Structural Response of a Large Pressure Vessel to Dynamic Loading
This report presents a feasibility study on structural analysis of pressure-containing structures subject to external blast loads using finite element and volume simulation software. A basic understanding of the main factors influencing the results of such analyses was established in an earlier study. An extensive series of computations have now been performed and the results are presented and discussed in detail in this report. These involve a 3-D simulation of a large steel vessel of hypothetical design containing pressurised water and subject to an explosive blast from a charge located directly underneath the lower torispherical end. The top is closed by a flat lid arrangement. The properties of the explosive material, the air and water environments and the vessel steel were taken from the literature. For the latter, elastic-plastic material properties at 20°C have been considered. The vessel is located in a bunker and by using FSR boundary conditions the reflections of the pressure waves on the bunker walls are also considered. To provide a cross-check on the computational results, some simplified analyses were performed using engineering and empirical formulae to estimate the pressure loads need to produce yielding and failure of the vessel, as well as of the corresponding quantities of explosives that would be needed to produce sufficient shock wave pressures.
PAFFUMI Elena;
TAYLOR Nigel;
2008-09-18
European Commission
JRC46828
1018-5593,
EUR 23451 EN,
https://publications.jrc.ec.europa.eu/repository/handle/JRC46828,
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