Anelastic Methods

The anelastic methods displayed by VBR_list_methods currently include:

• eburgers_psp documentation: Extended Burgers Model, pseudo period scaling
• andrade_psp documentation: Andrade Model, pseudo period scaling
• xfit_mxw documentation: Master Curve Fit, maxwell scaling
• xfit_premelt documentation: Master Curve Fit, pre-melting maxwell scaling
• andrade_analytical documentation: A theoretical Andrade Model, no scaling.
• maxwell_analytical documentation: A theoretical Maxwell Model, no scaling.
• backstress_linear documentation: Dislocation-based dissipation using the linearized backstress of Hein et al., 2025.

A detailed theoretical description of each is provided in the full methods paper (link) or in the papers cited by the methods and so here, we only describe the computational aspects useful to the end user.

All of the anelastic methods require results of an elastic calculation, specifically the unrelaxed elastic moduli. If calculated, the anelastic methods may also use moduli from VBR.out.elastic.anh_poro and default to those from VBR.out.elastic.anharmonic.