Results 271 to 280 of about 68,748 (312)

Determination of ductility factor considering different hysteretic models

Earthquake Engineering & Structural Dynamics, 1999
In current seismic design procedures, base shear is calculated by the elastic strength demand divided by the strength reduction factor. This factor is well known as the response modification factor, R, which accounts for ductility, overstrength, redundancy, and damping of a structural system.
Li Hyung Lee, Sang Whan Han, Young Hun Oh   +2 more
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Inelastic Displacement Amplification Factor for Ductile Structures with Constant Strength Reduction Factor

Advances in Structural Engineering, 2010
Based on elastic-plastic time-history earthquake analysis of the single degree of freedom (SDOF) system, the inelastic displacement amplification factor Cd2 of the elastic-perfectly plastic (EPP) model with the same yield strength reduction was investigated for different normalized periods T/TgR, site types, strength reduction factors R, damping ...
Yongfeng Zhao, Genshu Tong
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Ductile Iron Corrosion Factors to Consider and Why

New Pipeline Technologies, Security, and Safety, 2003
It is important to correctly evaluate corrosion risks and select and implement appropriate corrosion control methods in order to meet desired pipe reliability and service life targets and protect original investments at minimum life cycle costs. Life cycle cost analysis indicates that tight-bonded coatings and cathodic protection are good, economical ...
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Factors Affecting Ductile Fracture in Offshore Gas Pipelines

Offshore Technology Conference, 1982
Abstract This paper presents the results of experimental research conducted during the past three years with the objective of understanding ductile fracture propagation in the offshore environment. Experiments have been conducted to examine decompression phenomenon inside the carrier pipe when the exhausting gas is ...
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Calculation Method of Lateral Strengths and Ductility Factors of Constructions with Shear Walls of Different Ductility

AIP Conference Proceedings, 2008
For seismic design, ductility‐related force modification factors are named R factor in Uniform Building Code of U.S, q factor in Euro Code 8 and Ds (inverse of R) factor in Japanese Building Code. These ductility‐related force modification factors for each type of shear elements are appeared in those codes. Some constructions use various types of shear
Nobuyoshi Yamaguchi, Masato Nakao, Masahide Murakami, Kenji Miyazawa, Adolfo Santini, Nicola Moraci   +5 more
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Physical factors controlling the ductility of bulk metallic glasses

Applied Physics Letters, 2008
In order to identify key physical factor controlling the deformation and fracture behavior of bulk metallic glasses (BMGs), we compiled and analyzed the elastic moduli and compressive ductility for BMGs. In addition, new modulus data were generated in the critical ranges in order to facilitate the analysis. We have found that the intrinsic ductility of
Y. Liu, H. Wu, C. T. Liu, Z. Zhang, V. Keppens   +4 more
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Ductility factors of symmetrical structures with restricted inelasticity

The Structural Design of Tall and Special Buildings, 2007
AbstractA simple elasto‐plastic analysis of symmetrical buildings composed of different types of bents is presented. Plasticity in bents is assumed to be restricted to the beams, where significant curvature ductility factors may be attained without loss of strength, and the behaviour of inelastic structures may be traced from elastic to ultimate ...
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Ductility Reduction Factors for Masonry-Infilled Reinforced Concrete Frames

Earthquake Spectra, 2015
Masonry-infilled reinforced concrete (RC) frames are popular structural systems; however, there is much uncertainty in their response under seismic loads. Using the data from past experimental studies, a simple force-deformation model with three control points was developed. The effect of the model parameters on the ductility reduction factor (DRF) and
Manish Kumar, Durgesh C. Rai, Sudhir K. Jain   +2 more
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Factors governing strength and ductility of metallic composites

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 2013
Two commercial Zn–Al alloys, constituting a natural composite consisting of ductile fibres of face-centred cubic aluminium in the less ductile close-packed hexagonal Zn-rich matrix, variously subjected to warm rolling and warm equal channel angular processing, were investigated to examine the factors governing strength and ductility.
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Beam Strength Enhancement at Design Ductility Factor Demands

Journal of Structural Engineering, 1990
A refined bending‐analysis model is presented that accurately predicts available experimental results. By means of this model, the relations of the ultimate‐to‐yielding moment ratio versus the longitudinal reinforcement ratio are deduced for a beam that is rectangular in cross section with two reinforcement layers. Two values of the curvature‐ductility
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