Creep Mechanics

doi:10.1007/978-3-540-85051-9

Cited by 6 publications

(2 citation statements)

References 127 publications

(223 reference statements)

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“…Concerning the impact of temperature on the behavior of thermoplastics, it is considered the principle of timetemperature superposition 13 through which several thermal laws have been established in the literature such as: the Andrade's law, 23 the Arrhenius' law 24 and that of WLF. 15 In this study, the last two models are considered for the thermal characterization of behavioral laws for all models.…”

Section: Burger's and Modified Burger's Model (Jeffrey Model)mentioning

confidence: 99%

Viscoelastic characterization of high‐density polyethylene membranes under the combined effect of the temperature and the gravity for thermoforming applications

Aoun

Erchiqui

Mrad

et al. 2020

Polymer Engineering & Sci

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Numerical simulation of the heating stage of thermoplastics in thermoforming requires a good knowledge of the behavior of the materials used. To this end, a study is being conducted on the characterization of the viscoelastic behavior of a circular membrane, made of high-density polyethylene (HDPE), under the combined effect of temperature and the force of gravity. The experimental tests were carried out in a convection oven for five temperatures (100, 110, 120, 130 and 140 C). For the numerical characterization of the viscoelastic behavior, two viscoelastic models were considered: the classic Kelvin-Voigt model and the new three-parameter modified Burger's model (Jeffrey model) that we propose. The mechanical parameters of both models were identified using the Levenberg-Marquardt algorithm. The thermal-dependency of the viscosity was characterized by two thermal models: the Arrhenius law and the William-Landel-Ferry (WLF) equation.

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Section: Burger's and Modified Burger's Model (Jeffrey Model)mentioning

confidence: 99%

Viscoelastic characterization of high‐density polyethylene membranes under the combined effect of the temperature and the gravity for thermoforming applications

Aoun

Erchiqui

Mrad

et al. 2020

Polymer Engineering & Sci

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show abstract

“…Betten [39] explained that Norton and Bailey [40,41] developed a constitutive model to predict time-dependent inelastic deformations that occur in primary and secondary creep stages. The power-law relation that defines the uniaxial equivalent creep strain rate, 𝜀 𝑐𝑟 ̇, is given in Equation 1 below, where 𝐵, 𝑛 and 𝑚 are constants specific to the material and process conditions, 𝜎 is the equivalent stress and 𝑡 is the total time.…”

Section: The Eigenstrain-creep Modelmentioning

confidence: 99%

On the analysis of post weld heat treatment residual stress relaxation in Inconel alloy 740H by combining the principles of artificial intelligence with the eigenstrain theory

Uzun

Korsunsky

2019

Materials Science and Engineering: A

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Comprehensive Review of Subloading Surface Model: Governing Law of Irreversible Mechanical Phenomena of Solids

Hashiguchi,

Yamakawa,

Anjiki

et al. 2024

Arch Computat Methods Eng

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The constitutive equations for the irreversible mechanical phenomena, e.g. the plastic deformation and the sliding between solids with the friction have been studied over the several centuries. Especially, they have been studied for the description of the cyclic loading behaviors in the last half century in order to respond to the high developments of the mechanical, the civil and the structural industries. Then, various constitutive models for these phenomena during the cyclic loading have been proposed hitherto. In this article, the mechanical features and the advantages/disadvantages of the constitutive models which are adopted widely for mechanical design and installed into a lot of commercial software will be clarified by the critical review for the further developments of the research on the plastic deformation/sliding phenomena and the engineering design of solids and structures, since plural different models are not necessary to these ends for the analyses of identical deformation/sliding behaviors. Eventually, it will be described that the irrational formulations involved in the past formulations can be solved out thoroughly by the recent formulations of the subloading-overstress model and subloading-overstress friction model for the monotonic and cyclic loadings under the general rate of deformation/sliding from the quasi-static to the impact loadings in unified equations, disusing the rate-independent plastic/sliding constitutive models.

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Creep Mechanics

Cited by 6 publications

References 127 publications

Viscoelastic characterization of high‐density polyethylene membranes under the combined effect of the temperature and the gravity for thermoforming applications

Viscoelastic characterization of high‐density polyethylene membranes under the combined effect of the temperature and the gravity for thermoforming applications

On the analysis of post weld heat treatment residual stress relaxation in Inconel alloy 740H by combining the principles of artificial intelligence with the eigenstrain theory

Comprehensive Review of Subloading Surface Model: Governing Law of Irreversible Mechanical Phenomena of Solids

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