Results 41 to 50 of about 844,837 (296)

Research on Energy Dissipation Laws of Coal Crushing under the Impact Loads

open access: yesShock and Vibration, 2021
Dynamic crushing characteristics of coals are closely related with energy absorption and release of coals under certain strain rate. Hence, it is necessary to investigate energy dissipation laws of coal crushing under the impact loads with different ...
Dengke Xu   +3 more
doaj   +1 more source

Analysis of Energy Transmission and Deformation Characteristics of Coal-Rock Combined Bodies

open access: yesGeofluids, 2022
A coal-rock system is a common combination form in coal mines. In order to explore the energy interchange law of a coal-rock combined body and the interaction relationship between the two bodies, loading tests of coal-rock combined bodies with different ...
Wang Tuo, Qi Fuzhou, Chang Jucai
doaj   +1 more source

Strain-induced energy band gap opening in two-dimensional bilayered silicon film

open access: yes, 2015
This work presents a theoretical study of the structural and electronic properties of bilayered silicon films under in-plane biaxial strain/stress using density functional theory.
Ji, Zhonghang   +3 more
core   +1 more source

Effect of Nonparallel End Face on Energy Dissipation Analyses of Rocklike Materials Based on SHPB Tests

open access: yesShock and Vibration, 2019
To evaluate the effect of nonparallel end face of rocklike specimens in SHPB tests, the characteristics of energy dissipation are analyzed based on numerical simulations for end-face nonparallelism from 0% to 0.40% and Young’s modulus from 14 GPa to 42 ...
Pu Yuan, Ning-Ning Wei, Qin-Yong Ma
doaj   +1 more source

Numerical modeling on strain energy evolution in rock system interaction with energy-absorbing prop and rock bolt

open access: yesInternational Journal of Mining Science and Technology, 2023
The interaction mechanism between coal and rock masses with supporting materials is significant in roadway control, especially in deep underground mining situations where dynamic hazards frequently happened due to high geo-stress and strong disturbed ...
Yang Hao   +6 more
doaj   +1 more source

On the strain-energy density in linear elasticity [PDF]

open access: yesJournal of Engineering Mathematics, 1973
SUMMARY Standard results from matrix theory are used to derive optimal upper and lower bounds for the strain-energy density in terms of the norm of the stress tensor in two and three dimensions. The approach also yields directly necessary and sufficient conditions for positive-definiteness.
openaire   +2 more sources

Ferroelectricity in [111]-oriented epitaxially strained SrTiO$_3$ from first principles

open access: yes, 2019
We use first principles density functional theory calculations to investigate the effect of biaxial strain in the low-temperature structural and ferroelectric properties of [111]-oriented SrTiO$_3$.
Neaton, Jeffrey B.   +2 more
core   +1 more source

Ductile crack propagation with the strain energy density criterion [PDF]

open access: yesEngineering Fracture Mechanics, 1985
The strain energy density criterion is used to characterize subcritical crack growth in a thin aluminum alloy sheet undergoing general yielding. A finite element analysis which incorporates both material and geometrical nonlinear behaviors of the cracked sheets is developed to predict fracture loads at varying crack growth increments.
C.L. Chow, Xu Jilin
openaire   +1 more source

Strain-controlled fundamental gap and structure of bulk black phosphorus

open access: yes, 2016
We study theoretically the structural and electronic response of layered bulk black phosphorus to in-layer strain. Ab initio density functional theory (DFT) calculations reveal that the strain energy and interlayer spacing display a strong anisotropy ...
Guan, Jie   +3 more
core   +1 more source

Registration of brain tumor images using hyper-elastic regularization [PDF]

open access: yes, 2012
In this paper, we present a method to estimate a deformation field between two instances of a brain volume having tumor. The novelties include the assessment of the disease progress by observing the healthy tissue deformation and usage of the Neo ...
Hamamci, Andac   +3 more
core   +1 more source

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