#TITLE_ALTERNATIVE#

• Main Author: SUTOWO (NIM : 13607001); Dosen Pembimbing : Prof. Dr. Ir. Ichsan Setya Putra, IBNU
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/15968
• Institution: Institut Teknologi Bandung

One of structural failures that happened the most is caused by cracks. While majority of crack analyses are for mode I, in the cases of cracks on thin plates, the mode III can be significant on the leading to final failure of tearing. In this final project, evaluation of mode III stress intensity factor (SIF) is carried out using method of modified virtual crack closure. The method is based on the principle of strain energy release rate. The required values of loads and displacements closed to the crack tip are obtained from the analysis of finite element models using Patran-Nastran 2005 software. Analyses using three dimensional solid elements are performed on two models i.e. configurations of tensile loaded plate with a center slant through crack and four point bending specimen with an edge slant through crack. Convergence study and validation are performed to ensure the definition of correct models. Distribution of mode III stress intensity factor along the plate thickness <br /> <br /> <br /> <br /> <br /> shows the increasing values from the middle towards the surface. The opposite trend occurs in the distribution of mode I stress intensity factor which is getting smaller by going from the middle to the surface. Looking at the distribution along the same direction shows the major influence of nodal loads. The results also show the significant effect of slant angle &#952; to the value of SIF. Comparing the result of current study with the calculation using J-integral shows a good agreement.