Question

The internal shear force at a certain section of a steel beam is V=185 kN. The beam cross section shown in the figure has dimensions of tf=17 mm, bf=300 mm, d=394 mm, and tw=10 mm. Determine:

(a) the shear stress at point A, which is located at yA=71 mm below the centroid of the wide-flange shape.

(b) the maximum horizontal shear stress in the wide-flange shape.        

The internal shear force at a certain section of a steel beam is V= 185 kN. The beam cross section shown in the figure has dimensions of t= 17 mm, b d 394 mm, and f= 10 mm. Determine: = 300 mm, (a) the shear stress at point A, which is located at y = 71 mm below the centroid of the wide-flange shape. (b) the maximum horizontal shear stress in the wide-flange shape. Ул A Below, enter the magnitudes of the shear stresses, so enter positive values for both answers. (a) TA MPa MPа (b) Tmax i

Answer 1

Sof V185 KN a) Sheas toeas@ pofn (A 36 394 C-G v. A- c.G Ib pointA 194 BD hd3 300 x394 | 2 300 mn D= 294 mm (s00-16) - 290 mm 260mm widlt Point A , = 10mm A,yA A.T A 2 77935 +43350 Shaded aiea 2,285 m 3 v. A.y D 185 xlo x| 2 1 28S 4.o15 x 10 5.58 Mpa

b) maximum hai3ontal Aheah e at A lways hortgonal ak Ahess exist mid pri Ahaped beamg Hente, max hoizntal ^hoal Jhem ocuyn at a C-G. V. A.Y Max I.b A,,A A.y 186 icxi80x103)t(T 3co - + AY 300 92600 + 4 335 = \96935 mm3. 2 85 Kl0 196935 4.615x1 www