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  • Books  (7)
  • New York : Academic Press  (4)
  • Hanover, NH : Corps of Engineers, U.S. Army Cold Regions Research and Engineering Laboratory  (3)
  • English  (7)
  • Undetermined
  • 1975-1979  (2)
  • 1970-1974  (5)
  • 1930-1934
  • 1
    Series available for loan
    Series available for loan
    Hanover, NH : Corps of Engineers, U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-303
    In: Research report
    Description / Table of Contents: CONTENTS: Preface. - Notation. - 1.Introduction. - 1.1Definition and scope of problem. - 1.2 Theoretical background. - 1.3 Previous work on the single plate-grouser problem. - 1.4 Background of the present investigation. - 2.Theory of two-dimensional soil failure by a plate-grouser. - 2.1 Basic criteria and assumptions. - 2.2 Rupture zones and boundaries. - 2.3 Forces in the spiral and Rankine zones. - 2.4 Solution to forces of the equilibrium wedge abc when [Theta]c 〉 [Theta] 〉 (- [Epsilon] [equal to or greater] -[Beta]). - 2.5 Solution to the forces H and V. - 3. Observation of soil rupture patterns. - 3.1 General. - 3.2 Test equipment and photographic technique. - 3.3 Photographing failure patterns. - 3.4 Observation of the equilibrium wedge when [Theta]c 〉 [Theta] 〉 - [Epsilon]. - 3.5 Rupture patterns at [Theta] = 90°. - 4. Force measurements. - 4.1Test program. - 4.2 The plate-grouser test apparatus. - 4.3 The measurement of soil strength. - 4.4 Results of controlled [Theta] tests. - 5. Conclusions. - Literature cited. - Appendix A: Details of mathematical methods. - Appendix B: Computer program. - Appendix C: Examples of application. - Appendix D: Photographs of failure patterns. - Abstract.
    Description / Table of Contents: The most common example of the application of inclined loads to the soil is the plate-grouser. This consists of a strip footing with a vertical arm at one end. The most usual loading arrangement is one in which a fixed vertical load is applied and then the horizontal load is increased until failure occurs. A theory has been developed which will predict the maximum horizontal force, assuming that the soil is dense enough to be reasonably described by the Coulomb equation. The theory is based on slip line fields including wedges of soil that are not failing. These slip line fields vary systematically with the interface angle [Beta] and the angle of internal shearing resistance of the soil [Phi] and they are a function of the direction of motion of the interface [Theta]. A computer program is provided which will solve the problem directly if the direction of motion [Theta] is given. It will also solve the more practical situation described above by an iterative procedure. The postulated slip line fields have been shown to be correct by means of glass box photographs giving excellent agreement with the theory. The predictions of passive pressure have been verified by a series of force measurements on quite large grousers driven into saturated clay, dry sand and an intermediate loam.
    Type of Medium: Series available for loan
    Pages: vi, 93 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 303
    Language: English
    Branch Library: AWI Library
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  • 2
    Series available for loan
    Series available for loan
    Hanover, NH : Corps of Engineers, U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-298
    In: Research report
    Description / Table of Contents: CONTENTS: Preface. - Abstract. - I. Introduction. - II. A statistical theory of trafficability. - Statistical descriptions of trafficability. - Statistical modeling of trafficability. - Trafficability in a variable space with comparison to a fixed space. - III. Statistical description of sea ice. - Homogeneous, isotropic, and normal random function. - Upper bound of probability for finding an obstacle derived from two-point probability density function. - IV. Design criteria of a SEV derived from sea ice surface roughness. - Literature cited. - Appendix: Statistics of a variable space.
    Description / Table of Contents: Efforts were made to derive the design criteria of surface effect vehicles operated on arctic sea ice. Statistical theories were developed to describe trafficability of the vehicles and topography of the sea ice. By the use of actual sea ice surface profiles obtained by an aerial laser profiler, the usefulness of the present statistical method was demonstrated.
    Type of Medium: Series available for loan
    Pages: iii, 19 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 298
    Language: English
    Branch Library: AWI Library
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  • 3
    Series available for loan
    Series available for loan
    Hanover, NH : Corps of Engineers, U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-287
    In: Research report
    Description / Table of Contents: Hugoniot curves were generated from simultaneous measurements of shock and free-surface velocities, obtained from samples of frozen Fairbanks (Fox) silt, using the exploding wire technique. The abrupt change in slope of the Us-Up Hugoniot is indicative of a phase change. The shape of the P-V Hugoniot suggests that the transformation begins immediately but does not go to completion. This means that, although the pressure lies slightly above the Rayleigh line through the mixed phase region, the slope does not increase as rapidly as it would if the material had stayed in the initial phase.
    Description / Table of Contents: CONTENTS: Preface. - Conversion factors. - Introduction. - Test procedure. - Test results. - Discussion. - Literature cited. - Appendix A: Hugoniot data. - Abstract.
    Type of Medium: Series available for loan
    Pages: iv, 13 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 287
    Language: English
    Branch Library: AWI Library
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  • 4
    Unknown
    New York : Academic Press
    Keywords: DDC 629.8/312 ; LC QA402 ; System analysis
    Pages: Online-Ressource (xi, 221 pages)
    ISBN: 9780080955889
    Language: English
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  • 5
    Unknown
    New York : Academic Press
    Keywords: DDC 511/.6 ; LC QA164
    Pages: Online-Ressource (xii, 378 pages)
    ISBN: 9780120748501
    Language: English
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  • 6
    Keywords: DDC 621.38/0436 ; LC TK5102.5 ; Demodulation (Electronics) ; Nonparametric signal detection ; Statistical hypothesis testing
    Pages: Online-Ressource (xii, 241 pages)
    ISBN: 9780080956282
    Language: English
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  • 7
    Unknown
    New York : Academic Press
    Keywords: DDC 515/.75 ; LC QA431 ; Functional equations
    Pages: Online-Ressource (xix, 510 pages)
    Edition: 3. printing
    ISBN: 9780120437504
    Language: English
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