Numerical study on the interaction of the striker and incident bar in the Split-Hopkinson-Bar experiment

By Clara Baby Mangalath

Master's Thesis from the year 2019 in the subject Engineering - Civil Engineering, grade: 1.1, Dresden Technical University, course: Advanced Computational and Civil Engineering Structural Studies, language: English, abstract: Unlock the secrets of high-speed material behavior with this groundbreaking exploration into the Split-Hopkinson Pressure Bar (SHPB) experiment, a cornerstone of dynamic material characterization. Delve into the intricacies of this high strain rate testing technique, where conventional assumptions meet the harsh realities of experimental observation. This study meticulously dissects the SHPB methodology through advanced numerical modeling, offering a critical analysis of the discrepancies arising from simplified one-dimensional wave theory. Discover how factors often overlooked - such as Poisson's ratio, element size, and interfacial friction - exert a profound influence on the accuracy and reliability of SHPB results. Embark on a comprehensive parameter study, meticulously examining the impact of striker dimensions, material properties, and wave propagation phenomena on stress, strain, and kinetic energy within the system. Witness the validation of a sophisticated numerical model against experimental data, providing invaluable insights into the nuances of wave behavior and stress distribution. This research not only illuminates the limitations of rigid body assumptions but also charts a course for future investigations, paving the way for enhanced precision and a deeper understanding of material response under extreme conditions. Whether you're a seasoned researcher or an emerging engineer, this book provides the tools to refine your SHPB experiments and push the boundaries of material science. Explore the influence of various test parameters in high strain rate environments to understand the dynamic behavior of solids. Gain insights into numerical model validations and parameter studies of the Split-Hopkinson Pressure Bar. Understand the imp

• Format: Paperback
• Language: English
• ISBN: 3346004198
• ISBN13: 9783346004192
• Release Date: October 2019
• Publisher: Grin Verlag
• Length: 72 Pages
• Weight: 0.23 lbs.
• Dimensions: 0.2" x 5.8" x 8.3"