5. Figure 2 shows cantilever bracket, which cross section is rectangle with b=2 in and d=1 in with fluctuating force F.
Posted: Tue Apr 12, 2022 9:56 am
5. Figure 2 shows cantilever bracket, which cross section is rectangle with b=2 in and d=1 in with fluctuating force F. height at root is D=1.125 and fillet radius at the root is r=0.5 in. The length of bracket is l=6 in and the force is located at a=5 in. The material is SAE1040 normalized carbon steel (machined finish) with Sut=80kpsi and Sy=60kpsi. max = 2200 lb "M w mean = 1200 lb F min = 200 lb beam d D b frame R (a) Find mean and alternating stresses at the root. (b) Construct the S-N curve. (c) Find the factor of safety based on Goodman-criteria. (d) Find the expected number of cycles.