04-01ChapGere.0006

04-01ChapGere.0006 - 264 A-PDF Shear Forces and Purchase...

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Problem 4.3-9 A curved bar ABC is subjected to loads in the form of two equal and opposite forces P , as shown in the figure. The axis of the bar forms a semicircle of radius r . Determine the axial force N , shear force V , and bending moment M acting at a cross section defined by the angle u . Solution 4.3-9 Curved bar 264 CHAPTER 4 Shear Forces and Bending Moments P PP C B AO r A V N M u u M 5 Nr 5 Pr sin u © M O 5 0 ` ~ M 2 Nr 5 0 V 5 P cos u o F V 5 0 1 Ra 2 V 2 P cos u 5 0 N 5 P sin u © F N 5 0 Q 1 b 2 Ê N 2 P sin u 5 0 P C B r A V N M u u O P cos u P sin u B Problem 4.3-10 Under cruising conditions the distributed load acting on the wing of a small airplane has the idealized variation shown in the figure. Calculate the shear force V and bending moment M at the inboard end of the wing. Solution 4.3-10 Airplane wing 1.0 m 1600 N/m 900 N/m
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