3) If the ali owa ble stresses are :- 6t = 165Min,"sc -100MPA, T=7014 Par determinet mux. value of w.
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- .4 The stresses on an clement arc known to be sx= 120 MPa, sy= 100 MPa, and txy= 75 MPa. Find the stresses on an inclined section through the element at an angle ? = 45°.The hollow drill pipe for an oil well (sec figure) is 6,2 in. in outer diameter and 0.75 in. in thickness. Just above the bit, the compressive force in the pipe (due to the weight of the pipe) is 62 kips and the torque (due to drilling) is 185 kip-in. Determine the maximum tensile, compressive, and shear stresses in the drill pipe.Repeat the previous problem using ? = 50° and stresses on the rotated element: sy1= 70 MPa, ??y1=-82 MPa, and tx1y1=-35 MPa.
- Partial answer (a) max and min shear stress = +- 10.6 kpsi (b) vB=-0.0102 in and wB=.0234 inShow whether it is safe by calculating the stresses at point A according to the Tresca Criteria. (Diameter: 20 mm, σA = 320 MPa)SS 304 steel shaft is 3 m long and has an outer diameter of60 mm. When it is rotating at 60 rad/s, it transmits 30 kWof power from the engine to the generator. Determine thefollowing: a. The smallest thickness of the shaft if the allowableshear stress is 150 MPa and the shaft is restricted notto twist more than 0.08 rad. Use G for steel = 83 GPa. b. The percentage savings in weight had the generatorutilized a solid shaft. Assume same material, length andtorque capacity.
- Find normal stress at a,b,c,d (t wall = 10mm)An AISI 1035 CD steel tube has an OD = 45 mm and a wall thickness of 5 mm. What maximum external pressure can this tube withstand if the largest principal normal stress is not to exceed 80 % of the minimum yield strength of the material? Assume ?? = 0.How can we find the maximum normal and maximum shear stress at the point?
- How did you get the third step where Ed/dt +Es/dt is equal to stress/n +1/E(d stress/dt)Design a key to transmite 40 kw power by a shaft of 50 mm diameter which rotates 1200 r.p.m , if the permissible shear and crushing stresses are 35 N/mm and 65 N/mm respectively, take the key length 30 mm.Q-1 ) A thin cylinder of inner radius 150 mm and thickness 9 mm is subjected to an internal pressure of 9 MPa. The average circumferential (hoop) stress in MPa isa) 150 MPA b ) 125 MPa c) 175 MPa d ) 200 MPa e) none of these