Results 21 to 30 of about 191,694 (304)

Design of an Anthracite Creep Model Based on Fractional Order Theory: Experiments and Simulations

open access: yesApplied Sciences, 2023
Fractional order theory was used to characterize the accelerated creep phase of a nonlinear creep model. To accurately describe each stage of the anthracite creep model, the “gyroscope” unit was introduced by combining the Heaviside function and the ...
Gang Li   +6 more
doaj   +1 more source

Research on Creep Model of Roadway Surrounding Rock Based on Variable Creep Parameters

open access: yesMeikuang Anquan, 2020
In order to study the creep behavior of surrounding rock of Huaying Coal Mine in Sichuan under different confining pressure characteristics, the triaxial creep test of sandstone was carried out by TAW-2000 test system.
LIU Changming, ZHANG Hong
doaj   +1 more source

Time-Dependent Creep Constitutive Model of Roadway Surrounding Rock Based on Creep Parameters

open access: yesGeofluids, 2022
In order to better study the creep deformation characteristics of rock under different stresses, the generalized Burgers model was used as the basic model after analyzing the creep characteristics of rock and its relationship with stress and strain, and ...
Yukun Ma   +4 more
doaj   +1 more source

New Creep Crack Growth Prediction Model for the Life Assessment of Stainless-Steel Material Using Computational Modeling

open access: yesMetals, 2023
The limitations of the established and existing creep failure models have inspired the development of a new creep prediction model. Models like Norton–Bailey and Omega are unable to model the tertiary creep curve for engineering materials.
Mohsin Sattar   +4 more
doaj   +1 more source

Thermal creep behavior of CZ cladding under biaxial stress state

open access: yesNuclear Engineering and Technology, 2020
Thermal creep is a key property of zircaloy cladding. CZ developed by CGN is a new zircaloy used as PWR fuel cladding. This research is devoted to investigating the thermal creep behavior of CZ and build the thermal creep model of CZ.
Jin Xin, Lin Yuyu, Zhang Libin
doaj   +1 more source

Triaxial creep test and model study of red sandstone based on Weibull distribution

open access: yesShuiwen 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
doaj   +1 more source

The behavior of structures based on the characteristic strain model of creep [PDF]

open access: yes, 2011
There has been much work over the past two decades to aid the design and assessment engineer in the selection of a suitable material model of creep for high temperature applications.
Boyle, James
core   +1 more source

Creep-fatigue life assessment of cruciform weldments using the linear matching method [PDF]

open access: yes, 2013
This paper presents a creep-fatigue life assessment of a cruciform weldment made of the steel AISI type 316N(L) and subjected to reversed bending and cyclic dwells at 550C using the Linear Matching Method (LMM) and considering different weld zones.
Chen, Haofeng, Gorash, Yevgen
core   +1 more source

New Maxwell Creep Model Based on Fractional and Elastic-Plastic Elements

open access: yesAdvances in Civil Engineering, 2020
Creep models are mainly used to describe the rheological behaviour of geotechnical materials. An important research focus for studying creep in geotechnical materials is the development of a model with few parameters and good simulation performance ...
Hao Tang, Dongpo Wang, Zhao Duan
doaj   +1 more source

Study on Nonlinear Damage Creep Model for Rocks under Cyclic Loading and Unloading

open access: yesAdvances in Materials Science and Engineering, 2021
To determine the nonlinear creep characteristics of rocks under cyclic loading and unloading conditions, a nonlinear Kelvin model and damage viscoplastic model are proposed.
Liangliang Zhang, Xiaojian Wang
doaj   +1 more source

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