Numerical Study of Angle of Shear Area on Specimen for The Three Split-Hopkinson Shear Bar Techniques

• Main Author: FEBRINAWARTA (NIM : 13114076), BURHAN
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/26171
• Institution: Institut Teknologi Bandung

<p align="justify"> <br /> <br /> The need of materials with certain characteristics increases with the times. So, information about material characteristics becomes important, such as characteristic when exposed impact loads. To know these characteristic required testing at high strain rate. One commonly used testin technique is Split-Hopkinson Pressure Bar (SHPB). SHPB itself has various methods: compression, tension, shear, torsional, and multiaxial. <br /> <br /> Split-Hopkinson Shear Bar (SHSB) is a SHPB modification for shear method. Until now, there are three SHSB testing techniques, such as hat-shaped, punch, and double-notch. However, there is no standard test that can be used for all SHPB techniques. Therefore, the aim of this research to determine the most optimum angle of shear area for each SHSB techniques and to determine the most optimum of the three techniques of SHSB by numerical analysis of finite element method using Abaqus/CAE®. <br /> <br /> Specimens on simulations using material T351-2024 Aluminium and constitutive material model Johnson-Cook with each specimen have different angle of shear area (between 15o until 75o). In conclusion, based on numerical simulation and analysis, the most optimum angle of shear area for the hat-shaped technique are 15o (exactly 15.26o), the punch technique is 35o (exactly 35.19o), and the double-notch technique is 25o (exactly 25.51o). So, the hat-shaped technique was chosen as the optimum SHSB technique. <br /> <p align="justify">