Rivet Value:

Rivet value is a term used in the design of riveted joints. It is the minimum of the strength of rivet in shearing and the strength of the rivet in bearing.

Strength of Rivet in Shearing:

The strength of the rivet in shearing is the maximum force that can be applied to the rivet before it fails due to shear. It is given by the formula:

Ps = (0.5 * π * d^2 * τs)

where, Ps is the strength of the rivet in shearing, d is the diameter of the rivet, and τs is the shear strength of the rivet material.

Strength of Rivet in Bearing:

The strength of the rivet in bearing is the maximum force that can be applied to the rivet before it fails due to bearing. It is given by the formula:

Pb = (π * d * t * σb)

where, Pb is the strength of the rivet in bearing, t is the thickness of the plate, and σb is the bearing strength of the plate material.

Minimum of A and B:

The rivet value is calculated as the minimum of the strength of the rivet in shearing and the strength of the rivet in bearing. This is because the failure of the joint can occur due to either shearing or bearing failure. Therefore, the joint should be designed to withstand the minimum of the two failure modes.

Conclusion:

In conclusion, the rivet value is the minimum of the strength of the rivet in shearing and the strength of the rivet in bearing. This value is used in the design of riveted joints to ensure that the joint can withstand the maximum force that can be applied to it without failure.