Results 31 to 40 of about 760,552 (308)

Vertical Stress Prediction for Zubair Oil Field/ Case Study

open access: yesJournal of Engineering, 2023
Predicting vertical stress was indeed useful for controlling geomechanical issues since it allowed for the computation of pore pressure for the formation and the classification of fault regimes.
Ali K. Faraj , Hassan A. Abdul Hussein
doaj   +1 more source

Mechanics Modeling of Residual Stress Considering Effect of Preheating in Laser Powder Bed Fusion

open access: yesJournal of Manufacturing and Materials Processing, 2021
This study aimed at the investigation of the effect of substrate temperature on residual stress in laser powder bed fusion using a physics-based analytical model.
Elham Mirkoohi   +5 more
doaj   +1 more source

Gradient approach for the evaluation of the fatigue limit of welded structures under complex loading [PDF]

open access: yesFracture and Structural Integrity, 2017
Welded ‘T-junctions’ are tested at different load ratio for constant and variable amplitude loading. Fatigue results are analyzed through the type of fatigue mechanisms depending on the loading type.
Y. Nadot, D. Halm, F. Dal Cero Coelho
doaj   +2 more sources

Stress‒magnetization of the state of flange damage to a bridge steel box beam based on magnetic memory detection

open access: yes工程科学学报, 2022
Metal magnetic memory detection technology has been widely studied because it can identify damage to ferromagnetic components quickly and conveniently, and it is considered to have the ability to identify hidden damage.
San-qing SU   +5 more
doaj   +1 more source

Nonlinear flexure mechanics of beams: stress gradient and nonlocal integral theory

open access: yesMaterials Research Express, 2021
In order to study the intrinsic size-effects, the stress gradient theory is implemented to a nano-scale beam model in nonlinear flexure. The nonlocal integral elasticity model is considered as a suitable counterpart to examine the softening behavior of ...
Mahdad Fazlali   +2 more
doaj   +1 more source

Variational Formulations and Isogeometric Analysis of Timoshenko–Ehrenfest Microbeam Using a Reformulated Strain Gradient Elasticity Theory

open access: yesCrystals, 2022
This paper presents a novel non-classical Timoshenko–Ehrenfest beam model based on a reformulated strain gradient elasticity theory. The strain gradient effect, couple stress effect, and velocity gradient effect for vibration are included in the new ...
Shuohui Yin   +4 more
doaj   +1 more source

In Situ Stress Determination Based on Acoustic Image Logs and Borehole Measurements in the In-Adaoui and Bourarhat Hydrocarbon Fields, Eastern Algeria

open access: yesEnergies, 2023
The study of in situ stress from image logs is a key factor for understanding regional stresses and the exploitation of hydrocarbon resources. This work presents a comprehensive geomechanical analysis of two eastern Algerian hydrocarbon fields to infer ...
Rafik Baouche   +3 more
doaj   +1 more source

The Influence of Temperature Variations on Rigid Pavement Concrete Slabs

open access: yesJournal of the Civil Engineering Forum, 2023
This research aims to assess the effect of temperature gradient developed within the concrete slab of rigid pavement, and to investigate its impact when incorporated with the traffic load, and the heat transfer pattern.
Anno Mahfuda   +2 more
doaj   +1 more source

A Comparative Study of Gradient Descent Method and a Novel Non-Gradient Method for Structural Shape Optimization [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2022
Motivated by the works on non-gradient techniques in the domain of shape optimization of the structure, the present work intends to suggest a novel non-gradient procedure for shape optimization of structures and compare it to an existing gradient-based ...
Ishan Jha   +3 more
doaj   +1 more source

Size-Dependent Buckling Analysis of Microbeams by an Analytical Solution and Isogeometric Analysis

open access: yesCrystals, 2022
This paper proposes an analytical solution and isogeometric analysis numerical approach for buckling analysis of size-dependent beams based on a reformulated strain gradient elasticity theory (RSGET).
Shuohui Yin   +4 more
doaj   +1 more source

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