Question

In: Civil Engineering

A hydraulic punching machine is used to make holes in a plate using two steel punches...

A hydraulic punching machine is used to make holes in a plate using two steel punches having
different diameter. By applying a compressive stress of 37 x103 kN/m2 using a punch of diameter
50 mm, the maximum shear stress developed in the plate was found to be 290 N/mm2. Suggest the
value for thickness for the plate suitable for this loading condition.
What will be the change in the shear stress when a compressive force of 85 kN is applied on the
plate of same thickness using another punch having diameter 12% more than the first one? Check
which one of the steel punches used is safe against shear, if the permissible safe shear stress on
the plate based on the design conditions is limited to 300 N/mm2. Based on the results, discuss
how the thickness of the plate and the diameter of the punch can be modified to withstand the safe
shear stress.

Solutions

Expert Solution


Related Solutions

Q5: A hydraulic punching machine is used to make holes in a plate using two steel...
Q5: A hydraulic punching machine is used to make holes in a plate using two steel punches having different diameter. By applying a compressive stress of 37 x103 kN/m2 using a punch of diameter 50 mm, the maximum shear stress developed in the plate was found to be 290 N/mm2. Suggest the value for thickness for the plate suitable for this loading condition. What will be the change in the shear stress when a compressive force of 85 kN is...
A marine engineer uses hydraulic machine. The hydraulic system of the machine consisting two ​cylinders connected...
A marine engineer uses hydraulic machine. The hydraulic system of the machine consisting two ​cylinders connected with a flexible pipe. The cylinders and pipe is filled by incompressible liquid ​and both cylinders are fitted with moveable pistons. The area of small piston is 0.058 m2 and the ​area of large piston is 0.24 m2. ​​​​​​​[10 marks] ​(a) ​Draw a complete arrangement of hydraulic system.​​​​ ​(b)​If the pressure exerted 3000 KPa the calculate the force applied at smaller piston. ​​​​​​​​​​​​ ​(c)​Calculate...
Ellay steel corp. is evaluating two different steel bending machines using its WACC of 7.5%. Machine...
Ellay steel corp. is evaluating two different steel bending machines using its WACC of 7.5%. Machine A costs $320,000, has a three-year life, and has pre-tax operating costs of $83,000 per year. Machine B costs $495,000, has a five-year life, and has pre-tax operating costs of $42,000 per year. Both bending machines are in Class 8 (CCA rate of 20% per year). Recall that Ellay’s tax rate is 35%. Assume that there is no salvage value for both machines and...
Two drilling machines(machine A and machine B) can drill deep holes with different diameters on workpieces....
Two drilling machines(machine A and machine B) can drill deep holes with different diameters on workpieces. The processing time of the two machines are random due to various workpiece materials. Suppose the time it takes machine A to complete drilling one hole is exponentially distributed with mean 1.5,and the time it takes machine B to complete drilling one hole is exponentially distributed with mean 1. If the two machines work independently: 1) what is the probability that machine A completes...
A Brinell hardness tester is used to determine the hardness of 1/2" thick steel plate. The...
A Brinell hardness tester is used to determine the hardness of 1/2" thick steel plate. The specifications for the steel require that the steel have a tensile strength between 125 ksi and 150 ksi. A 3000 kg load is used for the test. A. Calculate the minimum and maximum Brinell hardness of the steel. B. If a hardness test reveals that the Brinell hardness of the steel plate is 260 BHN what is the diameter of the indention in the...
A manufacturer uses two machines to drill holes in pieces of sheet metal used in engine...
A manufacturer uses two machines to drill holes in pieces of sheet metal used in engine construction. The workers who attach the sheet metal to the engine become inspectors in that they reject sheets so poorly drilled that they cannot be attached. The production manager is interested in knowing whether one machine is produces more defective drillings than the other machine. As an experiment, employee mark the sheets so that the manager can determine which machine was used to drill...
What type of pumps are used in hydraulic combinaton systems? two-phase (two-step) or round pumps
What type of pumps are used in hydraulic combinaton systems? two-phase (two-step) or round pumps
Briefly describe methods used in recycling of Steel and Aluminum. Which product make use of such...
Briefly describe methods used in recycling of Steel and Aluminum. Which product make use of such recycled Aluminum and Steel.
Brooklyn Corporation manufactures DVDs. The machine that is used to make these DVDs is known to...
Brooklyn Corporation manufactures DVDs. The machine that is used to make these DVDs is known to produce 6% defective DVDs. The quality control inspector selects a sample of 100 DVDs every week and inspects them for being good or defective. If 7% or more of the DVDs in the sample are defective, the process is stopped and the machine is readjusted. What is the probability that based on a sample of 100 DVDs the process will be stopped to readjust...
You have purchased a machine costing ​$27 comma 00027,000. The machine will be used for two​...
You have purchased a machine costing ​$27 comma 00027,000. The machine will be used for two​ years, and at the end of this​ time, its salvage value is expected to be ​$12 comma 00012,000. The machine will be used 4 comma 0004,000 hours during the first year and 6 comma 0006,000 hours during the second year. The expected annual net savings will be ​$34 comma 00034,000 during the first year and ​$40 comma 00040,000 during the second year. If your...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT