Results 221 to 230 of about 14,489,574 (279)

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
openaire   +1 more source

Strength and ductility of laterally confined concrete

Structural Concrete, 2021
The objective of this paper was to evaluate the strength and ductility of laterally confined concrete. To reach the purpose, the effects of the investigated parameters including concrete strength, the volumetric ratio, tensile strength, configurations of
Wei Chang, Meijing Hao, W. Zheng
semanticscholar   +1 more source

Simultaneous enhancement of strength and ductility of body-centered cubic TiZrNb multi-principal element alloys via boron-doping

Journal of Materials Science & Technology, 2020
Body-centered cubic (BCC) multi-principal element alloys (MPEAs) have intrinsic high strength but poor ductility, which greatly limits their potential applications. Here we present the boron-doping strategy to enhance the strength and ductility of TiZrNb
Jingyu Pang, Hongwei Zhang, Zhang Long, Zhengwang Zhu, H. Fu, L. Hong, Wang Aimin, Zhengkun Li, Haifeng Zhang   +8 more
semanticscholar   +1 more source

Improving ductility of a Mg alloy via non-basal slip induced by Ca addition

International journal of plasticity, 2019
Addition of a small amount of Ca improves the ductility of Mg alloys. However, the mechanism underlying this effect is not well understood. In this work, tensile testing of an extruded Mg−0.47 wt% Ca alloy was conducted inside a scanning electron ...
Gaoming Zhu, Leyun Wang, Hao Zhou, Jinhui Wang, Yao Shen, Peng Tu, Hong Zhu, Wei Liu, P. Jin, Xiaoqin Zeng   +9 more
semanticscholar   +1 more source

A new strategy of tailoring strength and ductility of CoCrFeNi based high-entropy alloy

, 2020
In this paper, a new strategy of high entropy alloy is presented, high strength and promising ductility are realized by precipitation strengthening mechanism. The structure of nano-L12 precipitates on the FCC high entropy alloy (HEA) matrix is formed, by
F. Zheng, Guan-nan Zhang, Xiu-juan Chen, Xiao Yang, Zeng-chao Yang, Yong Li, Jiangtao Li   +6 more
semanticscholar   +1 more source

Ductility reduction factors for earthquake design

Engineering Structures, 1980
Abstract This paper shows how, given a fixed set of design limitations, proper use of ductility values for different classes of structures enables an economic design to be developed for earthquake loadings.
openaire   +1 more source

Seismic force modification factor for ductile structures

Journal of Zhejiang University-SCIENCE A, 2005
The earthquake forces used in design codes of buildings should be theoretical determinable. This work examines the seismic force modification factorR based on elastic-plastic time-history earthquake analysis of SDOF systems, wherein the hysteresis models are elastic-perfectly-plastic (EPP), elastic-linearly-hardening (ELH), shear-slipped and bilinear ...
Gen-shu Tong, Huang Jin-qiao
openaire   +1 more source

Controlling Factors for the Brittle-to-Ductile Transition in Tungsten Single Crystals

Science, 1998
Materials performance in structural applications is often restricted by a transition from ductile response to brittle fracture with decreasing temperature. This transition is currently viewed as being controlled either by dislocation mobility or by the nucleation of dislocations.
, Gumbsch, , Riedle, , Hartmaier, , Fischmeister   +3 more
openaire   +2 more sources

Ultra-fine grained Mg-Zn-Ca-Mn alloy with simultaneously improved strength and ductility processed by equal channel angular pressing

Journal of Alloys and Compounds, 2019
The influence of equal channel angular pressing (ECAP) on the microstructure, texture evolution and mechanical properties of extruded Mg-5.0Zn-0.5Ca-0.3Mn (weight percent) alloy has been systematically investigated in the current study.
L. Tong, Jian-Ge Chu, Zhonghao Jiang, S. Kamado, M. Zheng   +4 more
semanticscholar   +1 more source

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 ...
openaire   +1 more source