Home // International Journal On Advances in Systems and Measurements, volume 9, numbers 3 and 4, 2016 // View article
Authors:
Arash Ramezani
Hendrik Rothe
Keywords: solver methologies; simulation models; meshing; high-performance computing; high-velocity impact; armor systems
Abstract:
By now, computers and software have spread into all fields of industry. The use of finite-difference and finite-element computer codes to solve problems involving fast, transient loading is commonplace. A large number of commercial codes exist and are applied to problems ranging from fairly low to extremely high damage levels. Therefore, extensive efforts are currently made in order to improve the safety by applying certain numerical solutions. For many engineering problems involving shock and impact, there is no single ideal numerical method that can reproduce the various aspects of a problem. An approach which combines different techniques in a single numerical analysis can provide the “best” solution in terms of accuracy and efficiency. But, what happens if code predictions do not correspond with reality? This paper discusses various factors related to the computational mesh that can lead to disagreement between computations and experience. Furthermore, the influence of high-performance computing is a main subject of this work. The goal is to find an appropriate technique for simulating composite materials and thereby improve modern armor to meet current challenges. Given the complexity of penetration processes, it is not surprising that the bulk of work in this area is experimental in nature. Terminal ballistic test techniques, aside from routine proof tests, vary mainly in the degree of instrumentation provided and hence the amount of data retrieved. Here, both the ballistic trials as well as the analytical methods will be discussed.
Pages: 142 to 153
Copyright: Copyright (c) to authors, 2016. Used with permission.
Publication date: December 31, 2016
Published in: journal
ISSN: 1942-261x