- Tytuł:
- Numerical analysis of initial and boundary conditions influence on the crew of tracked vehicle and the ground
- Autorzy:
-
Barnat, W.
Panowicz, R.
Niezgoda, T.
Dybcio, P. - Powiązania:
- https://bibliotekanauki.pl/articles/243703.pdf
- Data publikacji:
- 2011
- Wydawca:
- Instytut Techniczny Wojsk Lotniczych
- Tematy:
-
hull design
tracked vehicle - Opis:
- The problem of vehicle's impact resistance is broadly discussed in many articles and standardizations concerning special structures. In this paper, the numerical analysis results of an armoured vehicle loaded with blast wave are presented. Effects of ground proximity such as wave reflection are also taken into account. What is more, the tracking system was also included in calculations. The ground was modelled using Mie-Grüneisen equation of state. In the research an ALE coupling algorithm was used to model interaction between fluid (Euler domain) and structure (Lagrange domain). Euler description is used for air and blast wave propagation modelling, whereas structure is described by Lagrange equations of mass, momentum and energy conservation. The ALE coupling algorithm is implemented in MSC Dytran software. The problem was solved using explicit integration of movement equations over time. The research showed that ground and wheels considerably affect the simulation results. The pressure impulse on the vehicle's bottom increased by 40 per cent compared to the model in which these effects were not considered. Furthermore, the quality of the results increased as the solution obtained is more physical. Proposed method is a useful tool in hull design process. As well as that, the method will be further developed to include more detailed model of the vehicle.
- Źródło:
-
Journal of KONES; 2011, 18, 1; 31-38
1231-4005
2354-0133 - Pojawia się w:
- Journal of KONES
- Dostawca treści:
- Biblioteka Nauki
Artykuł