Mechanical Principles Factor of Safety Help?

[Chelsea Shaw]

Hi, I'm currently puzzled on a question as I don't have/know the equation required to find the answer. The question is as follows:-

Several sections of the structure are to be held together using bolts, determine the suitability of the proposed material given the following:
The material for the bolt shown in the angled joint has an ultimate tensile strength of 542MPa and a shear strength of 331MPa. The diameter of the bolt is 15mm, force applied is 14KN and the bolt is at a 70degree angle.
Identify the factor of safety in operation; showing all stages of the calculation.
Any help would be greatly appreciated.

 

[tech99]

Hi, I'm currently puzzled on a question as I don't have/know the equation required to find the answer. The question is as follows:-

Several sections of the structure are to be held together using bolts, determine the suitability of the proposed material given the following:
The material for the bolt shown in the angled joint has an ultimate tensile strength of 542MPa and a shear strength of 331MPa. The diameter of the bolt is 15mm, force applied is 14KN and the bolt is at a 70degree angle.
Identify the factor of safety in operation; showing all stages of the calculation.
Any help would be greatly appreciated.View attachment 92175

You have to find the actual loads on the bolt. Then you divide the ultimate strengths by the actual loads to obtain FoS.