3.5.1: Analyze
With geometry, supports and loads defined, the structural model is ready for processing. The “Analyze”-component computes the mechanical response for each load case and adds this information to the model.
The algorithm behind the “Analyze”-component neglects the change of length in axial or in-plane direction which accompanies lateral deformations. This is justified in case of displacements which are small with respect to the dimensions of a beam of shell. For dealing with situations where this condition does not hold, geometric non-linear calculations need to be used (see sections 3.5.3 and 3.5.4).
In case of the presence of second order normal forces (
$N^{II}$
, see below) their influence on structural stiffness is taken into account. Those
$N^{II}$
-forces do not get updated by the “Analyze”-component. Use the “AnalyzeThII” for that.
Fig. 3.5.1: Deflection of simply supported beam under single load in mid-span and axial, compressive load