Results 21 to 30 of about 14,048,300 (182)

Influence of constitutive model on calculation results of creep deformation response of notched specimen of GH4169 alloy

open access: yesJournal of Aeronautical Materials, 2021
In view of the creep deformation failure of areo-engine high temperature components, the elastoplastic and creep deformation response of GH4169 alloy smooth and notched plate specimens at 650 ℃ is calculated using elastoplastic coupled creep constitutive
HU Xianming   +3 more
doaj   +1 more source

The Interpretation of Experimental Observation Data for the Development of Mechanisms based Creep Damage Constitutive Equations for High Chromium Steel [PDF]

open access: yes, 2015
It is very important to design a safe factor or estimating the remain lifetime for electric power plant components of steam pipes which mostly manufacture by high chromium steels and work at high temperature and low stress level.
Yang, Xin   +5 more
core   +4 more sources

A Creep Constitutive Model, Based on Deformation Mechanisms and Its Application to Creep Crack Growth

open access: yesMetals, 2022
In this paper, a constitutive model, based on the creep deformation mechanism in P91 steel, under a wide range of stress levels, was established and embedded into finite element software.
Jingwei Zhang   +4 more
doaj   +1 more source

Stress relaxation and elastic follow-up using a stress range-dependent constitutive model [PDF]

open access: yes, 2012
Despite the availability of detailed nonlinear finite element analysis, some aspects of high temperature design can still be best addressed through more simplified methods.
Boyle, James
core   +4 more sources

High Temperature Mechanical Constitutive Modeling of a High-Nb TiAl Alloy

open access: yesJournal of Aeronautical Materials, 2018
Uniaxial tensile, low cycle fatigue, fatigue-creep interaction and creep experiments of a novel high-Nb TiAl alloy (i.e. Ti-45Al-8Nb-0.2W-0.2B-0.02Y (atom fraction/%)) were conducted at 750℃ to obtain its tested data and curves.
DONG Chengli   +4 more
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 perspective on the creep characteristic of fiber–dependent shape memory polymers: variable–order fractional constitutive model

open access: yesJournal of Materials Research and Technology, 2023
With the aim of describing and explaining the creep tensile property of shape memory polymers (SMPs) better, a variable--order fractional creep constitutive model with fewer parameters and good simulation performance was constructed on the basis of ...
Guo Shiru   +6 more
doaj   +1 more source

Triaxial creep damage characteristics of sandstone under high crustal stress and its constitutive model for engineering application

open access: yesDeep Underground Science and Engineering, 2023
The creep characteristics of rock under high crustal stress are of important influence on the long‐term stability of deep rock engineering. To study the creep characteristics and engineering application of sandstone under high crustal stress, this study ...
Dongxu Chen   +3 more
doaj   +1 more source

Development of Advanced Creep Damage Constitutive Equations for Low CR Alloy Under Long-Term Service [PDF]

open access: yes
Low Cr alloys are mostly utilized in structural components such as steam pipes, turbine generators and reactor pumps operating at high temperatures from 400℃ to 700℃ in nuclear power plants.
Xu, Qihua
core   +3 more sources

Shear creep characteristics and constitutive model of hidden non-persistent joints

open access: yesYantu gongcheng xuebao, 2019
The joints control the boundary of the rock slope instability. A large number of joints in the natural world are not completely persistent, and are hidden inside the slope.
LI Ren-jie , JI Feng , FENG Wen-kai , WANG Dong-po , ZHANG Jin-ming
doaj   +1 more source

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