If the ratio of rivet hole to the pitch of rivet is 0.25, then the tearing efficiency of the joint is

Explanation:

Tearing Efficiency of a Riveted Joint

• Tearing efficiency of a riveted joint refers to the ratio of the strength of the joint in tearing to the strength of the uncut plate. It is a measure of how effectively the riveted joint resists tearing under a load compared to the original plate without rivet holes. This efficiency is an important factor in the design and analysis of riveted joints in engineering structures.

The tearing efficiency (η_t) is given by the formula:

η_t = (p - d) / p

Where:

• p = Pitch of the rivet, which is the distance between the centers of two consecutive rivet holes.
• d = Diameter of the rivet hole.

The formula indicates that the tearing efficiency depends on the ratio of the rivet hole diameter to the pitch of the rivet.

Calculation:

Given:

• Ratio of rivet hole diameter to pitch, d/p = 0.25

From the formula for tearing efficiency:

η_t = (p - d) / p

Substitute d = 0.25p into the equation:

η_t = (p - 0.25p) / p

Simplify:

η_t = (1 - 0.25)

η_t = 0.75