1. initial tension
2. external load applied
3. relative elastic yielding(springiness) of the bolt and the connected member
4. all the above
all the above
1. is just sufficient to hold parts together
2. approaches yield point
3. is 50% of yield point
4. is about yield point divided by safety factor
approaches yield point
1. joint may not open up
2. bolts are weakest elements
3. the resultant load on the bolt would not be affected by the external cyclic load
4. bolts will not loosen during service
the resultant load on the bolt would not be affected by the external cyclic load
1. square
2. acme
3. buttress
4. BSW
buttress
1. shank
2. head
3. in the middle
4. at the thread
at the thread
1. 2.4 m above the hydraulic gradient
2. 6.4 m above the hydraulic gradient
3. 10.0 m above the hydraulic gradient
4. 5.0 m above the hydraulic gradient
6.4 m above the hydraulic gradient
1. tightening it properly
2. increasing shank diameter
3. grinding the shank
4. making shank diameter equal to core diameter of thread
making shank diameter equal to core diameter of thread
1. one smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
2. a slot is cut partly is middle of nut and then slot reduced by tightening a screw
3. a hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip
4. through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin spitted and bent in reverse direction at other end
through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin spitted and bent in reverse direction at other end
1. ability to undergo large permanent deformations in compression
2. ability to recover its original form
3. ability to undergo large permanent deformations in tension
4. all of the above
ability to undergo large permanent deformations in tension
1. ability to undergo large permanent deformations in compression
2. ability to recover its original form
3. ability to undergo large permanent deformations in tension
4. all of the above
ability to undergo large permanent deformations in compression