Failure analysis of composite laminates containing three pin loaded holes

The aim of this investigation is to study the effect of different geometries on the failure behavior of glass-epoxy laminated composite plate which is subjected to a traction force by 3 rigid pins. The behavior of multi-pin loaded composite plates which have the stacking sequence of [0/90/±45]S and approx. 60% fiber volume fraction has been observed experimentally and numerically. 45 different geometries are used in this study by using 3 different hole distance parameters (The ratio of `edge distance? to `hole / pin diameter? E/D:1, 2, 3, 4, 5 ; The ratio of `Longitudinal hole distance? to `hole / pin diameter? F/D:2, 4, 6 ; The ratio of `Transverse hole distance? to `hole / pin diameter? G/D:3, 4, 5) The three-dimensional finite element method was used to obtain stress distribution of the material. For analyzes, LUSAS 13.6 finite element analyze software has been used.. During the study geometric non-linear behavior and ?Hashin Failure Criteria? have been selected to determine the ?Failure Mode? and the ?Failure Load?. The results of numerical and experimental study have been plotted and compared with each other.