Fracture Analysis of Single and Two Collinear Square hole Cracks in a plate under Tension using FEA Authors P.Shravan Kumar

The use of fracture mechanics technique in the assessment of performance and reliability of structure is on increase and the prediction of crack propagation in structure play important part. The finite element method is widely used for the evaluation of SIF for various types of crack configurations. Two different geometries were used on this finite element model in order, to analyse the reliability of this program on the crack propagation in linear elastic fracture mechanics. These geometries were namely; a rectangular plate with crack emanating from square-hole and two collinear square hole cracks. Where, both geometries are in tensile loading and under mode I conditions. Therefore, a displacement Extrapolation Technique (DET) was employed particularly, to predict the crack propagations directions and to, calculate the Stress Intensity Factors (SIFs). Furthermore, the mesh for the finite elements was the unstructured type; generated using the advancing front method. While, the quarter point singular elements were uniformly generated around the crack tip in the form of a rosette. Moreover, make a comparison between this current study with other relevant and published research study. Numerical study is very effective in analysing the single square and multiple square hole cracks for finding the SIFs and their normalization. It is found that a square hole has a shielding effect on crack(s) emanatin