Creep failure characteristics and damage creep model of red layer soft rock based on Perzyna viscoplastic theory [PDF]
Scientific ReportsRock creep is essentially a process of damage accumulation. According to the damage evolution of rock under creep conditions, the TAW2000 triaxial test system is used to carry out triaxial creep test on red layer soft rock taken from Yibo Tunnel in ...
Lei Chen +6 more
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Viscoelastic plastic creep constitutive model based on energy conservation law and strain energy theory [PDF]
Scientific ReportsOn the basis of the law of conservation of energy, the three stages of rock creep are analyzed. The reasons for the difficulty in studying the accelerated creep stage of rocks using the traditional creep model are expounded.
Di Zhou +9 more
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Triaxial creep test and model study of red sandstone based on Weibull distribution
Shuiwen dizhi gongcheng dizhi, 2023 At present, the creep problem of underground engineering surrounding rock still exists, and the creep theory needs to be further enriched. In essence, rock creep is a process of constant accumulation of damage.
Weize ZHANG +3 more
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A nonlinear creep model for surrounding rocks of tunnels based on kinetic energy theorem
Journal of Rock Mechanics and Geotechnical Engineering, 2023 The initiating condition for the accelerated creep of rocks has caused difficulty in analyzing the whole creep process. Moreover, the existing Nishihara model has evident shortcomings in describing the accelerated creep characteristics of the ...
Wenbo Liu +4 more
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Piotr Perzyna – Scientific Conductor within Theory of Thermo-Viscoplasticity
Engineering Transactions, 2014 In this paper, authors reminisce on years of scientific cooperation and achievements on the personality of Piotr Perzyna and his Theory of Thermo-Viscoplasticity, which are displayed from remembrance. All the essence of latin words Master, Doctor, Docent, Professor are in some kind the reflection of the scientific history that has happened during the ...
Adam GLEMA +2 more
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Finite Element Simulations of an Elasto-Viscoplastic Model for Clay
Geosciences, 2019 In this paper, we develop an elasto-viscoplastic (EVP) model for clay using the non-associated flow rule. This is accomplished by using a modified form of the Perzyna’s overstressed EVP theory, the critical state soil mechanics, and the multi ...
Mohammad N. Islam +2 more
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Applied SciencesThe contribution presents the verification of the methodology of accelerated creep tests from the point of view of obtaining more information about the stress–strain behaviour of the investigated materials using the Digital Image Correlation method ...
Zbynek Paska +4 more
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A Comparative Study of Vibrations of Elasto-Viscoplastic Shells and Plates
Engineering Transactions, 1995 A method of solution of the problem of nonlinear vibrations of elasto-viscoplastic plates and shells is presented, based on the first order shear deformation-moderate rotation theory of the laminated shells. Viscoplastic material behaviour is taken into
P. Kłosowski, K. Woźnica, D. Weichert
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Mixed Finite Element Solution of Quasi-Static Problems of Viscoplastic Plates
Engineering Transactions, 1980 The paper is concerned with the numerical analysis of rigid, viscoplastic and elastic viscoplastic plates subjected to static loading. The small deflection theory of thin plates is employed.
M.J. Mikkola, K. Saloviin
doaj
Simulation of the inelastic deformation of porous reservoirs under cyclic loading relevant for underground hydrogen storage. [PDF]
Sci Rep, 2022 Kumar KR, Honorio HT, Hajibeygi H.
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