One of the modern industry trends is to be able to manufacture components of relatively small size using traditional or new technologies. Smaller components usually need special assembly techniques. New course of mechanical joining improvement is to develop process modification for decreased scale, i.e. micro-joining. The development of micro-joining: micro-self-piercing riveting (M-SPR) and micro-clinching (M-C), require designing special tooling and, in case of the M-SPR, the development of production technology of micro-rivets (M-rivets). Rivet production by forming produces certain distribution of stress/strain field within cross-section of a rivet, influencing the process of SPR joint formation in micro-joining. Stress/strain field obtained during rivet production is taken into account in numerical simulation of micro-riveting process. Initial assumption was to make joints with dimensions less than 1mm. Both, the process of preforms for M-rivets and forming of M-rivet are proposed and verified by either numerical and experimental analysis.Keywords: micro-extrusion, micro-joining, micro-rivets, numerical modeling
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