If the pushrods described in Problem were installed with zero clearance with other parts of the valve mechanism at 25°C, compute the following:
(a) The clearance between parts at —40°C.
(b) The stress in the rod due to a temperature rise to 116°C.
Assume that mating parts are rigid.
Problem:
The pushrods that actuate the valves on a six-cylinder engine are AISI 1040 steel and are 625 mm long and 8.0 mm in diameter. Calculate the change in length of the rods if their temperature varies from =40°C to +116°C and the expansion is unrestrained.
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