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Problem 2.10-7 A stepped bar with a hole (see figure) has widths b 5 2.4 in. and c 5 1.6 in. The fillets have radii equal to 0.2 in. What is the diameter d max of the largest hole that can be drilled through the bar without reducing the load-carrying capacity? Solution 10-7 Stepped bar with a hole SECTION 2.10 Stress Concentrations 165 P P b d c P P b d c b 5 2.4in. c 5 1.6in. Fillet radius: R 5 0.2in. Find d max B ASED UPON FILLETS (Use Fig. 2-64) b 5 c 5 R 5 0.2 in. R/c 5 0.125 b/c 5 1.5 K < 2.10 < 0.317 bt s max P max 5 s nom ct 5 s max K ct 5 s max K ¢ c b ( bt ) d (in.) d / bK 0.3 0.125 2.66 0.329 0.4 0.167 2.57 0.324
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This note was uploaded on 09/20/2009 for the course COE 3001 taught by Professor Armanios during the Spring '08 term at Georgia Institute of Technology.

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