Numerical and experimental analysis of riveted joints for aeronautical applications

Technology Centers\ud Home page > Publications > Technical papers\ud Numerical and experimetnal analysis of riveted joints for aeronautical applications\ud \ud André Ferrara Carunchio; Larissa Driemeier; Roberto Ramos Jr.; Rynaldo Zanotele Hemerly de Almeida; Willy Roger de Paula Mendonça\ud \ud Abstract:\ud \ud Riveted joints are widely used in many applications in industrial to create permanent unions between structural members. In some aspects, this kind of union has a superior performance when compared to other connections, like glued bond joints (which have lower mechanical and thermal resistances) and screwed joints (which may have an inferior performance to fatigue behavior). Nonetheless, due to their geometrical characteristics, stress concentrations inevitably occur, which contributes to fatigue crack initiation and, eventually, to a catastrophic failure. Today, the vast dissemination of finite element codes makes the numerical analysis of these joints much more expeditious. On the other hand, if not well conducted, FE analyses become expensive and laborious, besides generating results not always satisfactory. In this work, 3D numerical models of riveted joints produced according to aeronautic procedures and requirements were built, employing different parameter and strategies. The results were compared to experimental data, obtained from test machine transducers (force and displacement) and the use of strain-gages, with the purpose of comparing the models’ performance from the accuracy and computational cost point of views. Thus, the aim of this work is to determine the best procedure to conduct a FE analysis of a riveted joint, and which parameters must be considered to reach accurate and reliable results