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)

Answer 1

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The bod length imust be greaher than h A-34.3mm2 we Knouw n30 Fatm cool dlia 10-105mm 70 MPa Now shank Length 2- 》も 4- 286.3 MNIM dis Iide 001m

For Section (kow Corbon Steel) E3207 fa AGE 3 l 3268MN