Question

A 2-in.-square aluminum strut is maintained in the position shown by a pin support at and by sets of rollers at B and C that prevent rotation of the strut in the plane of the figure. Knowing that LAB4 ft, determine (a) the largest values of L Bc and L c that can be used if the allowable load P is to be as large as possible, (b) the magnitude of the corresponding allowable load. Consider only buckling in the plane of the figure and use E -10.4 x 10 psi. Use a factor of safety of 3.5 with respect to buckling. CD BC LAB (a) L Bc5.60 CD1.40 (b) Pall33.8 ft ft

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Answer #1

3 -333in A. 下S Вс Le =0.5 LSC Lea.8 0. 5 Le.aub FS FS Le 3-5 ( 33.6)

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