Find the forces in bars AB, CD, ID, HG, HD. Use P as 82 KN
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Find the forces in bars AB, CD, ID, HG, HD. Use P as 82 KN
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- A tubular shaft being designed for use on a construction site must transmit 120 kW at 1,75 Hz, The inside diameter of the shaft is to be one-half of the outside diameter. If the allowable shear stress in the shaft is 45 MPa, what is the minimum required outside diameter d?Solve the preceding problem for a column with e = 0.20 in,, L = 12 ft, I = 2L7in4, and E = 30 × 106psi.Repeat the previous problem using sx= 12 MPa.
- A horizontal shaft AD supported in bearings at A and B and carrying pulleys at C and D is totransmit 75 kW at 500 r.p.m. from drive pulley D to off-take pulley C, Calculate the diameter of shaft. The data given is : P1 = 2 P2 (both horizontal), Q1 = 2 Q2 (bothvertical), radius of pulley C = 220 mm, radius of pulley D = 160 mm, allowable shear stress = 45 MPa.[Ans. 100 mm] Given CD=350mm CA=100mm AB=150mm BD=100mmA copper cylinder 150mm outside diameter has walls 25mm thick. End plates are stayed by a 25mm diameter bar of steel which passes through the cylinder and is just tight at -11°C. Estimate the stress in cylinder and stay when steam at atmospheric atmosphere (100°C) is admitted. Assume the end plates do not deform. Use the following values: ac = 17 x 106/°C Ec = 117 GPa as = 12 x 106/0c Es = 200 GPaA cap plate at the bottom of the brace distributes the load P = 660 kN to four flange plates (thickness, tf = 22.5 mm each) through a pin (diameter, dp = 55 mm) to two gusset plates (thickness, tg = 34 mm).[FS = 1.5 , σu = 250 MPa, τu = 400 MPa] Determine the shear stress in the pin? The answer in MPa Determine the bearing stresses in the gusset plates? In MPa Determine the bearing stresses in the flange plates? In MPa Determine the maximum allowable load P that can be applied to this connection if the required factor of safety is FS and theultimate normal and shear stresses in the plates are llimited toσu and τu, respectively?
- A steel bar 50 mm wide, 12mm thick and 300 mm long is subjected to an axial pull of 84 kN. Find the changes in the length, width, thickness and the volume of the bar. Take E = 200 GPa and Poisson's ratio= 0.32 δt = 0.0027mm (decrease), δV = 45.36mm³ (increase)][Note: Dont attempt this question second time if u have already provided the solution one time ] The stepped shaft in the figure transmits 19.2 kW of power at 180 rpm. Determine the required shaft diameter using the maximum strain energy (Von Mises) hypothesis. Take L=0.8 m, F=6kN, τem=72 MPa, σem= 108 MPa.With pressure steel tank axis α = 750manufactured as degree angle helical weldedreferences Tank radius r = 0.80 m. wall thickness is 15 mm The internal pressure of the Tank is p = 2.8 kPa. Elasticity modulus of steel used in manufacturing e = 200 GPa and position repair ν = 0.3 stop For the cylindrical part of the tank; a-) Find circular and longitudinal stresses. b-) Find the largest in-plane and out-plane shear stresses. c-)Find a circular and longitudinal shape change. d-)Find normal and shear stresses formed in the welding seam. These stressesshow on the properly rotated element.
- Given: l1=1,1l ; l2=1,4l ; l3=3l; F1=1,9P; F2=-0,3P; F3 =-2P. Parameter of length l=30cm; cross section proportion: b=1,2h; parameter of loading P=27kN. The rod is made of steel with yielding stress σY=220MPa; factor of safety n=1,6. Find: the height (in mm) of cross section from strength calculation h = ?A copper cylinder 150mm outside diameter has walls 25mm thick. End plates are stayed by a 25mm diameter bar of steel which passes through the cylinder and is just tight at -11°C. Estimate the stress in cylinder and stay when steam at atmospheric atmosphere (100°C) is admitted. Assume the end plates do not deform. Use the following values: αC = 17 x 10-6/°C EC = 117 GPa αs = 12 x 10-6/°CA solid steel shaft 3 m long is stressed to 65 MPa when twisted through 3 degrees. Using G = 81 GPa, what power can be transmitted by the shaft at 125 r/s? Answer must be in kW