O What force is required to punch a 20- mm-diameter hole in a plate that is 25 mm thick? The shear strength is 350 MN/m.. Puncher paripheral aea 20 mm e 25 mm thick Punched out 25 mm 20
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Simple stress and strain problem:
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- During a test of an airplane wing, the strain gage readings from a 45° rosette (see figure) are as follows: gage A, 520 × l0-6; gage B. 360 × l0-6; and gage C,-80 × 10-6. Determine the principal strains and maximum shear strains, and show them on sketches of properly oriented elements.A bar of 6-mm in diameter is only allowed to decrease at a maximum of 3.96% of its total length. What is the maximum force (Newtons) that can be applied? Consider the shear modulus = 602 MPa, and the Poisson's ratio as 0.20. Express your answer in three decimal places.If the ultimate shear strength of a steel plate is 42,000psi. What is the force necessary to puncha 0.75in diameter hole in a 0.625in thick plate
- Define the terms shear stress and shear strain, illustrating your answer by means of a simple sketch. Two circular bars, one of brass and the other of steel, are to be loaded by a shear load of 30 KN. Determine the necessary diameter of the bars (a) in single shear, (b) in double shear, if the shear stress in the two materials must not exceed 50 MN/m² and 100 MN/m² respectively. Ans: [27.6, 19.5, 19.5, 13.8mm.]What force is required in Newton to punch a 30-mm diameter hole in a plate that is 15 mm thick? The shear strength is 350 MN/m^2. question 2: A type of stress that acts coplanar with cross section of material.Why does the shear formula not give accurate results when used to determine the shear stress?
- A hole is to be punched out of a plate having a shearing strength of 281.48 N/mm². The compressive stress in the punch is limited to 351.85 N/mm² then the maximum thickness of the plate from which a hole 63.5mm in diameter can be punched is (in mm)PART 1 My answer Ay=14.38 Cy=13.62 Part 2 Determine the shear force acting at each of the following locations: (a) x = 4.25- (i.e., just to the left of point B.) (b) x = 4.25+ (i.e., just to the right of point B.) (c) x = 9.25-(i.e., just to the left of point C) (d) x = 9.25+ (i.e., just to the right of point C) My Answer: (a) V= 14.38 kN (b) V= 14.38 kN (c) V= 14.38 kN (d) V= 28 kN Part 3 Determine the bending-moment acting at each of the following locations: (a) x = 4.25-(i.e.. just to the left of point B.) (b) x = 4.25+ (i.e.. just to the right of point B.) (c) x = 9.25 m (i.e., at support C) (d) x = 8.25 m My Answer: (a) M= 61.115kN-m (b) M= -148.885 kN-m (c) M= -76.985 kN-m (d) M= -91.365 kN-m Part 4: Use your bending-moment diagram to determine the maximum positive bending moment, Mmax, pos, and the maximum negative bending moment, Mmax, neg. Use the bending-moment sign convention detailed in Section 7.2. The maximum negative bending moment is the negative moment with…What force is required to punch a 20-mm-diameter hole in a plate that is 25 mm thick? The shear strength is 450 MN/m2
- As information for the mechanic, it is desired to evaluate the variation in shear force along the length of the shaft. Therefore, what is the value of the shear force in the central section of the shaft (125 mm < x < 600 mm)? Options: a) The shear force in the central section of the shaft is 0 kN. B) The shear force in the central section of the shaft is 0.8 kN. c) The shear force in the central section of the shaft is 1.5 kN. d) The shear force in the central section of the shaft is 1.48 kN. e) The shear force in the central section of the shaft is 0.82 kN.The rotation in degrees of a shaft, 800 mm long subjected to atorque of 80 N-m, 10 mm in radius and shear modulus of 85 GPaisThe bolted connection illustrated below comprises one bolt and two plates. The bolt, which has a diameter of 20 mm, is threaded through a 22- mm diameter hole in both plates. The shear stress of the bolt is 78,000 MPa. Based on this information, determine the following What is the largest force F that can be placed on the joint without shearing the bolt? what is the normal stress, at the gross section area, in each plate? what is the normal stress, at the net section area, in each plate? what is the bearing (or contact) stress between the bolt and each plate?