Experimental evaluation on mechanical properties of a riveted structure with electromagnetic riveting

摘要

Evaluation on mechanical properties of a riveted structure with electromagnetic riveting was performed experimentally in this work. The effect of rivet tail dimension on mechanical properties and microstructure evolution were investigated by controlling deformation. The possibility of substituting a riveted structure for a bolted structure was explored by the contrast analysis. Results showed that dislocation slip in the adiabatic shear band was a main deformation mechanism of rivet tail. The rivet tail dimension mainly determined pull-out strength and failure mode of the riveted structure, and the optimal height of rivet tail was 5 similar to 6 mm for this riveted structure. The maximum bearing loads of shear tests and pull-out tests were 23.3 and 35.0 kN, respectively. Both shear strength and pull-out strength of riveted structures exceeded that of bolted structures, where the bolt has similar tensile-loading capacity as the rivet shaft. In contrast to the bolted structure, the load-to-weight ratio values of the riveted structure for shear test and pull-out test were improved by 22.64 and 66.10 %, respectively.