The composite beam is made of steel (A) bonded to brass (B) and has the cross section shown in Figure 2. If it is subjected to a moment of M = 6.5 kN.m, determine the maximum bending stress in the brass and steel. Also, what is the stress in each material at the seam where they are bonded together? The elastic modulus for the brass is EBrass = 100 GPa and the elastic modulus for the steel is Esteel = 200GPa. 150 mm B N M 175 mm 200 mm X

The figure shows the cross-section of a beam that is composed of a wide-flanged structural profile, whose specification is indicated in the figure, and two steel plates, joined by means of screws, placed in pairs with a longitudinal separation of 20 cm . If the beam is subjected to a vertical shear force of 25 KN, determine the shear stress supported by each bolt in the topsheet. Please add the free diagram body.

The cross-sectional dimensions of a beam are shown in the figure. Assume a = 45 mm, b = 75 mm, t = 4 mm and d =55 mm. (a) If the bending stress at point Kis 54 MPa (C), determine the internal bending moment M₂ acting about the z centroidal axis of the beam. (b) Determine the bending stress at point H. The bending stress is positive if in tension and negative if in compression. IT H Answers: (a) M₂= (b) og = i 945.9 144.881 d N-m MPa

B d₁ dz A M₁ d3 A copper core is bonded to a steel tube. The inner and outer diameters of the steel tube are d₂ = 90 mm and da = 45 mm, respectively. The copper and steel have shear moduli of Geu = 24 GPa and Gst = 75 GPa. If a moment of M₁ = 600 Nm is applied at the end of the composite shaft, find a. The portion of the applied moment carried by the steel tube Tat= Nm b. The portion of the applied moment carried by the copper core Teu = Nm c. The maximum shear stress in the steel tube Tst= MPa d. The maximum shear stress in the copper core Tex = MPa