Results 21 to 30 of about 6,757,056 (300)

Dynamic triaxial constitutive model for rock subjected to initial stress

Open Physics, 2020
Building on the existing model, an improved constitutive model for rock is proposed and extended in three dimensions. The model can avoid the defect of non-zero dynamic stress at the beginning of impact loading, and the number of parameters is in a ...
Li Junzhe, Zhang Guang, Liu Mingze, Hu Shaohua, Zhou Xinlong   +4 more
doaj   +1 more source

Effect of the Minor Principal Stress on Crack Initiation Stress Threshold

IOP Conference Series: Earth and Environmental Science, 2021
The rapid expansion of urban and mining infrastructures worldwide over the last two decades has seen an escalation of development in hard rock, including urban tunnels, deep open pits, and underground mines. However, despite many success stories, the pervasiveness of rock burst and spalling remains yet a major unresolved ground control problem in many ...
Mutaz, Mahmoud, Serati, Mehdi, Williams, David J.   +2 more
openaire   +2 more sources

Thermoelastic Model with Higher-order Time-derivatives and Two Phase-lags for an Infinitely Long Cylinder under Initial Stress and Heat Source [PDF]

Journal of Applied and Computational Mechanics, 2021
In this work, a generalized higher-order time-derivatives model with phase-lags has been introduced. This model is applied to study the thermal heat problem of a homogeneous and isotropic long cylinder due to initial stress and heat source.
Anouar Saidi, Ahmed E. Abouelregal
doaj   +1 more source

Surface stress and reversing size effect in the initial yielding of ultrathin films [PDF]

, 2005
Very recent experiments indicate that in free-standing metallic films of constant grain size the initial yield stress increases as the film becomes thinner, it peaks for a thickness on the order of 100 nm, and then starts to decrease. This reversing size
Dai, Xiangyu, Gioia, Gustavo
core   +1 more source

Limestone Acoustic Emission Evolution Characteristics Under Different Experimental Loading and Unloading Conditions

Frontiers in Physics, 2020
To study the acoustic emission evolution characteristics of saturated limestone under different loading and unloading paths, three cyclic loading and unloading tests were conducted with different loading rates and initial cyclic peak stresses, and ...
Jielin Li, Jielin Li, Liu Hong, Keping Zhou, Caichu Xia, Caichu Xia, Longyin Zhu   +6 more
doaj   +1 more source

Initial stress symmetry and its applications in elasticity [PDF]

Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015
An initial stress within a solid can arise to support external loads or from processes such as thermal expansion in inert matter or growth and remodelling in living materials. For this reason, it is useful to develop a mechanical framework of initially stressed solids irrespective of how this stress formed.
Gower, A. L, CIARLETTA, PASQUALE, Destrade, M.   +2 more
openaire   +6 more sources

Identification of muscle activity in tongue motion during swallowing through medical image data

Journal of Biomechanical Science and Engineering, 2021
This paper presents a formulation to identify muscle activities from the variation in shapes of organs during swallowing. We assume that each organ consists of a three-dimensional hyperelastic body, and the contraction movement of the muscle is caused by
Hideyuki AZEGAMI, Shinjiro ONO, Kenzen TAKEUCHI, Takahiro KIKUCHI, Yukihiro MICHIWAKI, Keigo HANYU, Tetsu KAMIYA   +6 more
doaj   +1 more source

Effect of Initial Stress on the Dynamic Response of a Multi-Layered Plate-Strip Subjected to an Arbitrary Inclined Time-Harmonic Force

International Journal of Applied Mechanics and Engineering, 2017
The forced vibration of a multi-layered plate-strip with initial stress under the action of an arbitrary inclined time-harmonic force resting on a rigid foundation is considered.
A. Daşdemir
doaj   +1 more source

Initial stress in biomechanical models of atherosclerotic plaques

, 2011
Rupture of atherosclerotic plaques is the underlying cause for the majority of acute strokes and myocardial infarctions. Rupture of the plaque occurs when the stress in the plaque exceeds the strength of the material locally.
Jukema, J.W., Virmani, R., Weerd, van der, L., J.W. Jukema, B. den Adel, F.J.H. Gijsen, Adel, B. den, R.E. Poelmann, Wentzel, J.J., Akyildiz, A.C., A.F.W. van der Steen, L. van der Weerd, Weerd, L. van der, Virmani, R, Gijsen, F.J.H., Steen, A.F.W. van der, Brummelen, van, E.H., Poelmann, R.E., Steen, van der, A.F.W., A.C. Akyildiz, Speelman, L., J.J. Wentzel, L. Speelman, Poelmann, RE, E.H. van Brummelen, Brummelen, E.H. van, Adel, den, B., R. Virmani, van der Weerd, L, Akyildiz, Ali, Speelman, Lambert, van der Steen, Ton, van Brummelen, EH, den Adel, B, Gijsen, Frank, Jukema, JW, Wentzel, Jolanda   +36 more
core   +2 more sources

Mathematical Model on Gravitational Electro-Magneto-Thermoelasticity with Two Temperature and Initial Stress in the Context of Three Theories

Mathematics, 2020
The main aim of this paper is to study two temperature thermoelasticity in a generalization form to solve the half-space problem of two dimensions under gravity, perturbed magnetic field, and initial stress.
Sayed M. Abo-Dahab, Alaa A. El-Bary, Yas Al-Hadeethi, Mohamed Alkashif   +3 more
doaj   +1 more source