IfcRelaxation

Definition from IAI: Measure of the decrease in stress over long time interval resulting from plastic flow. It describes the time dependent relative relaxation value for a given initial stress level at constant strain.

> HISTORY: New entity in Release IFC2x Edition 2.

EXPRESS specification:

ENTITY IfcRelaxation;
RelaxationValue | : | IfcNormalisedRatioMeasure;
InitialStress | : | IfcNormalisedRatioMeasure;
END_ENTITY;

Attribute definitions:

RelaxationValue | : | Time dependent loss of stress, relative to initial stress and therefore dimensionless.
InitialStress | : | Stress at the beginning. Given as relative to the yield stress of the material and is therefore dimensionless.

Inheritance graph

ENTITY IfcRelaxation;
ENTITY IfcRelaxation;
RelaxationValue | : | IfcNormalisedRatioMeasure;
InitialStress | : | IfcNormalisedRatioMeasure;
END_ENTITY;