Results 1 to 10 of about 654,561 (303)
Constant stress arches and their design space. [PDF]
Proc Math Phys Eng Sci, 2022 It is generally accepted that an optimal arch has a funicular (moment-less) form and least weight. However, the feature of least weight restricts the design options and raises the question of durability of such structures. This study, building on the analytical form-finding approach presented in Lewis (2016. Proc. R. Soc. A
Lewis WJ.
europepmc +6 more sources
Granular behaviour under bi-directional shear with constant vertical stress and constant volume
Journal of Rock Mechanics and Geotechnical EngineeringThis paper aims to investigate the role of bi-directional shear in the mechanical behaviour of granular materials and macro-micro relations by conducting experiments and discrete element method (DEM) modelling.
Min Zhang +3 more
doaj +4 more sources
Applied Sciences, 2021 Although Wiener process models with the consideration of uncertainties, which are nonlinearity, random effects, and measurement errors, have been developed for lifetime prediction in the accelerated degradation test (ADT), they fail to describe the real ...
Xiaoning Wang, Xiaobao Su, Jinjing Wang
doaj +2 more sources
Brittle Creep and Viscoelastic Creep in Lower Palaeozoic Shales from the Baltic Basin, Poland
Energies, 2021 The paper analyses the mechanical properties of shales from the Baltic Basin, focusing on creep strain in conditions of variable stress and elevated temperature (85 °C). Rock samples were collected from drill cores from various depths between 3600–4000 m.
Przemyslaw Michal Wilczynski +2 more
doaj +1 more source
Buildings, 2023 It is of great significance to deeply understand the stress damage mechanism of the pile–soil interface under cyclic loading for the safety control of engineering entities. Large-scale self-developed shear equipment was used to conduct cyclic shear tests
Yongming Ma +6 more
doaj +1 more source
Effect of stress path on shearing resistance of sandstone fractures [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2020 Triaxial and direct shear tests have been performed on rough (tension-induced) and smooth (saw-cut) fractures in Phra Wihan sandstone specimens. Two stress paths are used for the triaxial shear testing: constant confining stress and constant mean ...
Pakpoom Naphudsa +2 more
doaj +1 more source
Energy Evolution Characteristics of Rock Under Different Confining Conditions
Frontiers in Earth Science, 2022 Constant stiffness confining condition seems more reasonable than constant stress confining condition to simulate the actual confining stress environment of in situ rock which varies with the lateral strain.
Bi-Wen Zhang +6 more
doaj +1 more source
Energy Science & Engineering, 2020 Owing to the characteristics of coal reservoirs, the gas flow capacity and permeability exhibit strong anisotropy. The anisotropy in terms of the magnitude, which corresponds to the permeability in the horizontal direction being several orders of ...
Zhigang Zhang +5 more
doaj +1 more source
Estimation and prediction constant stress accelerated life testing for gull alpha power Fréchet distribution [PDF]
مجلة العلوم التجارية والبيئيةTraditional life Analysis of data involves examining time-to-failure outcomes (for a system, component, or product) collected according to usual conditions to evaluate life specifications and provide predictions regarding product performance.
Sahar H. A. Osman +3 more
doaj +1 more source
Stress evolution and thickness change of a lithium-ion pouch cell under various cycling conditions
Journal of Power Sources Advances, 2022 To design large-sized lithium-ion battery modules for the application of electric vehicles and grid-level energy storage, it is of important significance to understand how stress and dimension of a single pouch cell fluctuate during charge/discharge ...
Congrui Jin +3 more
doaj +1 more source