A steel cantilever beam, of length 2L, has an l-section, see Figure Q3. The cantilever beam is under a uniformly distributed load q = 200 kN/m applied in its vertical plane of symmetry at OA part of the span. The yield strength of the steel is [o] = 420 MPa; the Young's modulus E = 240 GPa. L= 3 m and the coordinates of Point H are x= 0 mm, y = -65 mm, z= 0 mm. O L q A L B X 20mm 10mm H 20mm -220mm b 180mm

Consider a point in a structural member that is subjected to plane stress. Normal and shear stress magnitudes acting on horizontal and vertical planes at the point are Sx= 14 MPa, S, = 29 MPa, and Sy = 39 MPa. (a) Determine the principal stresses (o,1 > op2) and the maximum in-plane shear stress Tmax acting at the point. (b) Find the smallest rotation angle 0, (counterclockwise is positive, clockwise is negative) that will rotate to principal directions. Then show these stresses in an appropriate sketch (e.g., see Figure 12.15 or Figure 12.16) Sy Answers: Opl = i MPa. Op2 = i MPa. Tmax = i MPa. Op i

A torque and two forces seen in the figure are applied. the diameter is 65mm. Determine the principal stresses And the maximum shear stress at K.

pru 7 Oy enüz žvaplanmadı Ot .00 üzerinden aretlenmiş Txy Soruyu aretle Ka Tnt Ox On (a) (b) On the surface of a structural member, stresses are given as ox=61 MPa, oy=32,7 MPa and Txy=-28,1 as shown in figure (a). Determine the maximum principal stress (MPa). Note: If the stress is compressive, use - sign. Yanıt: