a cantilever beam having a channel cross section is loaded as shown. a-find state of stress for point d. b-find principal stresses, maximum in-plane shear stress and their orientation.
Answers: a: Ox = - 20.6 MPa 25 kN Txy = 17.6 MPa 60 mm 20 mm b: 3 Al 0 = 10.1 MPa min max τ max = - 30.7 MPa = 20.4 MPa - 29.8° CW D X 60 mm 50 mm 110 mm P = + 15.2° CCW B 10 mm HHH 120 mm 10 mm
