Question: For the flat spring shown below, with L = 65mm, t = 0.8 mm and b = 6 mm. The spring is made of

For the flat spring shown below, with L = 65mm, t = 0.8 mm and b = 6 mm. The spring is made of steel (E = 207 GPa; SUT = 1500 MPa). The part has been hot rolled and you want a reliability of 95%. The maximum operating temperature is 45 C. Radius 12.5 mm- Circular eccentric Eccentricity Cam -2.5 mm Center of rotation Total excursion of follower 5.0 mm Follower Bearing during one revolution (a) Cross section of spring (enlarged) Ejection of one ball Ymax = 8.0 mm Ymin =3.0 mm Flat spring- L (b) Ball feed device a. Find Fmax and Fmin using energy methods. (Assume the deflection given is at the place where the force is being applied) b. Find max and omin at the point of maximum stress. c. Find ea and em d. If a constant what would be the safety factor? em e. If a life of 104 cycles is desired, what is the new safety factor under the same condition as part d?

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