9-39. Determine the principal stresses acting at point B, which is located just on the web, below the horizontal segment on the cross section. Show the results on a properly oriented element located at this point. Although it is not very accurate, use the shear formula to calculate the shear stress.

•5-21. The 60-mm-diameter solid shaft is subjected to the distributed and concentrated torsional loadings shown. Determine the absolute maximum and minimum shear 2 kN-m/m stresses on the outer surface of the shaft and specify their locations, measured from the fixed end A. 1.5 m 1200 N-m B 0.8 m

The solid rod has a radius of 30 mm. Determine the state of stress at points a and b. Write each state of stress in the 500 mm form of a tensor, observing the z y-z coordinate system shown, and sketch the stresses acting on a differential element at cach point. e= 30 mm 10 kN

9-63. When the temperature is at 30 °C, the A-36 steel pipe fits snugly between the two fuel tanks When fuel flows through the pipe, the temperatures at ends A and B rise to 130 °C and 80 °C, respectively. If the temperature drop along the pipe is linear, determine the average normal stress developed in the pipe. Assume each tank provides a rigid support at A and B. 150 mm. 10 mm- Section a -a

Solve shoe all steps and solition

The grains of wood in the board make an angle of 20° with the horizontal as shown. Determine the normal and shear stresses that act perpendicular and parallel to the grains if the board is subjected to an axial load of 250 N.

*7-36. The pedestal has a triangular cross section as shown. If it is subjected to a compressive force of 2250 N, specify the x and y coordinates for the location of point P(x, y), where the load must be applied on the cross section, so that the average normal stress is uniform. Compute the stress and sketch its distribution acting on the cross section at a location removed from the point of load application. X 75 mm 300 mm 150 mm 2250 N Prob. 7-36 P(x,y) y

R7-5. Determine the average punching shear stress the circular shaft creates in the metal plate through section AC and BD. Also, what is the bearing stress developed on the surface of the plate under the shaft? 40 kN - 50 mm - Ti0 mm -60 mm -120 mm

Use Mohr’s Circle, make a sketch of the circle with relevant points.

8-2. Determine the state of stress on an element at the same point oriented 30° clockwise with respectto the element shown. Sketch the results on the element.