Select an appropriate failure theory and determine the safety factor for infinit

ID: 1855168 • Letter: S

Question

Select an appropriate failure theory and determine the safety factor for infinite lifetime operation.

A 1.0 inch diameter bar of AISI 1020 CD steel with a 0.1 inch radius groove machined into it experiences a completely-reversing bending moment of 900 inch lbs. while rotating at a constant speed of 200 revolutions/minute. For 99% reliability and room temperature operation, select an appropriate failure theory and determine the safety factor(s) for infinite lifetime operation or the number of cycles to failure.

Explanation / Answer

Tresca's Yield Criteria is an appropriate theory of failure. Factor of safety can be determined by this criteria

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Select an appropriate failure theory and determine the safety factor for infinit

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