고체역학 (Beer) — Introduction—Concept of Stress: Problem 1.51

1.51 Link AC is made of a steel with a 65-ksi ultimate normal stress and has a \(\frac{1}{4} \times \frac{1}{2}\)-in. uniform rectangular cross section. It is connected to a support at A and to member BCD at C by \(\frac{3}{8}\)-in.-diameter pins, while member BCD is connected to its support at B by a \(\frac{5}{16}\)-in.-diameter pin. All of the pins are made of a steel with a 25-ksi ultimate shearing stress and are in single shear. Knowing that a factor of safety of 3.25 is desired, determine the largest load P that can be applied at D. Note that link AC is not reinforced around the pin holes.