Development of the Tilt-Edge Bellows Concept.
Final rept. 1 Jan 68-Sep 70,
BATTELLE MEMORIAL INST COLUMBUS OH COLUMBUS LABS
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A two and one-half year program was conducted to investigate the tilt-edge bellows concept. This involved the idea that the stresses at the convolution root and crown welds of a welded bellows could be minimized by appropriately tilting the convolution mid surfaces near the root and crown. The research program involved an extensive theoretical analysis of various convolution cross-sectional shapes to optimize the shape with respect to the maximum stress as well as the weld bead stresses. A particular optimized bellows with a 3.5-inch OD was fabricated and tested. The results of the tests verified that the tilt-edge bellows had superior fatigue resistance. Fatigue life predictions may thus be made with greater confidence for tilt-edge bellows than for conventional welded bellows designs. Author
- Manufacturing and Industrial Engineering and Control of Production Systems