Solution 2.12-2Bar between rigid supports172CHAPTER 2Axially Loaded Membersd1520mmd2525mmsY5250MPaDETERMINE THE PLASTIC LOADPP:At the plastic load, all parts of the bar are stressed tothe yield stress.Point C:FAC5sYA1FCB5sYA2P5FAC1 FCBPP5sYA11sYA25sY(A11A2)SUBSTITUTE NUMERICAL VALUES:5201 kN5(250MPa) ¢p4≤[(20mm)21(25mm)2]PP5(250MPa) ¢p4≤(d121d22)d2d1L2—L2—ABCPPFCBFACProblem 2.12-3A horizontal rigid bar ABsupporting a load Pis hungfrom five symmetrically placed wires, each of cross-sectional area A(see figure). The wires are fastened to a curved surface of radius R. (a) Determine the plastic load PPif the material of the wires iselastoplastic with yield stress sY. (b) How is PPchanged if bar ABis flexible instead of rigid?
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