Glueing in Cyclic Symmetry
ADINA 8.5 has several enhancements to cyclic symmetry. One of these is the ability to use the powerful Mesh Glueing feature in cyclically symmetric static, dynamic and frequency analyses.
The example shown here is a simplified fan model where 32 blades are attached to the cylindrical base via mesh glueing. The key features of the analysis performed are:
The fan is subjected to centrifugal forces, and a pressure load on one face of the blades. A nonlinear static analysis is performed, followed by a full cyclic frequency analysis. That way the effect of fan deformation on the natural frequencies and mode shapes of the fan is accounted for.
The movie above shows one of the mode shapes of the fan. Fig. 3 below shows the
The ADINA cyclic symmetry analysis capabilities — with the mesh glueing also available — are clearly very useful in modeling many engineering problems.