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An experimental and modeling investigation on the effects of temperature and strain rate on the tensile-deformation behavior of TB991 weld sealant

An experimental and modeling investigation on the effects of temperature and strain rate on the... Stress-relaxation and creep experiments of TB991 weld sealant were conducted at different temperatures. The effects of temperature and strain rate on the uniaxial tensile-deformation behavior were investigated. The experimental results demonstrated that the deformation behavior of the weld sealant was nonlinear. The stress-relaxation curves were close to each other, and the creep phenomenon of the materials was pronounced with increasing temperature. Further, the deformation behavior of the material exhibited a rate dependence below the glass-transition temperatures (Tg\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$T_{\mathrm{g}}$\end{document}), while the rate dependence was not significant as the temperature exceeded Tg\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$T_{\mathrm{g}}$\end{document}. A nonlinear viscoelastic damage constitutive model was used to describe the tensile-deformation behavior of TB991 weld sealant, and the damage-softening function in the constitutive model was modified. The comparison between the model prediction and the experimental results demonstrated that the modified constitutive model can well describe the tensile-deformation behavior of TB991 weld sealant under different temperatures and strain rates. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mechanics of Time-Dependent Materials Springer Journals

An experimental and modeling investigation on the effects of temperature and strain rate on the tensile-deformation behavior of TB991 weld sealant

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Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature B.V. 2022
ISSN
1385-2000
eISSN
1573-2738
DOI
10.1007/s11043-021-09536-7
Publisher site
See Article on Publisher Site

Abstract

Stress-relaxation and creep experiments of TB991 weld sealant were conducted at different temperatures. The effects of temperature and strain rate on the uniaxial tensile-deformation behavior were investigated. The experimental results demonstrated that the deformation behavior of the weld sealant was nonlinear. The stress-relaxation curves were close to each other, and the creep phenomenon of the materials was pronounced with increasing temperature. Further, the deformation behavior of the material exhibited a rate dependence below the glass-transition temperatures (Tg\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$T_{\mathrm{g}}$\end{document}), while the rate dependence was not significant as the temperature exceeded Tg\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$T_{\mathrm{g}}$\end{document}. A nonlinear viscoelastic damage constitutive model was used to describe the tensile-deformation behavior of TB991 weld sealant, and the damage-softening function in the constitutive model was modified. The comparison between the model prediction and the experimental results demonstrated that the modified constitutive model can well describe the tensile-deformation behavior of TB991 weld sealant under different temperatures and strain rates.

Journal

Mechanics of Time-Dependent MaterialsSpringer Journals

Published: Jan 17, 2022

Keywords: TB991 weld sealant; Temperature dependence; Rate dependence; Viscoelasticity; Constitutive model

References