고체역학 (Beer) — Pure Bending: Problem 4.200

4.200 Determine the maximum stress in each of the two machine elements shown. Given Data from Figure P4.200: Applied Loads: Two forces of magnitude $P = 400\text{ lb}$ each, acting in opposite directions to form a couple. Distance between forces: $d_{\text{load}} = 2.5\text{ in.}$ Element thickness: $t = 0.5\text{ in.}$ Element maximum width: $D = 3\text{ in.}$ Element minimum width (at the critical section): $d = 1.5\text{ in.}$ Radius of notches/fillets: $r = 0.3\text{ in.}$