Using Effective Material Properties
When a material undergoes phase transformations during a thermal transient, its material properties will change. The properties are typically temperature dependent and tend to be phase dependent, too. For example, the initial yield stress at a given temperature will be higher in martensite than in ferrite — two metallurgical phases that appear during hardening of steel. When the Metal Phase Transformation, Austenite Decomposition, or Alpha-Beta Phase Transformation interface is used with Heat Transfer in Solids or Solid Mechanics, it can compute effective material properties that can be utilized by these interfaces. The benefit is that the Heat Transfer in Solids and Solid Mechanics interfaces themselves do not need to perform phase averaging of the material properties that are used.
You can generate a compound material that can be used by other physics interfaces as a domain material. The compound material is created if you use the
Create Compound Material
option at the physics interface level. This material contains effective material properties that are computed from the corresponding material properties defined for each phase.
Compound Material Properties
Note that if
Enable phase plasticity
has been selected at the physics interface level, the
User defined
option should be used for the
Isotropic hardening model
in the
Plasticity
node in Solid Mechanics.
