Unformatted text preview: 2 p (5.5 in.) 2 (1.0 in.) 5 6314 psi Problem 3.10-2 A solid circular bar having diameter d is to be replaced by a rectangular tube having cross-sectional dimensions d 3 2 d to the median line of the cross section (see figure). Determine the required thickness t min of the tube so that the maxi-mum shear stress in the tube will not exceed the maximum shear stress in the solid bar. Solution 3.10-2 Bar and tube t 2 d t d d S OLID BAR (Eq. 3-12) R ECTANGULAR TUBE t max 5 16 T p d 3 A m 5 ( d )(2 d ) 5 2 d 2 (Eq. 3-64) (Eq. 3-61) E QUATE THE MAXIMUM SHEAR STRESSES AND SOLVE FOR t If t . t min , the shear stress in the tube is less than the shear stress in the bar. t min 5 p d 64 16 T p d 3 5 T 4 td 2 t max 5 T 2 tA m 5 T 4 td 2 d t 2 d d A-PDF Split DEMO : Purchase from www.A-PDF.com to remove the watermark...
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- Spring '08
- Shear Stress, maximum shear stress, approximate theory