Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
This chapter discusses a simplest model, called linear viscoelasticity, for viscoelastic materials. It provides simple mathematical models for understanding the phenomenology of the time‐dependent behavior of polymeric materials. Two types of model experiments are useful for understanding the behavior of time‐dependent materials. In the first, called a stress‐relaxation experiment, a constant deformation is imposed on an otherwise unstressed body and the resulting stress is monitored. In the second, called a creep experiment, a constant stress is imposed on the body and the evolution of deformation with time is monitored. The relaxation modulus and creep compliance are defined by responses to step changes in strain and stress. Responses to constant strain rates are important because of their application to experimental characterization of material properties. The chapter describes the possibility of relating the relaxation modulus and creep compliances at different, isothermal conditions.
This chapter discusses a simplest model, called linear viscoelasticity, for viscoelastic materials. It provides simple mathematical models for understanding the phenomenology of the time‐dependent behavior of polymeric materials. Two types of model experiments are useful for understanding the behavior of time‐dependent materials. In the first, called a stress‐relaxation experiment, a constant deformation is imposed on an otherwise unstressed body and the resulting stress is monitored. In the second, called a creep experiment, a constant stress is imposed on the body and the evolution of deformation with time is monitored. The relaxation modulus and creep compliance are defined by responses to step changes in strain and stress. Responses to constant strain rates are important because of their application to experimental characterization of material properties. The chapter describes the possibility of relating the relaxation modulus and creep compliances at different, isothermal conditions.
Linear Viscoelasticity
Stokes, Vijay K. (Autor:in)
Introduction to Plastics Engineering ; 175-197
11.05.2020
23 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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