Topic: Machine Design
Which of the following is FALSE for bolted joints?
- A. Bolted joints are preloaded to avoid vibration loosening
- B. Threads made by thread rolling are preferred over machined threads
- C. When external load is applied, a bigger percentage relieves flange compression and the rest increases bolt tension
- D. Bolted joints are designed such that bolt stiffness is higher than flange stiffness
Answer: D. Bolted joints are designed such that bolt stiffness is higher than flange stiffness
Explanation: For a preloaded bolted joint, it is desirable for the flange stiffness to be much higher than the bolt stiffness to minimize the increase in bolt tension under external load.