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As per Unwin’s formula, if t is the thickness of the plate in mm, what will be the nominal diameter of the rivet?

As per Unwin’s formula, if t is the thickness of the plate in mm, what will be the nominal diameter of the rivet? Correct Answer d = 6.04 <span class="math-tex">\(\sqrt t \)</span> 

Explanation:

  • Practically, after the rivet cooled down, it suffers a certain amount of shrinkage but for uniformity and ease in calculation we consider the rivet Hole to be completely filled by a rivet.
  • The stress distribution is considered uniform in rivet joints.
  • Plate friction is also neglected.

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To calculate the size of the rivet, Unwin’s formula is used.

⇒ d = 6.04√t,

Where, t is the thickness of the plate in mm and d is the nominal diameter of rivet in mm

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