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Theoretical Air Blast Loading Estimates on the M-X Shelter, the Influence of Dust, and a Recommended Experimental Program.

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Final rept. 8 Nov 76-31 Mar 78,

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This report discusses three activities performed in support of the M-X concept validation program, each specifically addressing various aspects of air blast loading on the M-X above-ground shelter concept. The three activities were 1 estimation of air blast loads on the M-X shelter 2 modeling the pre- and post-shock dust lofting for air blast calculations and 3 shock tube test planning for air blast loads measurements on a small scale model of M-X shelter. The first activity involved the generation of engineering estimates of the air blast loading on two orientations end-on and side-on of the M-X shelter for ultimate use by others for setting up structural response code calculations. Both ideal and precursed waveforms were considered. The second activity involved a review of the nuclear data base to identify data useful to understanding the relative importance of lofted dust in the flow on air blast loading. Also theoretical models used for late-time dust lofting were reviewed to determine their utility of the air blast problem. A recommended model was developed for future inclusion into a hydrodynamic code, HULL. The third activity involved a review of shock tubes in the United States that would be appropriate for use in measuring the air blast loads on a small model of the M-X shelter. The CERF shock tube was chosen and an experimental program was planned. Author

Subject Categories:

  • Structural Engineering and Building Technology
  • Guided Missile Launching and Basing Support

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