A copper strip (Ec = 105 GPa) and an aluminum strip (Ea = 75 GPa) are bonded together to form the composite beam shown. Knowing that the beam is bent about a horizontal axis by a couple of moment . M = 35 N m, determine the maximum stress in (a) the aluminum strip, (b) the copper strip. Aluminum 6 mm Copper 6 mm 24 mm

Two equal and opposite couples of magnitude M = 23 kN•m are applied to the channel-shaped beam AB. The cross-section is shown, with the length of CD as L = 133 mm. Determine the maximum compressive stress in the cross-section. (The result is accurate to one decimal place, in the unit of MPa. Please write down only the absolute value of the final result) M A M' B 180 mm L E D -36 mm 30 mm 30 mm

The 6 × 12-in. timber beam has been strengthened by bolting to it the steel reinforcement shown. The modulus of elasticity for wood is 1.8 × 106 psi and for steel, 29 × 106 psi. Knowing that the beam is bent about a horizontal axis by a couple of moment M = 458 kip·in., determine the maximum stress in the wood and in the steel.     The maximum compressive stress in the block of wood is  ksi (include a negative sign). The maximum tensile stress in the steel is  ksi.

A steel pipe and an aluminum pipe are securely bonded together to form the composite beam shown. The modulus of elasticity is 200 GPa for the steel and 70 GPa for the aluminum. Knowing that the composite beam is bent by a couple of moment 500 N?m, determine the maximum stress (a) in the aluminum, (b) in the steel.

The couple M is applied to a beam of the cross section shown in a plane forming an angle β with the vertical. Determine the stress at (a) point A, (b) point B, (c) point D.

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handwritten-solutions, please!

2. Determine the maximum tensile and compressive stresses acting on section a-a of the curved beam shown. 200 mm 50 nm 50 KN 50 KN 100 mm

A.) Determine maximum bending stress in the brass and steel. B.) Determine the stress at the seam where the brass and steel are bonded together in the brass and in the steel

The 6 *12-in. timber beam has been strengthened by bolt-ing to it the steel reinforcement shown. The modulus of elasticity for wood is 1.8 * 106 psi and for steel 29 *106 psi. Knowing that the beam is bent about a horizontal axis by a couple of moment 450 kip·in., determine the maximum stress in (a) the wood, (b) the steel.