Evaluation of seismic responses of an arch dam under non-uniform ground motion using random vibration [PDF]
Journal of Structural and Construction Engineering, 2020 To investigate the seismic responses of dams due to ground non uniform displacements, the records of earthquake displacements are required. Such data is seldom recorded during a specific earthquake and in the most cases the recorded data in not ...
Reza Tarinejad +4 more
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Extended Coherence Function on The Topography for Generated Non-Uniform Record By Using Stochastic Method [PDF]
Journal of Structural and Construction Engineering, 2021 This study focuses on modeling spatial variation of earthquake ground motion using numerical methods. wave passage effect, incoherence effect and local site conditions effect are the effective parameters on this phenomenon which its investigated in ...
mohsen isari +2 more
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The Effects of Underground Structure on the Free Field Displacement Under Uniform and Non-Uniform Excitation [PDF]
پژوهشهای زیرساختهای عمرانی, 2019 In this study, the effects of a subway station on the surface ground motion subjected to uniform and the non-uniform propagating seismic wave is investigated. Numerical analysis is carried out by finite difference method using FLAC soft-ware.
Mohsen Isari +2 more
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Investigating the Effect of Pseudo-Static Components on Bridge Structures under Multiple Support Excitations Using Conditional Simulated Records [PDF]
Journal of Rehabilitation in Civil Engineering, 2020 Long-span bridges, as vital structures, play an important role in economic development. Previous studies revealed that the seismic responses of such structures, under non-uniform excitations, are different from the same result due to uniform excitations.
Aziz Hosseinnezhad, Amin Gholizad
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Vibration and Reliability Analysis of Non-Uniform Composite Beam under Random Load
Applied Sciences, 2022 Non-uniform structures and composite materials have advantages in engineering applications, such as light weight design, multi-functionality, and better buckling/flutter load capacity.
Peng Wang, Nan Wu, Zhili Sun, Haitao Luo
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Seismic response of cable stayed bridges under multi support excitation [PDF]
Journal of Structural and Construction Engineering, 2017 In this Study, the seismic response of cable stayed bridges have been evaluated under multi-support excitations. There are three sources that cause the earthquake wave characteristics change during its propagation path.
Mahmoud Reza ُُShiravand +2 more
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Non-uniform along thickness spin excitations in magnetic vortex-state nanodots [PDF]
Low Temperature Physics, 2020 We summarize our experimental findings in the arrays of Ni80Fe20 circular nanodots with diameter 300 nm and thickness 20 nm ≤ L ≤ 100 nm, probed by broadband ferromagnetic resonance spectroscopy in the absence of external magnetic field. Spin excitation modes related to the vortex core gyrotropic dynamics were observed in the gigahertz frequency range.
G. N. Kakazei +5 more
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Seismic response of concrete arch dams due to different non-uniform ground motion models [PDF]
Numerical Methods in Civil Engineering, 2019 This paper investigates the effects of spatially variable (non-uniform) seismic excitation incorporating incoherency effect on earthquake-induced stresses of arch dams.
M. Dehghani +2 more
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Side lobe reduction of a concentric circular antenna array using genetic algorithm [PDF]
Serbian Journal of Electrical Engineering, 2010 A concentric circular antenna array (CCAA) consists of elements positioned on the periphery of imaginary circles on a plane having a common centre and different radii.
Mandal Durbadal +3 more
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Novel Design Techniques for the Fermat Spiral in Antenna Arrays, for Maximum SLL Reduction
Micromachines, 2022 This paper presents novel design techniques for the Fermat spiral, considering a maximum side lobe level (SLL) reduction. The array system based on a Fermat spiral configuration considers techniques based on uniform and non-uniform amplitude excitation ...
Kleiverg Encino +3 more
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