Material Models
There are many material models available for structural analysis in COMSOL Multiphysics. In this section, theory for all material models is presented. The material models available, and also some detailed aspects of them, depend on which licenses you have. The material models, grouped by families, are as follows:
•
Linear Elastic Material
•
Nonlinear Elastic Materials
-
Ramberg–Osgood
-
Power Law
-
Bilinear Elastic
-
Uniaxial Data
-
Hyperbolic Law
-
Hardin–Drnevich
-
Duncan–Chang
-
Duncan–Selig
-
User Defined
•
Linear Viscoelastic Materials
-
The Maxwell model
-
The Generalized Maxwell Model
-
Standard Linear Solid Model
-
The Kelvin–Voigt Model
-
The Generalized Kelvin–Voigt Model
-
The Burgers Model
-
Generalized Maxwell Model with Fractional Derivatives
-
Generalized Kelvin–Voigt model with fractional derivatives
-
Standard Linear Solid Model with Fractional Derivatives
•
Hyperelastic Material Models
-
Neo-Hookean
-
St Venant–Kirchhoff
-
Mooney–Rivlin, Two Parameters
-
Mooney–Rivlin, Five Parameters
-
Mooney–Rivlin, Nine Parameters
-
Yeoh
-
Ogden
-
Storakers
-
Varga
-
Arruda–Boyce
-
Gent
-
Blatz–Ko
-
Gao
-
Murnaghan
-
Delfino
-
Fung
-
User Defined
-
Mullins Effect
•
Elastoplastic Material Models
-
The von Mises Criterion
-
The Tresca Criterion
-
Hill Orthotropic Plasticity
•
Porous Plasticity
-
The Shima–Oyane Criterion
-
The Gurson Criterion
-
The Gurson–Tvergaard–Needleman Criterion
-
The Fleck–Kuhn–McMeeking Criterion
-
The FKM–GTN Criterion
-
Capped Drucker–Prager
•
Soil Plasticity
-
The Mohr–Coulomb Criterion
-
The Drucker–Prager Criterion
-
The Matsuoka–Nakai Criterion
-
The Lade–Duncan Criterion
•
Failure Criteria for Concrete, Rocks, and Other Brittle Materials
-
The Bresler–Pister Criterion
-
The Willam–Warnke Criterion
-
The Ottosen Criterion
-
The Original Hoek–Brown Criterion
-
The Generalized Hoek–Brown Criterion
•
Elastoplastic Soil Models
-
The Modified Cam-Clay Soil Model
-
The Modified Structured Cam-Clay Soil Model
-
The Extended Barcelona Basic Soil Model
-
The Hardening Soil Model
•
Creep and Viscoplasticity
-
Norton Law (Power law)
-
The Norton–Bailey Law
-
Garofalo Law (Hyperbolic Sine Law)
-
Nabarro–Herring Creep (Diffusional Creep)
-
Coble Creep (Diffusional Creep)
-
Weertman Creep (Dislocation Creep)
-
Anand Viscoplastic Model
-
Chaboche Viscoplastic Model
-
Perzyna Viscoplastic Model
-
Creep Potential
-
Volumetric Creep
-
Deviatoric Creep
-
User Defined Creep
•
Piezoelectric Material
•
Magnetostrictive Material
•
Electrostriction
•
Ferroelectroelasticity
•
Rigid Domain Model
•
Damage Models
•
Safety Factor Evaluation
You can also add a material model which you have coded yourself and made available as a binary library file using an External Stress-Strain Relation.
In the COMSOL Multiphysics Reference Manual:
•
Working with External Materials
•
External Material