Overview
Polymeric materials exhibit stress relaxation, creep, and general time-dependent mechanical response that is characterized as viscoelastic. A change in the temperature of a solid polymer produces two effects: (1) thermal expansion or contraction and (2) a change in its creep and stress-relaxation properties. Spatially varying thermal expansion or contraction produces thermal stresses in polymeric structures just as in metal structures. The dependence of creep and stress relaxation on temperature is a property of polymers that has important implications for structural applications. It provides the means for calculating “frozen-in” stress distributions as well as determining the time dependence of deformed states.
This entry presents the most commonly used constitutive equation for linear viscoelastic materials with temperature-dependent properties. Only one-dimensional response is discussed in order to introduce the important concepts. The entry closes with a description of...
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Wineman, A. (2014). Constitutive Equation for Linear Viscoelastic Materials with Temperature-Dependent Properties. In: Hetnarski, R.B. (eds) Encyclopedia of Thermal Stresses. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-2739-7_886
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DOI: https://doi.org/10.1007/978-94-007-2739-7_886
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-007-2738-0
Online ISBN: 978-94-007-2739-7
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