The rigid bar DEF is welded at point D to the rolled-steel beamAB. For the loading shown, determine (a) the slope at point A,(b) the deflection at midpoint C of the beam. Use E 5 200 GPa.

Stress Transformation During the previous lesson, we determined a normal stress and a shear stress at locations within a loaded beam. Rather obviously, there are many situations in which a combination of normal and shear stresses exist at points within a material. It then becomes necessary to determine whether such a state of stress is “acceptable.” In other words, will the material withstand the combined stresses without failing Example Consider A 36 steel, and use a factor of safety of 3. ALLOW 12 ksi (E.1) The following state of stress is acceptable 10 ksi