3. Lap joints with multiple local bonds

3.1 Sizing principle

The dimensioning of multiple local overlap connections, generally obtained by resistance spot welding (21 according to ), does not in principle boil down to a stress calculation, but to that of the number of points required to transmit a given stress (shear stress in principle) over a given part thickness and joint length, knowing the ultimate strength (rupture) of a point, and taking into account the intervention of a safety coefficient in relation to the construction sector under consideration.

As the diameter of the...