) are evaluated by
superposition of strain shapes (
) which scaled by the modal
coordinates (
).
A strain shape is generated by the selected mode shapes.
The strain () are evaluated by
superposition of strain shapes () which scaled by the modal
coordinates ().
The strain of a node is calculated as follows.
The reference frame of the above strain tensor is RFlex body reference frame. Therefore, the strain with respect to Global.Inertia reference frame is computed as below tensor transformation.
Where,
is an orientation matrix of
RFlex body reference frame.
.
The principal strain (
) can be computed from these strain
components.
The strain intensity (
) is the largest of the absolute
maximum values as 
.
The von mises strain (
) is computed as
