PRELIMINARY REPORT ON DEFLECTION OF TUBE SHEETS. Research Report 100FF996- R6X
The deflections of a perforated epoxy resin tube sheet were studied. In each test the sheet was supported at a 9in. radius and loaded by a uniformly distributed load applied by lead shot or sand acting over a very thin flexible gasket. In two of the six tests the weight of the sheet alone was used to obtain the desired deflection. A triangular array of perforations was used with a pitch distance between hole centers of 2R = 0.500 inch and hole diameter of 2p = 0.375 inch. Thus the minimum ligament width between perforations is 2h = 2R - 2p = 0.125 inch. The ligament efficiency is h/R or 25%. Deflections calculated using experimentally determined elastic constants give the best agreement with the measured deflections. The theoretically obtained elastic constants of Malkin are in better agreement with those obtained experimentally and are more realistic than those of Horvay. The Salerno modification of the Malkin and Horvay theories is not significant and leads to discontinuities for a certain range of H/R. Measured deflections on tube sheet models and calculated deflections using the Sampson bending elastic constants indicate a maximum stiffness at H/R = 2.25 for the case of h/R = 1/4 and v = 1/2. (auth)
- Research Organization:
- Westinghouse Electric Corp. Research Labs., Pittsburgh
- DOE Contract Number:
- NOBS-67500
- NSA Number:
- NSA-17-000256
- OSTI ID:
- 4773741
- Report Number(s):
- WAPD-DLE-320
- Resource Relation:
- Other Information: For Westinghouse Electric Corp. Bettis Atomic Power Lab., Pittsburgh. Orig. Receipt Date: 31-DEC-63
- Country of Publication:
- United States
- Language:
- English
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