Results 211 to 220 of about 23,863,179 (302)
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New fractional variable-order creep model with short memory
Applied Mathematics and Computation, 2020This paper uses the fractional-order derivative to describe the creep process of rock. A creep model is established by use of the short memory effect on each creep stage, and the efficiency of the model is verified.
Fei Wu, Renbo Gao, Jie Liu, Cunbao Li
semanticscholar +1 more source
Viscoelastic-plastic damage creep model for salt rock based on fractional derivative theory
, 2020Salt rock is widely used as an excellent material for energy storage owing to its low permeability, high safety, and stable mechanical properties. In this study, salt rock was subjected to a gradual loading creep test through the conventional uniaxial ...
Fei Wu +5 more
semanticscholar +1 more source
Probabilistic Creep Modeling of 304 Stainless Steel Using a Modified Wilshire Creep-Damage Model
Volume 6: Materials and Fabrication, 2020Abstract Pressure vessel components subject to high temperature and pressure are susceptible to life-limiting creep and/or creep-induced failure. Traditional continuum damage mechanics (CDM) based creep-damage model are used extensively for the prediction and design against creep in these components.
Calvin Stewart +2 more
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A grain-based time-to-failure creep model for brittle rocks
Computers and geotechnics, 2020Long-term stability analysis and stand-up time prediction of underground excavations are important in engineering design and construction. A Time-to-Failure (TtoF) creep model is proposed for the simulation of lifetime of intact brittle rock under ...
Mingzheng Wang, M. Cai
semanticscholar +1 more source
Failure-mechanism models for creep and creep rupture
IEEE Transactions on Reliability, 1993This tutorial illustrates design situations where creep and creep rupture of components can compromise system performance over time, thereby acting as a wearout failure mechanism. Polycrystalline materials, such as metals and ceramics, and polymers are treated.
J. Li, A. Dasgupta
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, 2020
A 3D micro-creep model based on the grain-based structure and the framework of the Particle Flow Code (PFC) approach is proposed. Simultaneously, a Voronoi polyhedral technique is employed to approximatively construct the grain structure of the real rock
Huan Li +5 more
semanticscholar +1 more source
A 3D micro-creep model based on the grain-based structure and the framework of the Particle Flow Code (PFC) approach is proposed. Simultaneously, a Voronoi polyhedral technique is employed to approximatively construct the grain structure of the real rock
Huan Li +5 more
semanticscholar +1 more source
2009
Abstract The overarching goal of life-prediction research is to develop models for the various types of time dependencies in the crack-tip damage accumulation that occur in materials subjected to elevated temperatures. This article focuses on describing the models based on creep, oxidation kinetics, evolution of crack-tip stress fields ...
Jeffrey L. Evans, Ashok Saxena
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Abstract The overarching goal of life-prediction research is to develop models for the various types of time dependencies in the crack-tip damage accumulation that occur in materials subjected to elevated temperatures. This article focuses on describing the models based on creep, oxidation kinetics, evolution of crack-tip stress fields ...
Jeffrey L. Evans, Ashok Saxena
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Modeling Creep Processes in Aging Polymers
International Applied Mechanics, 2016zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Olali, N. V. +3 more
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A novel damage-based creep model considering the complete creep process and multiple stress levels
, 2020To develop a unified creep model, the complete creep process of rock is divided into the deceleration region and acceleration region based on the typical deformation characteristics and mechanism of the rock creep behavior.
Wen-gui Cao, Ke Chen, Xin Tan, H. Chen
semanticscholar +1 more source
Factors influencing creep model equation selection
International Journal of Pressure Vessels and Piping, 2008During the course of the EU-funded Advanced-Creep Thematic Network, ECCC-WG1 reviewed the applicability and effectiveness of a range of model equations to represent the accumulation of creep strain in various engineering alloys. In addition to considering the experience of network members, the ability of several models to describe the deformation ...
Holdsworth, S. R. +11 more
openaire +4 more sources