Problem $3$

For the bracket shown in Figure and the data given below, determine the von Mises stresses at points A and B $.$

I$=100$mm$,$a$=400$mm$,$t$=10$mm

h$=20$mm$,$F$=50$N$,$od$=20$mm$,$id$=14$mm$.$

Problem $4$

Calculate the safety factor for the bracket in Problem $3$ using the distortion$-$energy, the maximum shearstress, and the maximum normal$-$stress theories. Comment on their appropriateness.

Assume a ductile material strength of S$\_($y$)=400$MPa.