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A class 8 . 8 , M 2 7 3 ISO bolt has rolled threads and is used to clamp two rigid members together so
A class M ISO bolt has rolled threads and is used to clamp two rigid
members together so that There is an external force fluctuating rapidly
between and The construction and precision of manufacture are such
that there is a possibility of slight bolt bending. Bolt material exhibits an
idealized elastic, perfectlyplastic stressstrain curve.
Answer the following two questions for the initial tension of regular value that a
mechanic would apply using a torque wrench, ie
a Make a forceversustime plot showing the fluctuating external load, bolt
force and clamping force.
b Analyze bolt failure. Consider both separation and eventual fatigue
failure. Provide safety factors when applicable.
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