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- Solve the preceding problem if the internal pressure is 3,85 MPa, the diameter is 20 m, the yield stress is 590 MPa, and the factor of safety is 3.0. (a) Determine the required thickness to the nearest millimeter. (b) If the tank wall thickness is 85 mm, what is the maximum permissible internal pressure?Two steel rods are welded together (see figure): the seam is oriented at angle ? = 50°. The stresses on the rotated element are sx1=10 ksi, sy1= -12 ksi, and tx1y1= -5 ksi. Find the state of plane stress on the clement if it is rotated clockwise to align the x3 axis with the longitudinal axis of the rods.Assume that the axial load P applied to the lap joint is distributed equally among the three 20-mm-diameter rivets. What is the maximum load P that can be applied if the allowable stresses are 40 MPa for shear in rivets, 90 MPa for bearing between a plate and a rivet, and 120 MPa for tension in the plates?
- 2. A 30-mm bolt with an initial tension of 35 kN is subjected to several types of stresses during initial tightening or due to screwing up forces. If the bolt has a core diameter of 25.7 mm and considering 5 threads are already engaged with the nut, calculate the shear stress across the thread and the crushing stress between the threads. Assume 3.5 mm as the width of the thread section at the root.A cylinder head stud has a diameter of 14mm at the bottom of the thread. If the maximum ten sile stress allowed in the material is 30MPa. Calculate the safe load the stud can carry.A circular shaft of diameter 120 mm is welded to a rigid plate by a fillet weld of size 6 mm. If a torque of 8 kNm is applied to the shaft, what is the maximum stress in the weld?.
- If the allowable normal stress is 120MPa and the allowable shear stress is 60MPa, what is the B diameter of pin?In a tensile test on a steel tube of external diameter 18 mm and internal diameter 12 mm, an axial pull of 2 kN produces stretch of 6.72x 10^-3 mm in a length of 100 mm and a lateral contraction of 3.62x10^-4mm in outer diameter. Calculate the values of three modulus and Poisson's ratio of the materialThe stress in a wire of diameter 2 mm if a load of 100 gm is applied to a wire.
- A 5⁄8-inch-thick tension member is connected to two 1⁄4-inch splice plates, as shown in Figure The loads shown are service loads. A36 steel and 5⁄8-inchdiameter, Group A bolts will be used. If slip is permissible, how many bolts are required? Each bolt centerline shown represents a row of bolts in the direction of the width of the plates.A flanged bolt coupling is used to connect a solid shaft 90 mm in diameter to a hollow shaft 100 mm in outsude diameter and 90 mm in inside diameter. If the allowable aring stress in the shafts and the bolts is 60 MPa, how many 10 mm diameter steel bolts must be used on a 200 mm diameter bolt circle so that the coupling will be as strong as the weaker shaft?A wire with circular base of radius 3 mm was subjected to tensile stress of 13.5 N. If half the amount of stress is to be applied to a wire with square base of 1.86 mm width, what must have been the force (in Newton) applied to this new wire?