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While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as

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+1 vote
in Machine Kinematics by (38.0k points)
While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as

(a) both ends fixed

(b) both ends hinged

(c) one end fixed and other end hinged

(d) one end fixed and other end free.

This question was addressed to me in an interview for job.

My question is based upon Efficiency of Self Locking Screws in section Friction of Machine Kinematics

1 Answer

0 votes
by (106k points)
Right choice is (d) one end fixed and other end free.

The explanation is: For buckling failure, The screw is considered to be a strut with lower end fixed and load end free. For one end fixed and the other end free, C = 0.25.

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