PROBLEM 4.71 A bar of rectangular cross section shown is made of a steel that is assumed to be elastoplastic with E = 20

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Problem 4 71 A Bar Of Rectangular Cross Section Shown Is Made Of A Steel That Is Assumed To Be Elastoplastic With E 20 1 (31.3 KiB) Viewed 59 times

PROBLEM 4.71 A bar of rectangular cross section shown is made of a steel that is assumed to be elastoplastic with E = 200 GPa and Oy = 320 MPa. Determine the bending moment M for which (a) yield first occurs, (b) the plastic zones at the top and bottom of the bar are 12 mm thick. Draw the stress diagrams side-by-side with the cross section for each case (a and b) and write the relevant values of stresses on the diagram. 30 mm 50 mm