An exact analysis method is presented for shells of revolution formed of closed box sections. A consistent shell theory is used to develop the differential equations of the shell which in turn are solved by the use of numerical integration. A new method is introduced to generate a symmetrical stiffness matrix from the numerically obtained exact displacement functions. While the exact solution is generated at all times, the highly developed finite element numerical techniques are shown to be immediately applicable.
Calculations are made to estimate, as a function of distance, the radiation dose levels which would occur during full capacity operation of the ArvW Pulse Reactor Assembly (APRA) scheduled for construction at Aberdeen Proving Ground, Maryland. Calculations of the neutron dose are de by two methods. The first calculation (Method A) is made by utilizing an experimentally determined effective dose mean free path, which probably includes the effect of ground scattering. The second calculation (Method B) is made by utilizing the result of a Monts Carlo calculation of neutron transmission in air. The results of this calculation indicate considerably higher dose levels than indicated by Method A. Experimental data are available which substantiate the result of Method A. The gum dose at distances of interest is found to be unimportant when considered in light of the uncertainty in the neutron dose.
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