The present study is aimed to evaluate, by means of FEA, stresses and strains induced by thermal and pressure shock produced by rocket launch on the structures nearby SCLAR H system, installed on MMI’s NUM. Preliminarly, in order to check the suitability of the numerical approach, for simple problems, a comparison was made between the heat transfer computed results and those obtained by analytical solutions, referring to transient heat conduction through a thin plate and through a semi-infinite solid. Afterwards, the thermal analysis was performed by imposing on the exposed structures a surface temperature distribution experimentally known: the temperature through the thickness was determined. Then, by means of a structural analysis, the thermal stresses, induced by the distribution numerically obtained by the previous computation, have been calculated. As far as the pressure loads are concerned, adopting the peak values registered on the plates positioned next to the heat wave, a time/space dependent pressure mapping was evaluated. The computations were performed by means of the software MSC/Patran and MCS/Nastran.
Naval Ship Structures Exposed to Rocket Thermal and Pressure Loads
MASCIA, DONATELLA;
2009-01-01
Abstract
The present study is aimed to evaluate, by means of FEA, stresses and strains induced by thermal and pressure shock produced by rocket launch on the structures nearby SCLAR H system, installed on MMI’s NUM. Preliminarly, in order to check the suitability of the numerical approach, for simple problems, a comparison was made between the heat transfer computed results and those obtained by analytical solutions, referring to transient heat conduction through a thin plate and through a semi-infinite solid. Afterwards, the thermal analysis was performed by imposing on the exposed structures a surface temperature distribution experimentally known: the temperature through the thickness was determined. Then, by means of a structural analysis, the thermal stresses, induced by the distribution numerically obtained by the previous computation, have been calculated. As far as the pressure loads are concerned, adopting the peak values registered on the plates positioned next to the heat wave, a time/space dependent pressure mapping was evaluated. The computations were performed by means of the software MSC/Patran and MCS/Nastran.
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