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Bar stock of initial diameter = 90 mm is drawn with a draft = 15 mm. The draw die has an entrance angle = 18°, and the coefficient of friction at the work-die interface = 0.08. The metal behaves as a perfectly plastic material with yield stress = 105 MPa. Determine
(a) area reduction,
(b) draw stress,
(c) draw force required for the operation, and
(d) power to perform the operation if exit velocity = 1.0 m/min.
The problem belongs to Civil Engineering and it is clarify about calculating benefits cost ratio for 3 different proposals for building a highway and its yearly maintenance and other benefits.
Determine the evaporation rate for a reservoir if the wind speed is 40 mph and the surface temperature is 15 degrees Celsius and the overlaying temperature is 25 degrees Celsius. and the relative humidity is 30 percent
The two-span continuous beam shown in Figure S5.1has a second moment of area that varies linearly from a maximum value of I at the center to zero at the ends. Determine the influence line ordinates, at intervals of 0.2 l , for the central vertical..
The steel beam ABCD shown is simply supported at A (pin) and supported at B and D by steel cables each having a diameter of 12mm. A force of 20 kN is applied at point C. For steel, let E = 209 GPa.
When you sighted the to the opposite end of the base line for the inaccessible point lab exercise, the target you used was 0.04 feet (about ½ inch) from the center of the station sighted.
A water pipeline system is made up of three links in parallel. In any given year, on average, 99 in 100 pumps do not fail. The conditions in the links are statistically independent of each other.
Why don't we assume that there is an unknown moment about B? It the solution it only shows a horizontal force at B. And is there a reason why the horizontal force at B is labeled By?
A 3-mi section of a two-lane, two-way highway located in a mountainous terrain is to be designed to carry a peak hour volume of 750 vehicles. Using the operational level of analysis
If the overall gear reduction ratio is 8 to 1, what is the maximum acceleration from rest (in ft/sec^2) for: a) the car with the base engine? b) car with the modified engine? Assume the car is on good dry pavement.
A concrete column with cross-sectional area is A= 120inches squared supports an axial compressive load P=9.0 kip, including the weight of the column. Determine the bearing stress in the soil. Concrete weighs 150lb/ft cubed
If 2500 balls are to be annealed per hour, determine the total rate of heat transfer from the balls to the ambient air.
The industrial discharges to the municipal sewers are 57 m3/day at 1,800 mg/L BOD from a slaughterhouse and 70 m3/day containing 32 kg of BOD from a soup-canning plant.
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