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01-02ChapGere.0012

# 01-02ChapGere.0012 - M AXIMUM CLAMPING FORCE C ult t ult 5...

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SECTION 1.7 Allowable Loads 43 Problem 1.7-10 A metal bar AB of weight W is suspended by a system of steel wires arranged as shown in the figure. The diameter of the wires is 2 mm, and the yield stress of the steel is 450 MPa. Determine the maximum permissible weight W max for a factor of safety of 1.9 with respect to yielding. 1.75 m A W B 1.75 m 0.75 m 0.75 m 2.5 m Solution 1.7-9 Forces in pliers F REE - BODY DIAGRAM OF ONE ARM C clamping force R reaction at pin a 3.75 in. b 1.60 in. d diameter of pin 0.20 in. F vert 0 P C R 0 R P C P ¢ 1 a b C ¢ 1 b a C Pa b P Cb a C P a
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Unformatted text preview: M AXIMUM CLAMPING FORCE C ult t ult 5 50ksi V ult 5 t ult A pin 5 1571lb 5 1100lb M AXIMUM LOAD P ult A LLOWABLE LOAD P allow 5 157 lb P allow 5 P ult n 5 469.8 lb 3.0 P ult 5 V ult 1 1 a b 5 1571 lb 1 1 3.75 in. 1.60 in. 5 469.8 lb C ult 5 V ult 1 1 b a 5 1571 lb 1 1 1.60 in. 3.75 in. 5 (50 ksi) ¢ p 4 ≤ (0.20 in.) 2 V 5 R Ê ∴ C 5 V 1 1 b a Ê and P 5 V 1 1 a b A-PDF Split DEMO : Purchase from www.A-PDF.com to remove the watermark...
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