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880_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

880_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

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Problem 11.5-5 Solve the preceding problem for a column with , and . E 30 * 10 6 psi e 0.20 in., L 12 ft, I 21.7 in. 4 874 CHAPTER 11 Columns Solution 11.5-5 Column with eccentric loads Column has pinned ends Use Eq. (11-54) for the deflection at the midpoint (maximum deflection): D ATA C RITICAL LOAD M AXIMUM DEFLECTION ( FROM E Q . 1) Units: kips inches Angles are in radians. d P d (0.20) [sec (0.08924 1 P ) 1] (2) P cr p 2 EI L 2 309.9 k I 21.7 in. 4 E 30 * 10 6 psi e 0.20 in. L 12 ft 144 in. d e c sec a p 2 A P P cr b 1 d (1) S OLVE E Q . (2) FOR P : L OAD - DEFLECTION DIAGRAM ; P 125.6 c arc cos a 0.2 0.2 + d b d 2 Problem 11.5-6 A wide-flange member ( ) is compressed by axial loads that have a resultant P acting at the point shown in the figure. The member has modulus of elasticity
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