- The State Of Stress At A Point On The Surface Of A Wooden Support Beam Is Sketched In The Figure Below Which Is Not Dra 1 (138.45 KiB) Viewed 27 times
The state of stress at a point on the surface of a wooden support beam is sketched in the figure below, which is not drawn to scale. The direction of the grain of the wood with respect to the known stresses is also shown at an angle of 0 = 29° to the element. The normal stress ox is 6 MPa and the normal stress Oy is -8 MPa. = Oy Calculate (a) the normal stress perpendicular to the grain and (b) the shear stress parallel to the grain. Give your answers in MPa, to 3 s.f. (a) Normal stress: 6.47 MPa Your last answer was interpreted as follows: 6.47 (b) Shear stress: 20.4 MPa Your last answer was interpreted as follows: 20.4