Parametric analysis of weld toe stress concentration in longitudinal attachments

Synopsis: A parametric FEM study was undertaken in order to evaluate the influence of the main geometric parameters on the weld toe stress concentration in longitudinal attachments.

The numerical model was prepared on the basis of the results of a number of experimental tests. A simple formula is proposed for determining the stress intensity factor for these types of joint as a function of the main geometrical parameters.

Based on the proposed formula, the influence of these parameters on the fatigue life of such joints is evaluated and discussed.