Issue 53

Q. Zheng et alii, Frattura ed Integrità Strutturale, 53 (2020) 141-151; DOI: 10.3221/IGF-ESIS.53.12 144 used in the model, which is divided by the method of sweeping the mesh that is refined at the riveting point. The total number of elements is 124993 and the total number of nodes is 153607. Figure 2: S-N Curve of the joints. Figure 3: Size of the self-piercing riveting specimen. Figure 4: Self-piercing riveting 3D model. Materials Density （ kg/m 3 ） Elastic Modulus （ MPa ） Poisson's ratio Sheet 5083 Aluminum 15 2.71 10 −  4 7 10  0.33 Rivet 36MnB4 15 7.87 10 −  5 2.09 10  0.28 Table 1: Material parameters. Fig. 6 shows the stress cloud diagram of the static simulation Von Mises. According to the stress cloud diagram, the most critical part of the riveting joint is the contact between the rivet leg and the plate, and the maximum stress is 283 MPa.