Ricerc@Sapienza

Selective Laser Melting is a promising Additive Manufacturing technology that makes possible the fabrication of
complex metallic components up to the production of mechanisms in one technological operation without the
need for a subsequent assembly. In order to permit the one-step fabrication of the joints, a lot of issues must be
considered to preserve their functionalities. In this work some of these aspects are investigated in order to
provide a manufacturability map of non-assembly joints taking into account the clearance, the joint shape and
the building orientation.
The results show multiple behaviors mainly affected by the dropping effect which is dependent upon the local
stratification angle: a little inclination of the joint improves its functionality and widens the manufacturability
window that permit to fabricate a working joint. The clearance and joint shape have combined effects on the
torque necessary to move the joint.