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A Design Study in Ductile Iron - Dotson Company Pivot Frame

Design C -- Plate with Ribs and Cut-Outs

This design uses a flat plate in the support section with perimeter ribs and two long ribs in the back for stiffening.  

In addition, three cut-outs in the center panel reduce the overall weight without increasing stresses in the critical sections.  

This design keeps the stresses within limits at the joint where the trapezoidal frame meets the straight bars and has lower weight than Design A, meeting the weight target. 
   

Design C is the best choice.
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Copyright 2005 by the American Foundry Society. All rights reserved.
Address Comments to: jss@afsinc.org
Last Modified:September, 2005 by STG

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The Dotson Company.