionary spectral density of Priestley (1965) have been proposed for the non-stationary random response analysis of linear time-invariant multi-degree-of-freedom systems (Hammond, 1968, Fugimori and Lin, 1973, To, 1982, Shihab and Preumont, 1987, To and Hung, 1989). In this paper the method presented earlier by the authors (1989) is further applied to discrete or discretized systems under time-frequency moduated random excitations in which the white noise processes are replaced by band-limited white noise processes and Kanai-Tajimi model

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Spanos, Pol D., and Scott M. Miller. "Hilbert Transform Generalization of a Classical Random Vibration Integral." In ASME 1993 Design Technical Conferences. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/detc1993-0046.

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Abstract Integrals which represent the spectral moments of the stationary response of a linear, time-invariant system under random excitation are considered. It is shown that these integrals can be determined through the solution of linear algebraic equations. These equations are derived by considering differential equations for both the autocorrelation function of the system response and its Hilbert transform. The method can be applied to determine both even order and odd order spectral moments. Furthermore, it provides a potent generalization of a classical formula used in control engineerin

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Mochio, Takashi. "Stochastic Floor Response Spectra for an Actively-Controlled Secondary System." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57252.

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The purpose of this paper is to propose a newly floor response spectra (FRS) in order to evaluate simply the structural response of the actively-controlled secondary system subjected to earthquake. This paper adopts a linear single-degree-of-freedom system as a main structure and an active mass damper (AMD) system as the active control technology. Also, the earthquake wave is modeled as product of a non-stationary envelope function and a stationary Gaussian random process of which power spectral density is equal to the Kanai-Tajimi spectrum. The control design is executed by using linear quadr

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Karadeniz, H. "Stochastic Earthquake-Analysis of Underwater Storage Tanks." In ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2007. http://dx.doi.org/10.1115/omae2007-29190.

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In this paper, the problem and analysis method of underwater storage tanks resting on a horizontal seabed is presented under stochastic earthquake loading. The tank is axi-symmetrical and has a flexible wall/roof. The finite element method is used for the response solution. A solid axi-symmetrical FE has been formulated to idealize the tank whereas an axi-symmetrical fluid element is used for the idealization of the fluid domain. The Eulerian formulation of the fluid system is used to calculate interactive water pressure acting on the tank during the free motion of the tank and earthquake moti

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Bursi, Oreste S., Giuseppe Abbiati, Luca Caracoglia, Vincenzo La Salandra, Rocco Di Filippo, and Md Shahin Reza. "Dynamic Response of Coupled Tanks and Piping Systems Under Seismic Loading." In ASME 2015 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/pvp2015-45131.

Testo completo

Abstract (sommario):

Dynamic analysis is an integral part of seismic risk assessment of industrial plants. Such analysis often neglects actual boundary conditions or proper coupling between structures of coupled systems, which introduces uncertainty into the system and may lead to erroneous results, e.g., an incorrect fragility curve, in comparison with the actual behaviour of the analyzed structure. Hence, it is important to study the effect of uncertainties on the dynamic characteristics of a system, when coupling effects are neglected. Along this line, this paper investigates the effects of uncertain boundary c

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