determine the maximum shear stress at the fillet and the hol

determine the maximum shear stress at the fillet and the hole

((( only question number 2 )))

A flat bar as shown in Figure 1 is subjected to an axial tensile load P equal to 100 kips. Assuming that stress in the bar is limited to 30 kpsi, determine the thickness t required. Assume that the notch sensitivity factor q = 1. (OC-A, E). (Ans. 1.75 in.). shows a round shaft subjected to a torque of 7000 lb-in. Determine the maximum shear stress at the fillet and the hole. Assume that the notch sensitivity factor q = 1. (OC-A, E). (Ans. 48.12 kpsi, 131 kpsi)). In a card-notching machine, the cutter is made by stamping a steel plate, as shown in Figure 3. The cutter is bent upward (before heat treatment) as shown. The card is inserted at A, and the free end of the cutter is pressed down by the ram. Thereby cutting the notch in the edge of the card. Allowing a stress concentration factor at the fillets at the end of the slots equal to 1.3, determine the minimum length L to limit the bending stress equal to 20, 000 psi. The cards are 0.015 in. thick, and to notch the card the deflection of the cutter at A is 0.020 in. The plate thickness is 1/32 in. Assume that the notch sensitivity factor q = 1. (OC-A, E). (Ans. 1.35 in). A flat bar as shown in Figure 1 is subjected to an axial tensile load P equal to 100 kips. Assuming that stress in the bar is limited to 30 kpsi, determine the thickness t required. Assume that the notch sensitivity factor q = 1. (OC-A, E). (Ans. 1.75 in.). shows a round shaft subjected to a torque of 7000 lb-in. Determine the maximum shear stress at the fillet and the hole. Assume that the notch sensitivity factor q = 1. (OC-A, E). (Ans. 48.12 kpsi, 131 kpsi)). In a card-notching machine, the cutter is made by stamping a steel plate, as shown in Figure 3. The cutter is bent upward (before heat treatment) as shown. The card is inserted at A, and the free end of the cutter is pressed down by the ram. thereby cutting the notch in the edge of the card. Allowing a stress concentration factor at the fillets at the end of the slots equal to 1.3, determine the minimum length L to limit the bending stress equal to 20, 000 psi. The cards are 0.015 in. thick, and to notch the card the deflection of the cutter at A is 0.020 in. The plate thickness is 1/32 in. Assume that the notch sensitivity factor q = 1. (OC-A, E). (Ans. 1.35 in).

Solution

where the figure in the question for max stress

there is insufficient data

please find the link.for formulas

http://nptel.ac.in/courses/Webcourse-contents/IIT-ROORKEE/strength%20of%20materials/lects%20&%20picts/image/lect34/lecture34.htm