Results 11 to 20 of about 36,960 (267)

Analysis of Thermal Stresses and Strains Developing during the Heat Treatment of Windmill Shaft

open access: yesArchives of Metallurgy and Materials, 2017
In the paper the results of evaluation of the temperature and stress fields during four cycles of the heat treatment process of the windmill shaft has been presented.
Cebo-Rudnicka A.   +2 more
doaj   +1 more source

Experimental and Numerical Study on the Protective Behavior of Weldox 900 E Steel Plates Impacted by Blunt-Nosed Projectiles

open access: yesMetals, 2022
To demonstrate the importance of incorporating Lode angle into fracture criterion in predicting the penetration resistance of high-strength steel plates, ballistic tests of blunt-nosed projectiles with a diameter of 5.95 mm impacted 4 mm thick Weldox 900
Yahui Shi   +4 more
doaj   +1 more source

A criterion for identifying a mixed-mode I/II hydraulic fracture crossing a natural fracture in the subsurface

open access: yesEnergy Exploration & Exploitation, 2020
Hydraulic fracturing has been proven to be an effective technique for stimulating petroleum reservoirs. During the hydraulic fracturing process, the effects of the natural fracture, perforation orientation, stress reorientation, etc.
Yijin Zeng, Wan Cheng, Xu Zhang, Bo Xiao
doaj   +1 more source

Modified Hoek-Brown criterion model for laminated rock based on fracture mechanics

open access: yes矿业科学学报, 2022
Based on the fracture mechanics theory of the isotropic Hoek-Brown strength criterion, this paper established the initiation conditions of the bifurcated microcrack along bedding which begins with the meso-fracture mechanism of laminated rocks.
Li Yingjie   +4 more
doaj   +1 more source

STUDY ON DUCTILE FRACTURE CRITERION PARAMETERS OF HIGH STRENGTH DUPLEX STEEL PLATE

open access: yesJixie qiangdu, 2023
In order to predict the ductile fracture failure of different high-strength steel plates, the damage parameters of the ductile fracture criterion were calibrated by designing the tensile, shear and fracture failure tests of four high-strength steel ...
MA ChunHui   +5 more
doaj  

Modeling of porous material fracture [PDF]

open access: yesИнженерно-строительный журнал, 2017
Wide use of various porous materials in construction engineering applications requires development of up to date methods of non-destructive characterization and optimization of such materials.
A.N. Levandovskiy   +2 more
doaj   +1 more source

Fracture failure mechanism and fracture criterion of compacted clay under compression and shear action

open access: yesYantu gongcheng xuebao, 2021
Soil cracks are often considered to be caused by tensile-shear stress. In actual engineering, the compacted clay is mostly under compressive-shear stress state.
HUANG Shi-yuan 1, 2, 4, WANG Jun-jie 2, WANG Ai-guo 3, JI En-yue 1, GUO Wan-li 1, JIN Song-yang 2
doaj   +1 more source

SWIIFT v0.10: a numerical model of wave-induced sea ice breakup with an energy criterion [PDF]

open access: yesGeoscientific Model Development
The wave-induced breakup of sea ice contributes to the formation of the marginal ice zone in the polar oceans. Understanding how waves fragment the ice cover into individual ice floes is thus instrumental for accurate numerical simulations of the sea ice
N. G. A. Mokus   +7 more
doaj   +1 more source

Analysis of Crack Formation and Growth in Tunnel Linings Using Double-K Fracture Criterion

open access: yesApplied Sciences, 2022
Empirical criteria and fracture/damage mechanics are used to evaluate the safety of lining cracks in the conventional methods. However, the former lacks a scientific basis, and the latter requires complicated mechanical calculations.
Chengjun Huang, Xinrui Li, Ming Wen
doaj   +1 more source

A Fracture Criterion for Snow [PDF]

open access: yesJournal of Glaciology, 1977
AbstractA fracture criterion is developed for fine-grained granular snow and is shown to predict accurately the conditions required for fracture under multiaxial states of stress. The criterion is applied to two specific types of deformation histories.
openaire   +1 more source

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