II.4.9 Calculation of criteria from FE stresses or strains

The “calcFiniteElementCriteria” method allows the calculation of ply failure criteria, reserve factors or equivalent stress or strain from layered Results. The method has four arguments:

• “ClaDB” a ClaDb object from which ply allowables and needed for the calculations are retrieved.
• “InRes” a tensorial Result object corresponding to “Stress Tensor”, “Strain Tensor” or “Mechanical Strain Tensor” the components of which are used to estimate the criteria. It is the responsibility of the user to provide the tensor corresponding to the requested criteria.
• “FoS” a Real object corresponding to the factor of safety.
• “FiRfResReq” the requested criteria outputs. (See the description of method “calcFiniteElementResponse” for a detailed description of the argument.)

The method returns a Hash object containing pairs of Strings and Results. In this case, only scalar Result objects are returned.

The different calculated results from the ClaLam object are expressed in the units system associated with the object.