Results 11 to 20 of about 227,622 (300)

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

Evaluation of extremely steep residual stress gradients based on a combined approach using laboratory-scale equipment [PDF]

open access: yesJournal of Applied Crystallography, 2021
Surface treatments characterized by rapid heating and cooling (e.g. laser hardening) can induce very steep residual stress gradients in the direct vicinity of the area being treated. These gradients cannot be characterized with sufficient accuracy by means of the classical sin2Ψ approach applying angle-dispersive X-ray diffraction.
Andreas Fischer   +3 more
openaire   +2 more sources

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

Stress Gradient Effects on Notched Composite Failure Using a Local-Global Approach [PDF]

open access: yes45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference, 2004
Micromechanics based analysis to predict damage initiation in compressively loaded symmetric notched multidirectional laminates under remote uniaxial loading is described. A novel hybrid local-global finite element method in conjunction with the commercial code ABAQUS is used to solve the governing system of equations.
Ahn, Junghyun, Waas, Anthony M.
openaire   +1 more source

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