Learning Forum

[mertserveren8105]

Hello, is there any way in LS_Dyna to define a viscoelastic material which has constant storage and loss modulus? E*=E0(1+n i)

[Neetu Jha]

In LS-DYNA, defining a viscoelastic material with constant storage and loss modulus can be approached by using specific material models. The *MAT_GENERAL_VISCOELASTIC (*MAT_76) model is one option that allows for the definition of viscoelastic properties. This model requires the definition of density and bulk modulus, and it can incorporate viscoelastic constants using Prony series for shear and volumetric relaxation properties. This setup can be used to model materials with specific viscoelastic characteristics, although it typically involves frequency-dependent properties rather than constant values