Effects of geometric parameters on failure behavior in laminated composite plates with two parallel pin-loaded holes

The aim of this study is to investigate failure mode, failure load and bearing strength in a laminated woven glass-vinylester composite plate with two parallel circular holes which are subjected to traction forces by two parallel rigid pins. The behavior of pin loaded composite plates with various dimensions has been observed experimentally and numerically. The edge distance-to-hole diameter (E/D), the distance between two holes-to-hole diameter (M/D), and the distance from the upper or the lower edge of the specimen to the centre of hole-to-hole diameter (K/D) ratios were selected as parameters. The numerical study was performed by using finite element software, Lusas 13.6. Hashin failure criteria were used to obtain failure load and failure mode. The numerical and experimental results were compared and good agreement was obtained.