viscoplastic

Definitions

adjective Describing a material that behaves as a solid below a critical value of stress, but flows like a viscous liquid at greater values of stress.

visco- +‎ plastic

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Would you call those viscoelastic or viscoplastic?

Guliya Core #2 and Mountain Glacier Flow « Climate Audit 2006
The J-integral approach is essentially based on a "deformation Plasticity" model, which is essentially a nonlinear elastic model - so no history is kept track of, which may be a problem for materials and loading conditions that need this (e.g. fatigue in viscoplastic materials like solder).

iMechanica - Comments SIVAKUMAR M V N 2010
The J-integral approach is essentially based on a "deformation Plasticity" model, which is essentially a nonlinear elastic model - so no history is kept track of, which may be a problem for materials and loading conditions that need this (e.g. fatigue in viscoplastic materials like solder).

iMechanica - Comments vcvikas 2009
I am facing the same problem when using the viscoplastic formulation.

iMechanica - Comments Nachiket Gokhale 2009
You’ll find both “viscoplastic” and “visco-elastic” listed.

Guliya Core #2 and Mountain Glacier Flow « Climate Audit 2006