1. Consider the railroad tracks that are joined together at their ends thru welding (to eliminate clacking sound of the wheel as it passes the joints) at 65.F. During summer, the temperature rises to 135.F. Find the compressive stress developed in the tracks during summer, if the coefficient of thermal expansion is 6.5x10/°F.

1. Consider the railroad tracks that are joined together at their ends thru welding (to eliminate clacking sound of the wheel as it passes the joints) at 65.F. During summer, the temperature rises to 135.F. Find the compressive stress developed in the tracks during summer, if the coefficient of thermal expansion is 6.5x10/°F.

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter9: Time, Temperature, And Mechanical Properties

Section: Chapter Questions

Problem 9.3P

See similar textbooks

Similar questions

The rigid, horizontal slab is attached to two identical copper rods. There is a gap ∆ = 0.18 mm between the middle bar, which is made of aluminum, and the slab. Neglecting the mass of the slab, calculate the stress in each rod when the temperature in the assembly is increased by 60 oC. Use the following data:
A plate 0.035mm distant from a fixed plate, moves at 80 cm/s and shear stress is 2 N/m2 to maintain this speed. Determine the fluid viscosity between the plates.
At 200C, there is a gap d = 0.2 mm between the lower endof the bronze bar and the rigid slab supported by twosteel bars as shown. Neglecting the mass of the slab,determine the stress in each rod when the temperatureassembly is increased to 1000C.
A steel rod, which is free to move, has a length of 200 mm and diameter of 20 mm at a temperature of 15°C. If the rod is heated uniformly to 115°C,determine the length and the diameter of this rod to the nearest micron at the new temperature if the linear coefficient of thermal expansion of steel is 12.5 * 10-6m/m/C. Is there a stress on the rod at 115°C?If the rod is snugly fitted against two immovable nonconducting walls at a temperature of 15°C and then heated uniformly to115°C, what is its length at 115°C? If the modulus of elasticity of steel is207 GPa, what is the stress induced in the bar? Is this stress tension or compression?
Two horizontal plates are parallel to one another and separated by an oil film (SAE 10 oil at 20 deg C, Table A.4) that is 1.0 mm thick. The upper plate moves to the right at 2.0 m/s. The bottom plate moves to the right at 6.0 m/s. What is the shear stress in N/m2 of the oil on the upper plate? Is the shear stress on the upper plate directed to the right or to the left?
A railroad track is laid at a temperature of 15 oF with gaps of 0.01 feet between the ends of the rails. The rails are 33 ft long. If they are prevented from buckling, what stress will result from a temperature of 110 oF? (k = 6.5 x 10-6 per oF)
A closed cylindrical tank containing a pressurized fluid has an inside diameter of 510 mm and a wall thickness of 10 mm. The tank is pressurized to 2.40 MPa. Determine the longitudinal stress in the wall of the tank.
An 8-mm thick steel tank has an outside diameter of 600 mm. It is subjected to an internal pressure of 2.40 MPa. Which of the following gives the circumferential stress in the tank? Which of the following gives the longitudinal stress in the tank? If the allowable design stress in the wall is 125 MPa, which of the following most nearly gives the maximum internal pressure in the tank?
A hollow steel tube with an inside diameter of 80 mm must carry an axialtensile load of 330 kN. Determine the smallest allowable outside diameter of the tubeif the working stress is 110 MN/m2:
a)Calculate the stress components acting on the inclined plane AB. b)Calculate prime stresses c)Calculate the maximum shear stress Shear stress = 60 Mpa
(A point load of 100 kN is acting at the ground surface. Find: A. Value of the increase in vertical stress 2meters below the ground. B. Value of the increase in vertical stress 4meters below the ground
A thin-walled steel tank has an outside diameter of 600mm and a length of 3m. It is subjected to an internal pressure of 2MPa.9. What is the minimum thickness of the tank if the allowable design stress is 75MPa?10. If the thickness of the tank is 8mm, determine the circumferential stress in the tank.