Question

3. An ISO M12x1.75 class-12.9 bolt is used to fasten three members as shown in Fig. Q3. Dimensions are in millimeters. The first member is cast iron, the second is low-carbon steel and the third is aluminum. The static loading safety factor is 2.5. Determine a) Total bolt length, threaded length and threaded length in the joint. (6 pts) b) Bolt and joint stiffness using a 30° cone. (14 pts) c) Preload for permanent connections. (5 pts) d) Maximum static load that the bolt can support. (5 pts) 25 2 10 30 Fig.Q3

Answer 1

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