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An as-wound helical compression spring, made of music wire, has a wire size of 0.092in, an outer diameter of 9/16in, a free length of 43/8in, 21 active coils, and both ends squared and ground. the spring is unpeened. this spring is to be assembled with a preload of 5lbf and will operate with maximum load of 35lbf during use.
(a) estimate the factor of safety guarding against fatigue failure using a torsional Gerber fatigue failure critirion with Zimmerli date.
(b) Repeat part (a) using the sines torsional fatigue critirion (stready stree component has no effect). with zimmerli data.
(c) repeat using a torsional Goodman failure critirion with zimmerli data. (d0 estimate the critirion frequency of th spring.
a heat pump with refrigerant 134-a as the working fluid is used to keep a space at 25c by absorbing heat from
The moment of inertia with respect to axis 1-1 of the scalene triangle shown in the figure is 90 ×103 mm4. Calculate its moment of inertia I2 with respect to axis 2-2.
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derive the equation for maximum deformation of a beam in 3 point bending following steps will be helpfula fully draw
What are the standard S.I. And English based units for reporting strain? What are the standard S.I. And English based units for reporting Youngs Modulus?
A piston-cylinder assembly contains 2 lbm of water, initially at 100 lbf/in.2 and 400o F. The water undergoes two processes in series: a constant pressure process followed by a constant volume process. At the end of the constant volume process, the t..
a pressure cooker closed tank contains water at 200 f with the liquid volume being 110 of the vapor volume. it is
Thirty percent of the jet passes through the slot. The rest splits symmetrically along the barrier. Calculate the horizontal force F needed to hold the barrier per unit thickness into the paper.
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