On Evaluation and Comparison of Blast Loading Methods Used In Numerical Simulations
| Autor: | Vahdet Uçar, Atıl Erdik |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Blast loading
CONWEP Arbitrary Lagrangian Eulerian (ALE) method LS-DYNA Numerical simulation Mesh sensitivity Engineering Mechanical Patlama yükleri CONWEP Arbitrary Lagrangian Eulerian (ALE) yöntemi LS-DYNA Sayısal benzetim Çözüm ağı hassasiyeti 020303 mechanical engineering & transports Materials science 0203 mechanical engineering General Engineering 020101 civil engineering 02 engineering and technology Mühendislik Makine 0201 civil engineering |
| Zdroj: | Volume: 22, Issue: 5 1385-1391 Sakarya University Journal of Science |
| ISSN: | 2147-835X |
| Popis: | It is crucial to assess the dynamic behavior of structures exposed to blast loading in order to improve the integrity and survivability. Numerical simulations are widely used to predict the response of structures under blast loading. A commercial nonlinear finite element code, LS-DYNA provides three blast loading methods: Empirical blast modeling technique CONWEP, Arbitrary Lagrangian Eulerian technique (ALE), and hybrid CONWEP - ALE technique. In this study, an experimental testing of a flat plate subjected to blast loading is modeled using these three blast loading methods in LS-DYNA. Mesh resolution study of ALE formulation is conducted to determine the influence of element mesh size on predicting blast loading effects that is converted through fluid structure interaction algorithm from Eulerian to Lagrangian type of elements. It is drawn a comparison between peak pressures calculated in simulations and maximum dynamic deformation measured in the field test. Finally, the discussion and conclusion are provided. |
| Databáze: | OpenAIRE |
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