Procedures For Prediction Of Ground Shock Phenomena Based On One Dimensional Shock Propagation Considerations
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Procedures For Prediction Of Ground Shock Phenomena Based On One Dimensional Shock Propagation Considerations
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Author : James V. Zaccor
language : en
Publisher:
Release Date : 1967
Procedures For Prediction Of Ground Shock Phenomena Based On One Dimensional Shock Propagation Considerations written by James V. Zaccor and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Shock waves categories.
The report describes a definitive experimental study in which shock-induced square-wave pulses in soil were observed to give way to decaying pulse shapes, as in a gas shock tube, and rapid attenuation of peak stress occurred thereafter due to nonlinear propagation in the rarefaction. In the study three different duration pulses were applied to an 8-ft vertical column of granular material confined under boundary conditions leading to a stress-strain (Sigma - Epsilon) behavior described by d to the 2nd power Sigma/d Epsilon to the 2nd power> 0, i.e., a strain-hardening type of response. Applied stresses ranged from 50 to 500 psi. The report describes a simple modification to be applied to the prediction procedure described in the first report of this series in order to take into account, to a first approximation, the nonlinear propagation of unloading waves that occurs in real media because of nonlinear stress-strain behavior in the unloading branch. The procedure which predicts stress and motion histories based on the conservation laws, a measured constitutive relationship, and the applied pressure-time profile, is demonstrated by predicting the entire sequence of an experimentally observed square-wave pulse transformation into a decaying pulse. (Author).
Procedures For Prediction Of Ground Shock Phenomena Based On One Dimensional Shock Propagation Considerations
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Author : James V. Zaccor
language : en
Publisher:
Release Date : 1967
Procedures For Prediction Of Ground Shock Phenomena Based On One Dimensional Shock Propagation Considerations written by James V. Zaccor and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Shock waves categories.
The report demonstrates procedures for computing stress and motion histories in soil. Simplified geometries are employed. The procedures have application to analysis of nuclear weapon loadings. The methods are based on the conservation laws of mass and momentum and dynamic material properties in the form of propagation velocities characteristic of shock waves in the compacting medium and sound waves in the compacted medium. The procedures deal with soil models composed of all nonlinear loading branch forms for which stress-strain (sigma-epsilon) behavior is described by the relationship the 2nd derivative Sigma with respect to epsilon> 0 (strain-hardening type of response) and all linear unloading branch forms. Input data required consists of laboratory uniaxial (constrained) compression or wave-propagation test data and an applied pressure-time profile. The procedure has been validated by comparison with closed-form solutions and applied to analyze test data in the literature obtained from laboratory and field. Application of the procedure to other than one-dimensional problems is indicated (e.g., a HEST test is analyzed). (Author).
Procedures For Prediction Of Ground Shock Phenomena Based On One Dimensional Shock Propagation Considerations
DOWNLOAD
Author : James V. Zaccor
language : en
Publisher:
Release Date : 1967
Procedures For Prediction Of Ground Shock Phenomena Based On One Dimensional Shock Propagation Considerations written by James V. Zaccor and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Shock waves categories.
Structures To Resist The Effects Of Accidental Explosions
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Author :
language : en
Publisher:
Release Date : 1991
Structures To Resist The Effects Of Accidental Explosions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Blast effect categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1995
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.
Procedures For Prediction Of Ground Shock Phenomena Based On One Dimensional Shock Propagation Considerations
DOWNLOAD
Author : James V. Zaccor
language : en
Publisher:
Release Date : 1967
Procedures For Prediction Of Ground Shock Phenomena Based On One Dimensional Shock Propagation Considerations written by James V. Zaccor and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with categories.
The report demonstrates procedures for computing stress and motion histories in soil. Simplified geometries are employed. The procedures have application to analysis of nuclear weapon loadings. The methods are based on the conservation laws of mass and momentum and dynamic material properties in the form of propagation velocities characteristic of shock waves in the compacting medium and sound waves in the compacted medium. The procedures deal with soil models composed of all nonlinear loading branch forms for which stress-strain (sigma-epsilon) behavior is described by the relationship the 2nd derivative Sigma with respect to epsilon> 0 (strain-hardening type of response) and all linear unloading branch forms. Input data required consists of laboratory uniaxial (constrained) compression or wave-propagation test data and an applied pressure-time profile. The procedure has been validated by comparison with closed-form solutions and applied to analyze test data in the literature obtained from laboratory and field. Application of the procedure to other than one-dimensional problems is indicated (e.g., a HEST test is analyzed). (Author).
Government Reports Annual Index
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Author :
language : en
Publisher:
Release Date : 1991
Government Reports Annual Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Government reports announcements & index categories.
List Of Publications Of The U S Army Engineers Waterway Experiment Station
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Author : United States. Army. Corps of Engineers
language : en
Publisher:
Release Date : 1976
List Of Publications Of The U S Army Engineers Waterway Experiment Station written by United States. Army. Corps of Engineers and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with categories.
Government Wide Index To Federal Research Development Reports
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Author :
language : en
Publisher:
Release Date : 1968
Government Wide Index To Federal Research Development Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Science categories.
List Of Publications Of The U S Army Engineer Waterways Experiment Station
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Author : U.S. Army Engineer Waterways Experiment Station
language : en
Publisher:
Release Date : 1985
List Of Publications Of The U S Army Engineer Waterways Experiment Station written by U.S. Army Engineer Waterways Experiment Station and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Hydraulic engineering categories.