Creep Theory For A Floating Ice Sheet
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Creep Theory For A Floating Ice Sheet
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Author : D. E. Nevel
language : en
Publisher:
Release Date : 1976
Creep Theory For A Floating Ice Sheet written by D. E. Nevel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Ice categories.
The problem investigated in this thesis is the prediction of the deflection and stresses in a floating ice sheet under loads which act over a long period of time. This problem is currently important for oil exploration offshore in the Arctic. A review of analytical methods for predicting the bearing capacity of an ice sheet is given. The problem is formulated by assuming the ice is isotropic with a constant Poisson's ratio. The shear modulus is assumed to obey a linear viscoelastic model. The specific model selected is a series of one Maxwell model and two Voigt models. One of the Voigt models has a negative spring constant which produces tertiary creep. The ice model exhibits a primary, secondary, and tertiary creep response, similar to that observed in uniaxial creep tests of ice. The material properties in the viscoelastic model may be a function of the vertical position in the ice sheet, but all these material properties must be proportional to the same function of position. Using the thin-plate theory for the floating ice sheet, the solution is obtained for the deflection and stresses in the ice sheet for primary, secondary, and tertiary creep regions. It is then shown that for a load that is not distributed over a large area, the time-dependent part of the deflection and stresses is relatively independent of the load's distribution. For the elastic case, the stress significantly depends upon the load's distribution. Results are given for the deflection and stresses as a function of time and distance from the load. The maximum deflection and stresses occur at the center of the load. At this point the deflection increases with time, while the stresses decrease; i.e., the stresses relax. (Author).
The Viscoelastic Deflection Of An Infinite Floating Ice Plate Subjected To A Circular Load
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Author : Shunsuke Takagi
language : en
Publisher:
Release Date : 1978
The Viscoelastic Deflection Of An Infinite Floating Ice Plate Subjected To A Circular Load written by Shunsuke Takagi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Numerical integration categories.
Physics And Mechanics Of Ice
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Author : P. Tryde
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Physics And Mechanics Of Ice written by P. Tryde and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
In the programme of the symposium was written: "The International Union of Theoretical and Applied Me chanics has taken the initiative to organize the sympo sium. As the name of IUTAM implies, the organization brings forward achievements within the field of theore tical mechanics for application in science and engineer ing. According to the rules of IUTAM that only invited persons can attend, all lecturers and participants have been ap pOinted by the members of the scientific committee. To facilitate contact among the attending persons, it has been decided to restrict the total number to 85 persons including the lecturers. Only one session is planned, making it possible for everybody to attend all lectures. Most scientists and engineers have realized that the knowledge attained by extensive basic research is essen tial in order to solve technological problems. In the process of acquiring this knowledge we often fail to un derstand that scientific progress is only achieved by two main principles: (1) By studying the scientific litera ture and applying or improving the theories in order to predict behaviour and forces correctly, or (2) by re jecting existing theories and developing new ways to cope with the problem, resulting in a more differenti ated and, hopefully, more exact theory. Ice seems to be a simple material, but it is in fact so complex and strange that it is only in the latest dec ades that we have come to know some of the natural laws governing its behaviour.
Theoretical Glaciology
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Author : K. Hutter
language : en
Publisher: Springer
Release Date : 2017-03-30
Theoretical Glaciology written by K. Hutter and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-30 with Science categories.
The purpose and scope of this book on theoretical glaciology is outlined in the Introduction. Its aim is to study the theoretical aspects of'ice mechanics' and the 'dynamics of ice masses in a geophysical environment. For the mature reader, the book can serve as an introduction to glaciology. How ever, this is not what I would regard as advisible. Glaciology is an inter disciplinary science in which many special scientific disciplines play their part, from descriptive geography to fairly abstract mathematics. Advance ment will evolve from a merger of two or more branches of scientific specialization. In the last 20 years, several researchers in different fields of glaciology have written books emphasizing the aspects of their specialities and I have listed some which are known to me at the end of the Introduction. When glancing through these books, one recognizes that the mathematical aspects of glaciology are generally glossed over and, to date, there seems to be nothing available which concentrates on these. Therefore, I have written this book in an effort to close the gap and no apologies are offered for the mathematical emphasis. Rather, I believe that this neglect has, to a certain extent, aggra vated progress in the modelling of glaciology problems.
Technical Report
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Author : Cold Regions Research and Engineering Laboratory (U.S.)
language : en
Publisher:
Release Date : 1978
Technical Report written by Cold Regions Research and Engineering Laboratory (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Frozen ground categories.
The Bearing Capacity Of Floating Ice Plates Subjected To Static Or Quasi Static Loads
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Author : Arnold D. Kerr
language : en
Publisher:
Release Date : 1975
The Bearing Capacity Of Floating Ice Plates Subjected To Static Or Quasi Static Loads written by Arnold D. Kerr and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Ice categories.
This report contains a critical survey of the literature on the bearing capacity of floating ice plates. It consists of a discussion of general questions, a critical survey of analytical attempts to determine the bearing capacity of floating ice plates, and a survey of field and laboratory tests on floating ice plates and their relation to the analytical results. The paper concludes with a systematic summary of the results, a discussion of observed shortcomings, and suggestions for needed investigations.
Ice Mechanics 1995
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Author : J. P. Dempsey
language : en
Publisher:
Release Date : 1995
Ice Mechanics 1995 written by J. P. Dempsey and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Science categories.
Crrel Technical Publications
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Author : Cold Regions Research and Engineering Laboratory (U.S.)
language : en
Publisher:
Release Date : 1981
Crrel Technical Publications written by Cold Regions Research and Engineering Laboratory (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Engineering categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1977
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 1977 with Aeronautics categories.
Bibliography Of Ice Properties And Forecasting Related To Transportation In Ice Covered Waters
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Author : P. E. Greisman
language : en
Publisher:
Release Date : 1980
Bibliography Of Ice Properties And Forecasting Related To Transportation In Ice Covered Waters written by P. E. Greisman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Ice categories.
Intended for those performing research in ice properties related to ships, particularly icebreaker operations. Areas covered include properties of lake, sea and river ice as they relate to mechanical behaviour, remote sensing and ice motions.