A sandwich beam having steel faces enclosing a plastic core is subjected to a bending moment M = 5 kN · m. The thickness of each steel face is t = 3 mm with a modulus of elasticity E_s = 200 GPa. The height of the plastic core is h_p =140 mm, and its modulus of elasticity is E_p = 800 MPa. The overall dimensions of the beam are h = 146 mm and b = 175 mm.  Using the transformed-section method, determine the maximum tensile and compressive stresses in the faces and the core.

Transcribed Image Text:

IN h 2 b = 175 mm 1 t = 3 mm 1 h = 146 mm h₂ = 140 mm = 3 mm