Simulation Methodologies for the Numerical Analysis of High-Speed Dynamics Meshing and High-Performance Computing as Influencing Factors

摘要

By now, computers and software have spread into all fields of industry. 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. This paper presents a set of numerical simulations of ballistic tests, which analyze the effects of armor structures. The goal is to find an appropriate technique for simulating composite materials and thereby improve modern armor to meet current challenges. To have the correct material model available is not enough. In this work, the main simulation methodologies are compared to create a perfect model for different armor structures. The calculation should match ballistic trials and be used as the basis for further studies. 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.