PHASE-FIELD FRACTURE MODELLING ON 2D UNIDIRECTIONAL FIBER-REINFORCED COMPOSITE UNDER TRANSVERSE LOADING FOR CRACK PREDICTION

• Main Author: Amanullah Darmawan, Hafizh
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/84810
• Institution: Institut Teknologi Bandung

Fiber reinforced composites (FRCs) are divided into three phases: fiber, matrix, and fiber-matrix interface. Upon receiving damage, the fiber within FRC will break. As it receives continuous loading, fatigue will occur, and damage will spread along the specimen. One of the damage modes that occur is crack propagation which happens when excess energy released during fiber break causes the crack to travel into the matrix phase. This study applies the phase-field fracture modelling code to understand the implementation method for crack propagation modelling on FRCs. The phase field code is broken down and understood in both its implementation and utilization. To use within Abaqus software, certain adjustments in the job input file is done to define the user-defined elements (UEL). Beforehand, a python code is used to automize the creation of the FRC’s model which contains abundant fibers. After the material properties, loading, and boundary conditions are set, the model is complete. The methodology within this paper proved effective in both creating the representative volume element (RVE) of the FRC and simulating the crack propagation through the phase-field code. A viable crack propagation simulation result is able to be produced after several convergency tests. Several preparation and study may need to be done to be better accommodated for using the phase-field modelling for all intents and purposes as the output database consumes a substantial storage space.