Issue 47

S.C. Li et alii, Frattura ed Integrità Strutturale, 47 (2019) 1-16; DOI: 10.3221/IGF-ESIS.47.01 9 , element tension ultimate stress 20 u MPa  = , strain under ultimate stress 5 1.3 10 u  − =  , and strain when fracture occurs 4 1 10 f  − =  . The model top and bottom are imposed with load increased by 2 KN in the negative y direction and positive y direction respectively. Figure 5 : Numerical calculation model of Brazil splitting After the first 2 KN load is imposed, no damage occurs inside the disk; each element is in the linear elastic stage; Fig. 5 shows the distribution of the stress inside the Brazilian disk. The results of comparison of distribution rules and theoretical results of stress distribution inside the disk in document [17] show that the simulated stress distribution rules basically agree well with the theoretical distribution. Simulated distribution Theoretical distribution yy  xx  xy  Figure 6 : Comparison between theoretical and numerical results of stress distribution in Brazil disc