QUESTION 1. The diameter of a pulley that is connected to the mid-span of a hollow shaft is 175mm. The pulley on the shaft is driven by a reciprocating compressor through a belt drive system, the ratio of the diameters of the connected pulleys on either sides is given as 1:2. The power transmitted by the hollow shaft is given as 45 kW while rotating at a speed of 350 rpm. The shaft has a span of 750mm which is supported on its ends by sturdy bearings that will not allow for self alignment and thereby generating bending moment at the supporting components. The tension ratio between the tight and slack sides of the belt is given as 1.9:1 with an angle of wrap of 180 degrees. Design the shaft considering that the available shaft material is BS970:070M55 that will fail in shear as per von Mises criteria, a factor of safety of 3.5 can be assumed for the material on its ultimate strength.

QUESTION 1. The diameter of a pulley that is connected to the mid-span of a hollow shaft is 175mm. The pulley on the shaft is driven by a reciprocating compressor through a belt drive system, the ratio of the diameters of the connected pulleys on either sides is given as 1:2. The power transmitted by the hollow shaft is given as 45 kW while rotating at a speed of 350 rpm. The shaft has a span of 750mm which is supported on its ends by sturdy bearings that will not allow for self alignment and thereby generating bending moment at the supporting components. The tension ratio between the tight and slack sides of the belt is given as 1.9:1 with an angle of wrap of 180 degrees. Design the shaft considering that the available shaft material is BS970:070M55 that will fail in shear as per von Mises criteria, a factor of safety of 3.5 can be assumed for the material on its ultimate strength.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

he head at the base of the nozzle of a Pelton wheel is 640 m. The outlet vane angle of the bucket is 15. The relative velocity at the outlet is reduced by 15% due to friction along the vanes. If the discharge at outlet is without whirl find the ratio of bucket speed to the jet speed. If the jet diameter is 100 mm while the wheel diameter is 1.2 m, find the speed of the turbine in rpm, the force exerted by the jet on the wheel, the Power developed and the hydraulic efficiency. Take Cv=0.97.
A pump draws water from a 200mm diameter suction pipe and discharges through a 150mm pipe in which the discharge is 80 L/s. The pressure at point A is -40KPa. The 150mm pipe discharges into air at point B as shown. If the head loss from point A to point B is 5m, determine the power needed to be given by the pump in horsepower.
The crank and connecting rod of a theoretical steam engine are 0.4 m and 1.6 m long, respectively. The crank makes 180 rpm in clockwise direction. When it has turned 45° from the inner dead center position, determine the: a) Velocity of piston, b) Angular velocity of connecting rod
Small vessels can be motorized via the attachment of a boat engine (Fig. 2a). These boat engines power an impeller that sucks in water through an intake pipe, which exits through an outlet pipe as a water jet (Fig. 2b). Given the intake pipe has diameter Din = 6 in and the outlet pipe has diameter Dout= 3 in, and the intake pipe meets the outlet pipe at an angle α = 120◦, calculate the flow rate needed to produce a thrust force of 1000 N.
Determine the angular acceleration of the 23-kg diving board the instant the man jumps off. Assume that the board is uniform and rigid, and that at the instant he jumps off the spring is compressed a maximum amount of 210 mm , ω=0, and the board is horizontal. Take k = 6.0 kN/m and Determine the vertical component of reaction at the pin AA the instant the man jumps off.
Given a system of pulley below, Block A has a mass of 50 kg. At point P it is recorded to have a velocity equal to 12 m/s with an increasing acceleration of 6 m/s². Determine the power input to Motor at M instant if its efficiency is given to be 0.80
A cylindrical tank, filled with water and axis vertical, is open at one end and closed at the other end. The tank has a diameter of 1.2m and a height of 3.6m. It is then rotated about its vertical axis with an angular speed w. a. Determine w in rpm so that one third of the volume of water inside the cylinder is spilled. b. Determine the largest pressure developed in the tank.
Find the ratio of the revolutions per minute for the fan pulley to the revolutionsper minute for the motor pulley.
Determine the linear impulse of the block at t = 3 seconds.
Water of density 1000 kg/m3 is pumped from a sump tank up a distance of H before exiting to atmospheric pressure, as shown in Figure P8.49. The entrance and exit have a loss coefficient of K = 1. Each bend also has a loss coefficient of K, but the valve has a loss coefficient of 2K. The pipe has a diameter D, L1 = L2 = 50D, and the friction factor f = 0.01. Find the power expended by the pump if the volume flow rate is 40 liters/s, given that D = 50 mm, and H = 2 m. Assume that the flow in the pipe is turbulent.
In the system shown in the figure, the pump moves 220 It/s of water through a system of horizontal pipes to the closed reservoir. The head of pressure at the pump inlet is -1.2 meters and at the outletof 58 meters. Determinea) The pressure on the free surface of the water in the tank,b) Draw the total line ofpressure and piezometric line. Use a hinge disc type foot valve.
The portable floor crane in the automotive shop is lifting a 350-lb engine. For the position shown compute the magnitude of the force supported by the pin at C and the oil pressure p against the 3.58-in.-diameter piston of the hydraulic-cylinder unit AB.Assume a = 5 in., b = 33 in., c = 17 in., e = 36 in., and 26°. C=? LB p=? Lb/in^2