2. (50 pts) A simply supported beam is rested at points A and B, with external transverse loadings shown in the left figure. The cross section at point C and its dimension is illustrated in the right figure. (a) (25pts) Draw the shear force and bending moment diagrams for the beam. (b) (25pts) Determine the shear stress and normal stress at point E on Section C. 2.5 kips/ft 15 kips A C D B Section C 6 ft 3 ft 6 ft y x z y E h=1ft b=0.5ft Section C 3 (20 pts) Based on the Problem 2, what are the principle stress values (namely the maximum and minimum normal stress) at point E on Section C when rotating the coordinate system?
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From the given information, we know that the external loadings consist of a distributed load of 2.5 kips/ft and a point load of 15 kips at point C. The beam is simply supported at points A and B, so we can assume that there are vertical reactions at these Show more…
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