Results 21 to 30 of about 657,951 (302)

On shakedown, ratchet and limit analysis of defective pipeline [PDF]

, 2012
In this study, the limit load, shakedown and ratchet limit of a defective pipeline subjected to constant internal pressure and a cyclic thermal gradient are analyzed.
Chen, Chen, Chen, Chen, Chen, Chen, Chen, Haofeng Chen, James Ure, Koiter, Mackenzie, Melan, Ponter, Seshadri, Staat, Tianbai Li, Vu, Weihang Chen   +17 more
core   +1 more source

A New Unified Solution for Circular Tunnel Based on a Four-Stage Constitutive Model considering the Intermediate Principal Stress

Advances in Civil Engineering, 2018
Based on the triaxial test, the elasto-perfectly plastic strain-softening damage model (EPSDM) is proposed as a new four-stage constitutive model. Compared with traditional models, such as the elasto-brittle-plastic model (EBM), elasto-strain-softening ...
Liang Chen, Xianbiao Mao, Yanlong Chen, Ming Li, Yang Hao, Ding Liu   +5 more
doaj   +1 more source

Modeling strain rate sensitivity and high temperature deformation of Mg-3Al-1Zn alloy

Journal of Magnesium and Alloys, 2019
Increasing the plastic deformation temperature of Mg alloys results in higher strain rate sensitivity, easier activation of secondary slip modes, and impeded twinning. In this study, the strain rate sensitivity is estimated for each deformation mode, and
Adrien Chapuis, Qing Liu
doaj   +1 more source

Microscopic Observation of Plastic Deformation of Polycrystalline Aluminum by Laser Scanning Microscope [PDF]

, 2001
Free surface of polycrystalline metal becomes roughened after plastic deformation. The surface roughening is closely related to the inhomogeneity of polycrystalline metals, that is, to the inhomogeneous plastic deformation of respective grains.
Abe, Takeji, Akagi, Yasuo, Hualin, Song, Shimizu, Ichiro   +3 more
core   +1 more source

Why is local stress statistics normal, and strain lognormal?

Materials & Design, 2021
In the present study we elucidate the nature of local strain statistics evolution during tensile deformation in polycrystalline materials. A rate-independent formulation was implemented within a crystal plasticity framework by the means of representative
Jingwei Chen, Alexander M. Korsunsky
doaj   +1 more source

Investigation of strain measurements in (curved) wide plate specimens using digital image correlation and finite element analysis [PDF]

, 2012
Some pipelines face global plastic straining due to the nature of their installation process or harsh environmental conditions during operation. The ability of the girth welds to withstand these plastic strains is often evaluated on the basis of wide ...
De Waele, Wim, Denys, Rudi, Hertelé, Stijn, Verstraete, Matthias   +3 more
core   +1 more source

Plastic strain curl theory [PDF]

Acta Mechanica, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xia, S., Wang, T. C.
openaire   +1 more source

Plastic load evaluation for a fixed tube sheet heat exchanger subject to proportional loading [PDF]

, 2012
The plastic load of pressurised components can be calculated based on both the twice elastic slope and tangent methods. Both methods are problematic since they rely on parameters that are localised and therefore have a strong dependency on the gradient ...
Behseta, Khosrow, Hamilton, Robert, Mackenzie, Donald   +2 more
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

A Study on Sandstone Damage Model Based on the Correlation Between Energy Dissipation and Plastic Strain

Applied Sciences
The process of rock damage and failure is accompanied by the dissipation of energy and an increase in plastic strain. This study attempts to determine the relationship between dissipated energy and plastic strain in sandstone during the damage and ...
Tianbai Zhou, Xiaoyu Zhang, Yongbo Cai, Long Wang, Qixian Li   +4 more
doaj   +1 more source