Earth Motion and Stress Measurements, Project LN302 Operation Dial Pack
Earth Motion and Stress Measurements, Project LN302 Operation Dial Pack

Author: Donald W. Murrell

Publisher:

Published: 1974

Total Pages: 148

ISBN-13:

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The objectives of this study were to measure and to analyze the earth motions and stresses produced by the Dial Pack 500-ton TNT detonation. Particle acceleration, particle velocity, and soil stress gages were installed to measure the ground motions and stresses in the 1,500- to 50-psi predicted air-blast overpressure region (83 to 540 feet from ground zero) at depths below the ground surface of 1.5 to 30 feet. Time histories of all successful measurements are included in Appendixes A and B. Ground shock arrival time data indicated the occurrence of outrunning ground motion at the ground surface at a distance of about 600 feet from ground zero, or the 35-psi pressure level. (Modified author abstract).

Operation Dial Pack, Project LN305
Operation Dial Pack, Project LN305

Author: Donald W. Murrell

Publisher:

Published: 1973

Total Pages: 122

ISBN-13:

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The objective of this project was to measure and analyze ground shock in the outrunning region produced by the 500-ton Dial Pack detonation. Motions and stresses were measured at 645- and 840-foot ground ranges at depths of 1.5, 5, 10, and 20 feet. Thirty-one of thirty-two gages produced good records; time histories are included in Appendixes A and B, and frequency response spectra are presented in Appendix C. (Modified author abstract).

Effect of Constitutive Properties of Earth Media on Outrunning Ground Shock from Large Explosions
Effect of Constitutive Properties of Earth Media on Outrunning Ground Shock from Large Explosions

Author: Paul F. Hadala

Publisher:

Published: 1973

Total Pages: 484

ISBN-13:

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Outrunning ground shock data from the 100- to 10-psi overpressure decade in six large surface high explosive (HE) tests, three from a rock site and three from a glaciated soil site, were analyzed for the effect of gross changes in constitutive properties. Axisymmetric wave propagation code calculations in layered linear and nonlinear (incrementally elastic-plastic) media were performed to determine the effects of introducing nonlinearity, selected material property variations, and the relative importance of airblast and direct induced effects from surface explosions in the overpressure decade of interest.