Academic Journal
Modeling fragmentation with new high order finite element technology and node splitting
| العنوان: | Modeling fragmentation with new high order finite element technology and node splitting |
|---|---|
| المؤلفون: | Olovsson Lars, Limido Jérôme, Lacome Jean-Luc, Hanssen Arve Grønsund, Petit Jacques |
| المصدر: | EPJ Web of Conferences, Vol 94, p 04050 (2015) |
| بيانات النشر: | EDP Sciences |
| سنة النشر: | 2015 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | Physics, QC1-999 |
| الوصف: | The modeling of fragmentation has historically been linked to the weapons industry where the main goal is to optimize a bomb or to design effective blast shields. Numerical modeling of fragmentation from dynamic loading has traditionally been modeled by legacy finite element solvers that rely on element erosion to model material failure. However this method results in the removal of too much material. This is not realistic as retaining the mass of the structure is critical to modeling the event correctly. We propose a new approach implemented in the IMPETUS AFEA SOLVER® based on the following: New High Order Finite Elements that can easily deal with very large deformations; Stochastic distribution of initial damage that allows for a non homogeneous distribution of fragments; and a Node Splitting Algorithm that allows for material fracture without element erosion that is mesh independent. The approach is evaluated for various materials and scenarios: -Titanium ring electromagnetic compression; Hard steel Taylor bar impact, Fused silica Taylor bar impact, Steel cylinder explosion, The results obtained from the simulations are representative of the failure mechanisms observed experimentally. The main benefit of this approach is good energy conservation (no loss of mass) and numerical robustness even in complex situations. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2100-014X |
| Relation: | http://dx.doi.org/10.1051/epjconf/20159404050; https://doaj.org/toc/2100-014X; https://doaj.org/article/4224ccb4001a4bcdaf18b3f6677d1a68 |
| DOI: | 10.1051/epjconf/20159404050 |
| الاتاحة: | https://doi.org/10.1051/epjconf/20159404050 https://doaj.org/article/4224ccb4001a4bcdaf18b3f6677d1a68 |
| رقم الانضمام: | edsbas.17BBE08C |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 2100014X |
|---|---|
| DOI: | 10.1051/epjconf/20159404050 |