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A circular cylindrical rod with a uniform cross-sectional area of 20 cm2 is subjected to a mean axial force of 120 kN. The fatigue strength of the material, σa = σfs, is 250 MPa after 106 cycles of fully reversed loading and σTS = 500 MPa. Using the different procedures discussed in this chapter, estimate the allowable amplitude of force for which the shaft should be designed to withstand at least one million fatigue cycles. State all your assumptions clearly.
Repeat LEM(Limit Equilibrium Method) analysis in clay (undrained) using a circular failure surface, with the center of the circle a distance h above the edge of the footing. What ratio of h/B gives the minimum value of Nc? How does this compare with ..
The mean score of students on an aptitude test is 72 points with a standard deviation of 8 points. What is the probability that two groups of students, consisting of 28 and 36 students respectively,
if the density of the clay is equal to 2.0 Mg/m3 ,calculate the total vertical stress ,pore water pressure and effective vertical stress at a depth of 5 meters below ground level.
A beryllium copper wire having diameter of 1-50 mm and length of 40mm is used as a small torsion bar in an instrument. determine what angle of twist would result in the wire when it is stressed to 250 mpa.
Liquid water is to be pumped by a 10-kW pump from 100 kPa at a rate 5 kg/s. What is the highest pressure the water can reach at the exit? Neglect the kinetic and potential energy change of the water. Take the specific volume of water as constant at 0..
A single screw extruder is being used to process pregelatinized starch. The screw dimensions are as follows: channel width 3 cm, channel height 0.5 cm and screw length 50 cm. The wall velocity is estimated to be 0.31 m/s.
The bar under the applied force is now 2.448 meters long. Calculate the following for the bar: a) engineering stress, b) engineering strain, c) true strain, d) Young's modulus, e) What additional information would you need to calculate the true st..
Create a simple federated BIM model of a Pedestrian footbridge for the Campus - This is for the primary purpose of delivering BIM asset information to the project team at Project Concept Stage.
A bar is under uniform axial loads. AB is 1 foot and has a area of .5 in^2 and BC is 1 foot and has an area of .3 in^2. AB has a 1000lb force putting it under tension and BC has a 500lb force putting it under compression. Find stresses in AB and BC a..
to provide knowledge and practice autocad software package for engineering activities.as a professional engineer you
The bracket is subjected to the two forces shown. Express each force in Cartesian vector form and then determine the resultant force FR. Find the magnitude and coordinate direction angles of the resultant force.
A WTP Operator is trying to size a pump that takes water from a WTP holding tank and sends it to a house on a hill above the plant. The operator's goal is to have 60 psi of water pressure entering the house.
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