how is load capacity of a bolt affected if loaded in compression

Oct 18, 2004 2 Replies

If a bolt is used to push a load (loaded in compression) rather than clamp an assembly (loaded in tension) is it safe to say that the force exerted would be similar to the clamp load normally expected for a similar applied torque? In case the question is not clear, imagine a screw jack.



Jon Juhlin


Dear Jon Juhlin:

The force is similar, the strength of the "column" is not. Think Euler buckling.

David A. Smith

Strength is the same for tension and compression. For stability, i.e. buckling, can come into play for intermediate to long columns.

But with most bolted joints, the bolt never sees compression. The other joint members carry that.

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