1. Viscoelastic behavior of materials
A viscoelastic material subjected instantaneously to a constant stress σ0, far below the elastic limit, will exhibit an instantaneous elastic deformation ε él followed by an anelastic deformation ε anél increasing with the time the stress is applied and tending towards a limit value ε tot (figure 1). Complacency:
is therefore time-dependent and can be written as :
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Viscoelastic behavior of materials