Estimate the maximum completely reversed bending moment that can be applied to the ends of the...

 

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Estimate the maximum completely reversed bending moment that can be applied to the ends of the plate shown in Figure 4.40 if the plate is machined from AISI 4320 steel having S_u = 140 ksi and S_y = 90 ksi. The rectangular plate is 0.5 in thick, 3 in wide, and has a central hole 0.5 in in diameter. An infinite life with 90% reliability and a safety factor of 2 are required. In the quiz, please answer the following questions with a numerical answer, limited to 2 decimal places (unless stated otherwise). M M Su = 140 ksi Sy = 90 ksi h = 0.5 in. b= 3 in. d = 0.5 in. 90% reliability SF = 2 Figure 4.40: Plate with hole subjected to completely reversed bending moment Question 1 What is the ultimate strength of the material (in ksi)? Question 2 What is the yield strength of the material (in ksi)? Question 3 What is the R.R.Moore endurance limit, S_n' (in ksi)? Question 4 What is the load factor, C_L for this design problem? Question 5 What is the reliability factor, C_R for this problem (up to 3 decimals)? 0.5 pts 0.5 pts 4 pts 1 pts 1 pts Question 6 Given that the hole in the plate causes stress gradients, what is the gradient factor, C_G for this problem (up to 2 decimals)? Question 7 What is the surface finish factor for the material in this oblem (up to 2 decimals) Question 8 What is the endurance limit, S_n, for this problem (up to 3 decimal places) in ksi? Question 9 What is the stress concentration factor, K_t, for this problem (up to 2 decimal places)? Question 10 What is the fatigue stress concentration, K_f (up to 2 decimals)? Question 11 What is the bending moment that accounts for the factor of safety (up to 2 decimal places) in lbf-ft? 1 pts 1 pts 4 pts 2 pts 2 pts 3 pts Estimate the maximum completely reversed bending moment that can be applied to the ends of the plate shown in Figure 4.40 if the plate is machined from AISI 4320 steel having S_u = 140 ksi and S_y = 90 ksi. The rectangular plate is 0.5 in thick, 3 in wide, and has a central hole 0.5 in in diameter. An infinite life with 90% reliability and a safety factor of 2 are required. In the quiz, please answer the following questions with a numerical answer, limited to 2 decimal places (unless stated otherwise). M M Su = 140 ksi Sy = 90 ksi h = 0.5 in. b= 3 in. d = 0.5 in. 90% reliability SF = 2 Figure 4.40: Plate with hole subjected to completely reversed bending moment Question 1 What is the ultimate strength of the material (in ksi)? Question 2 What is the yield strength of the material (in ksi)? Question 3 What is the R.R.Moore endurance limit, S_n' (in ksi)? Question 4 What is the load factor, C_L for this design problem? Question 5 What is the reliability factor, C_R for this problem (up to 3 decimals)? 0.5 pts 0.5 pts 4 pts 1 pts 1 pts Question 6 Given that the hole in the plate causes stress gradients, what is the gradient factor, C_G for this problem (up to 2 decimals)? Question 7 What is the surface finish factor for the material in this oblem (up to 2 decimals) Question 8 What is the endurance limit, S_n, for this problem (up to 3 decimal places) in ksi? Question 9 What is the stress concentration factor, K_t, for this problem (up to 2 decimal places)? Question 10 What is the fatigue stress concentration, K_f (up to 2 decimals)? Question 11 What is the bending moment that accounts for the factor of safety (up to 2 decimal places) in lbf-ft? 1 pts 1 pts 4 pts 2 pts 2 pts 3 pts

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Answers 1 ultimate strength 140 ksi 2 yield strength 90ksi 3 RR Mo... View the full answer