234_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

234_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

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Unformatted text preview: Sec_2.8-2.12.qxd 228 9/25/08 11:44 AM Page 228 CHAPTER 2 Axially Loaded Members Solution 2.10-4 Round brass bar with upset ends Use Fig. 2-65 for the stress-concentration factor: E 0.12 mm SUBSTITUTE NUMERICAL VALUES: L2 0.1 m L1 0.3 m R radius of fillets d PL1 PL2 b+ 2a EA2 EA1 (0.12 mm) (100 GPa) s nom P 26 mm 20 mm 2 20 2 2(0.1 m) a b + 0.3 m 26 3 mm 3 mm 20 mm R D1 Use the dashed curve in Fig. 2-65. K dEA1A2 2L2A1 + L1A2 max K Problem 2.10-5 Solve the preceding problem for a bar of monel Solution 2.10-5 d2 d1 L1 L2 Round bar with upset ends 2a PL1 PL2 b+ EA2 EA1 Solve for P: P s nom 0.0040 in. L1 5 in. R radius of fillets R P A1 dEA2 2L2A1 + L1A2 20 in. L2 dEA1A2 2L2A1 + L1A2 Use Fig. 2-65 for the stress-concentration factor. 106 psi 0.2 in. ; L2 d 25 1.6 (1.6) (28.68 MPa) nom d2 P metal having the following properties: d1 1.0 in., d2 1.4 in., L1 20.0 in., L2 5.0 in., and E 25 106 psi. Also, the bar lengthens by 0.0040 in. when the tensile load is applied. 28.68 MPa 0.15 46 MPa E dE A1 2L2 a b + L1 A2 dE d1 2 2L2 a b + L1 d2 100 GPa Solve for P: dEA2 2L2A1 + L1A2 P A1 s nom 1.4 in. 1.0 in. 2 dE d1 2 2L2 a b + L1 d2 dE A1 2L2 a b + L1 A2 ...
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This note was uploaded on 12/22/2011 for the course MEEG 310 taught by Professor Staff during the Fall '11 term at University of Delaware.

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