POL-X West, Inc.

Engineering Services for the Transportation & Amusement Ride Industries

 

Detroit APM Drive Bullwheel Finite Element Analysis

 

The drive bullwheel of the Poma-Otis Detroit Automated People Mover was analyzed using ALGOR to verify the stresses at the hub ID.  This bullwheel is designed to attach to the drive shaft by means of a Ringfeder internal expanding ring.  The pressure of the locking ring produce radial and tangential stresses in the hub, which are then combined with the stresses produced by the cable loads (radial compression and torque).  This was modeled using a combination beam, plate and solid element model, with cable tension loads applied at the rim and locking ring pressure loads applied as fixed displacements at the ID of the hub.

The analysis output showed that even with the loads imposed by locking ring, the material of the hub was capable of withstanding the stresses which resulted.

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last modified: 12 January 2007