Results 81 to 90 of about 70,888 (199)

Low unit strength masonry: computational modelling approaches [PDF]

open access: yes, 2014
Masonry is characterized by the large variability of its components. Parameters like strength, bond and workmanship defects strongly influence the performance of the overall structure.
Manfredi, G   +15 more
core  

New European Union method for the design of reinforced concrete structures exposed to fire temperatures

open access: yesTechnological and Economic Development of Economy, 2006
The analysis of a method for the design of reinforced concrete structures exposed to fire temperatures is presented in the article. The main essential factors which must be evaluated in the design of structures and their parts to provide their adequate ...
Bronius Jonaitis, Vytautas Papinigis
doaj   +1 more source

Damping ratio of reinforced concrete walls under limited damage from shaking table test and data‐driven modeling

open access: yesStructural Concrete, EarlyView.
Abstract Accurate estimation of the damping ratio is critical for evaluating floor response spectra and equipment seismic demands in nuclear power plant structures. This study investigates the elastic damping ratio of reinforced concrete walls under limited damage states through shaking table tests and data‐driven modeling.
Hyeon‐Keun Yang, Min‐Kyu Kim
wiley   +1 more source

Influence of longitudinal reinforcement on development of normal cracks

open access: yesJournal of Civil Engineering and Management, 2005
Using a model of normal crack propagation in reinforced concrete members, an analytical expression is presented for the stress intensity factor defining the intensity of stress in area at the crack tip. This factor is in linear relationship to the stress
Vidmantas Jokūbaitis, Petras Pukelis
doaj   +1 more source

Simplified analysis of concentrically loaded reinforced concrete columns

open access: yesStructural Concrete, EarlyView.
Abstract Reinforced concrete columns subjected to concentric and eccentric compression loads are typically treated in an identical manner, taking into account both the imperfect shape, creep, and the second order effects, as described for example in fib Model Code 2020 and Eurocode 2.
Lili Eszter Hlavicka‐Laczák   +1 more
wiley   +1 more source

Integrated Alpha–Gamma Radiation Exposure From Natural Radionuclides in Cement and Gypsum Production: Implications for Occupational Lung Cancer Risk

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Natural radionuclides in cement and gypsum production materials pose significant risks of occupational radiation exposure that are not well documented in Iraqi Kurdistan. This study quantifies alpha and gamma radiation levels from naturally occurring radioactive materials, specifically 222Rn, 238U, 232Th, and 40K, in cement and gypsum samples ...
Adil M. Hussien   +4 more
wiley   +1 more source

‘Enthusiasts’ and ‘Fanatics’: The Decembrists as a Case Study in French Influence on Russian Culture, Emotions and Thought

open access: yesHistory, EarlyView.
Abstract Participants in Russia's 1825 Decembrist uprising against the Tsarist regime were, quite literally, a case study in French cultural influence upon Russia. This is particularly true as it relates to Russia's emotional cultures. Although this has not, traditionally, been the primary focus of historical analysis of this event (in Soviet or ...
ADAM COKER
wiley   +1 more source

Nonlinear analysis of earthquake fault rupture interaction with historic masonry buildings [PDF]

open access: yes, 2015
The response of historic masonry buildings to tectonic ground displacements is studied through analysis of a simple yet representative soil-foundation-masonry wall system.
Gazetas, George   +2 more
core   +1 more source

A New Model of Feeding Biomechanics Based on Tied‐Arch Principles

open access: yesIntegrative Zoology, EarlyView.
This new biomechanical model explains the major stress and strain patterns generated through the cranium during biting. The model proposes that the cranium resolves bite‐induced reaction forces through arcs of compressive stress that span the cranial structure between biting teeth and both jaw joints.
D. Rex Mitchell
wiley   +1 more source

A F.E. UPPER BOUND LIMIT ANALYSIS MODEL FOR MASONRY CURVED AND 3D STRUCTURES, WITH AND WITHOUT FRPREINFORCEMENT [PDF]

open access: yes, 2010
The aim of this thesis is to propose a new efficient numerical tool, based on the kinematic theorem of limit analysis, for the study of masonry shell and 3D structures with or without FRP reinforcement. The approach consists of two steps.
Milani, Enrico
core  

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