Results 271 to 280 of about 50,824 (306)

Reduction of structural ductility factor due to variability of steel properties

Engineering Structures, 2000
Abstract The lower and upper bounds for the variability of the mechanical properties of two conventional steel grades (nominal yield stress F y =235 and 315 MPa) are determined from mill coupon test results. Reduction of the ductility factors due to the differences between the actual yield stress and the nominal design value for the compact plate ...
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Effect of foundation flexibility on ductility reduction factors for R/C stack-like structures

Earthquake Engineering and Engineering Vibration, 2011
The most important parameter used to determine force reduction factors in force-based design procedures adopted in the current seismic codes is the structural ductility. For a structure supported on a flexible foundation, the ductility factor could be affected by foundation compliances.
Amir M. Halabian, Shabnam Kabiri
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Ductility reduction factor and collapse mechanism evaluation of a new steel knee braced frame

Structure and Infrastructure Engineering, 2015
In this study, the suitability of a new structural system called the knee braced frames (KBFs) is investigated for seismic resistant steel structures. In these structural systems, ends of beams are connected to columns by hinges (simple connection) instead of rigid connections, and ends of knee braced elements are connected to columns and beams by ...
Abazar Asghari, Amir H. Gandomi
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Modification of Ductility Reduction Factor for Strength Eccentric Structures Subjected to Pulse-Like Ground Motions

Journal of Earthquake Engineering, 2015
This article investigates the ductility reduction factors for RC eccentric frame structures subjected to pulse-like ground motions. The structural models are with the strength eccentricities which are much disadvantageous than the stiffness eccentricities during the inelastic response range.
Jian Cai, Guobin Bu, Jing Zhou, Zhiliang Zuo, Chun Yang, Qingjun Chen   +5 more
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Evaluation of Response Reduction Factor for RCC Moment Resisting Frame with Ductile Shear Wall

2020
Most of the buildings are irregular and their behavior during the event of earthquake is significantly different than that of regular buildings. The actual base shear which act on the building is much higher than the designed base shear. That is why it is uneconomical to design the building for the actual base shear. The building is expected to undergo
Akash Soni, Manohari P. Kulkarni, Shardul G. Joshi   +2 more
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Modification of Ductility Reduction Factor for Vertically Irregular Structures Subjected to Pulse-Like Ground Motions

Advances in Structural Engineering, 2013
This paper reports on investigations into seismic ductility reduction factors for vertically irregular multi-degree-of-freedom (MDOF) systems subjected to pulse-like ground motions. Ductility reduction factors of irregular MDOF systems are obtained by modifying those of reference regular MDOF systems through a modification factor.
Jing Zhou, Guobin Bu, Huiying Wang, Jian Cai   +3 more
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Influence of High Mode Effects on Ductility Reduction Factors for MDOF Shear-Type Structures

Applied Mechanics and Materials, 2014
The influences of high mode effect on ductility reduction factors for multi-degree-of-freedom (MDOF) systems are studied by modifying ductility reduction factors for equivalent single-degree-of-freedom (SDOF) systems. Based on MDOF lumped-mass shear-type models, nonlinear dynamic time history analysis are performed to investigate the influence of ...
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An evaluation of the ductility reduction factor q in the 1976 regulations for the federal district of mexico

Earthquake Engineering & Structural Dynamics, 1989
AbstractThe reduction of the spectral accelerations to account for inelastic response of structures as given by the 1976 Regulations for the Federal District of Mexico is evaluated relative to the records obtained at the Secretaria de Communicaciones y Transportes (SCT) during the September 19, 1985 Mexico earthquake.
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Tailoring planar slip to achieve pure metal-like ductility in body-centred-cubic multi-principal element alloys

Nature Materials, 2023
Liang Wang, Jun Ding, Tianyi Li
exaly  

Gradient cell–structured high-entropy alloy with exceptional strength and ductility

Science, 2021
Qingsong Pan, Liangxue Zhang, Rui Feng
exaly