Question: An M30 3.5 ISO 8.8 bolt is used in a joint at recommended preload, and the joint is subject to a repeated tensile fatigue

An M30 × 3.5 ISO 8.8 bolt is used in a joint at recommended preload, and the joint is subject to a repeated tensile fatigue load of P = 65 kN per bolt. The joint constant is C = 0.28. Find the static load factors and the factor of safety guarding against a fatigue failure based on the Gerber fatigue criterion.

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