Results 11 to 20 of about 367,641 (251)

Special Standard Static Space-Times [PDF]

open access: yes, 2004
Essentially, some conditions for the Riemannian factor and the warping function of a standard static space-time are obtained in order to guarantee that no nontrivial warping function on the Riemannian factor can make the standard static space-time ...
Dobarro, Fernando, Unal, Bulent
core   +1 more source

Numerical Study of Progressive Collapse in Intermediate Moment Resisting Reinforced Concrete Frame Due to Column Removal [PDF]

open access: yesCivil Engineering Infrastructures Journal, 2014
Progressive collapse is a chain reaction of failures propagating throughout a portion of the structure disproportionate to the original local failure occurring when a sudden loss of a critical load‐bearing element initiates a structural element failure ...
Seyed Mehdi Zahrai, Alireza Ezoddin
doaj   +1 more source

Assessment of FEMA356 nonlinear static procedure and modal pushover analysis for seismic evaluation of buildings [PDF]

open access: yes, 2012
Nonlinear static analysis as an essential part of performance based design is now widely used especially at design offices because of its simplicity and ability to predict seismic demands on inelastic response of buildings.
Khoshnoud, Hamid Reza   +1 more
core   +1 more source

Seismic Evaluation and Retrofitting of an Existing Buildings-State of the Art

open access: yesمجلة النهرين للعلوم الهندسية, 2021
In this study, previous researches were reviewed in relation to the seismic evaluation and retrofitting of an existing building. In recent years, a considerable number of researches has been undertaken to determine the performance of buildings during the
Haider Ali Abass, Husain Khalaf Jarallah
doaj   +1 more source

Energy harvesting from the nonlinear oscillations of magnetic levitation [PDF]

open access: yes, 2009
This paper investigates the design and analysis of a novel energy harvesting device that uses magnetic levitation to produce an oscillator with a tunable resonance. The governing equations for the mechanical and electrical domains are derived to show the
Arnold   +17 more
core   +2 more sources

Numerical And Experimental Investigations of Nonlinearity Behaviour In A Slender Cantilever Beam

open access: yesMATEC Web of Conferences, 2018
Nonlinear problem is always occur in slender structures that are usually characterized by large displacements and rotations but small strains. Linear design assumption could lead to premature failure if the structure behaves nonlinearly.
Bahari A. R.   +4 more
doaj   +1 more source

Case study and Evaluation of two steel bracing systems in the Bam earthquake and methods of retrofitting [PDF]

open access: yesJournal of Structural and Construction Engineering, 2018
In the seismically active countries such as Iran, there are many structures that have been designed and constructed in recent years that do not conform to the terms and provisions of the design codes.
Masoud Mirtaheri   +2 more
doaj   +1 more source

Well-posedness of the fully coupled quasi-static thermo-poro-elastic equations with nonlinear convective transport [PDF]

open access: yes, 2018
This paper is concerned with the analysis of the quasi-static thermo-poroelastic model. This model is nonlinear and includes thermal effects compared to the classical quasi-static poroelastic model (also known as Biot's model).
Ahmed, Elyes   +3 more
core   +2 more sources

Progressive Collapse Analysis of Moments Resisting Frames with Cruciform Columns Semi-Buried in Concrete [PDF]

open access: yesمجله مدل سازی در مهندسی, 2021
Local damage caused by the removal of one or more elements in structures lead to progressive collapse and results in partly damage to the structure, increasing damage rate and total collapse of the structure.
, Ashkan KhodaBandehLou   +1 more
doaj   +1 more source

IMPAβ: Incremental Modal Pushover Analysis for Bridges

open access: yesApplied Sciences, 2020
In the present study, the incremental modal pushover analysis (IMPA), a pushover-based approach already proposed and applied to buildings by the same authors, was revised and proposed for bridges (IMPAβ). Pushover analysis considers the effects of higher
Alessandro Vittorio Bergami   +4 more
doaj   +1 more source

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