Download or read book Creep of Floating Ice Sheets Computer Calculations written by D. H. Garbaccio and published by . This book was released on 1968 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using a digital computer calculations were made of the deformations and bending moments in a floating ice sheet. The ice behavior was described by a linear viscoelastic model consisting of a Maxwell and a Voigt element in series. Loading with circular symmetry uniformly distributed was applied to a plate of finite thickness described by Reissner theory. The effect of superposed loads describing aircraft landing gear was considered. Calculations were also made for a linearized approximation to the problem of a thin sheet described by a power creep law. The method was only partially successful because the time span of applicability was short. (Author).

Download or read book The Viscoelastic Deflection of an Infinite Floating Ice Plate Subjected to a Circular Load written by Shunsuke Takagi and published by . This book was released on 1978 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CREEP OF FLOATING ICE SHEET written by Donald H. Garbaccio and published by . This book was released on 1967 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theory was developed for a finite length line load on an elastic plate on elastic foundation. When the solution for a finite thickness plate failed to give convergent expressions for the bending moments under the load, the solution was reduced to the case of a thin plate for which a convergent solution was obtained. The correspondence principle was applied to obtain the linear viscoelastic problem. An approximate method of Laplace transform inversion was used to obtain the time dependent behavior of the creeping plate. Numerical results are presented. Theory was developed using the Hankel and Laplace transforms for a plate of finite thickness with circular symmetrical loading which was later reduced to a uniform load over a circular area. The solution is presented in a form where numerical calculations can easily be made with a digital computer. Owing to the complexity of the problem the nonlinear creep behavior of floating ice sheets was limited to a thin plate with circular symmmetry deforming with a power creep law. No numerical results were obtained but a suggested method of solution is outlined. (Author).

Download or read book Technical Report written by Cold Regions Research and Engineering Laboratory (U.S.) and published by . This book was released on 1978 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Creep Theory for a Floating Ice Sheet written by D. E. Nevel and published by . This book was released on 1976 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1985 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guide to Technical Documents written by Naval Civil Engineering Laboratory (Port Hueneme, Calif.) and published by . This book was released on 1974 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transactions of the Conference of Army Mathematicians written by and published by . This book was released on 1977 with total page 1314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and published by . This book was released on 1967 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Journal of Glaciology written by and published by . This book was released on 1979 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ice Engineering in Small Craft Marinas written by John P. Zarling and published by . This book was released on 1974 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book SIPRE Report written by and published by . This book was released on with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oceanography written by Defense Documentation Center (U.S.) and published by . This book was released on 1969 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sea Grant Advisory Report written by and published by . This book was released on with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Ice Properties and Forecasting Related to Transportation in Ice covered Waters written by P. E. Greisman and published by . This book was released on 1980 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book On the Mechanics of Floating Ice Sheets written by Kolumban Hutter and published by . This book was released on 1978 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cold Regions Engineering written by William L. Ryan and published by . This book was released on 1986 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conference papers dealing with engineering problems encountered in cold-region. Sessions were: foundations, transportation, ice movement, work pads/snow roads, drill pads, geotechnical/instrumentation, gravel islands, structures, research/permafrost detection, Eklutna water project, wastewater treatment, hydrotechnical, environmental/utilities, mining/landfills, ice, insulation, hydrotechnical/regulations.