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Flexural Strength Of Sea Ice _ THE MECHANICAL PROPERTIES OF SEA ICE

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Download scientific diagram | Flexural strength versus the square root of the brine volume for first-year sea ice. from publication: Ice Decay and the Ice Regime System. | The Canadian Ice Regime Definition Flexural strength of sea ice is the maximum bending stress that the sea-ice material can take. This definition is drawn from the traditional material mechanics. Once the sea-ice strength is surpassed, the failure and fracture of sea-ice plate are followed. The flexural strength is closely connected with many natural phenomenon and engineering properties of In this paper, statistics of ice thickness and ice strength of first-year sea ice along the Northern Sea Route (NSR) is studied to provide useful information for the design and operation of Arctic ships. Specifically, ice thickness, ice strength and other physical parameters of the sea ice are estimated. Four representative sites are selected to study the ice environment

TC - Flexural and compressive strength of the landfast sea ice in the ...

Experimental study on flexural strength and effective elastic modulus of granular ice in the Bohai Sea, China A total of 25 flexural and 55 uniaxial compressive strength tests were conducted using landfast sea ice samples collected in the Prydz Bay. Three-point bending tests were performed at ice

The flexural strength of ice depends on a large number of factors, such as temperature, salinity, granular structure, as well as the test method and sample size used for measurements. Usually, researchers have attempted to relate the flexural strength of sea ice to the percentage volume of liquid brine in the ice [14]. (The percentage volume of liquid brine in Abstract: The flexural strength of sea ice is a key parameter in determining the ice load on offshore structures. A series of field and indoor physical tests have been carried out and the relationship between the sea ice flexural strength and sea ice parameters, such as ice temperature, salinity and sample size, has been obtained. Experimental Studies on Elastic Modulus and Flexural Strength of Sea Ice in the Bohai Sea | PDF or Rent in Article Galaxy

THE MECHANICAL PROPERTIES OF SEA ICE

Several reliable formulae have been proposed between brine volume fraction or total porosity of sea ice and its mechanical parameters, such as tensile strength (Timco and Weeks 2010), shear strength (Frederking and Timco 1986), uniaxial compressive strength (Timco and Frederking 1990), and flexural strength (Timco and O’Brien 1994). The Young’s modulus determines critical bending deformation when maximal tensile stress equals the flexural strength. Elastic moduli of ice influence dispersion and amplitudes of flexural-gravity waves penetrating below the ice from ice-free ocean regions (Fox and Squire, 1994).

Ähnliche Objekte (12) Flexural and compressive strength of the landfast sea ice in the Prydz Bay, East Antarctic Effect of E-glass fibers addition on compressive strength, flexural strength, hardness, and solubility of glass ionomer based cement The compressive strength of crumpled matter Investigating the flexural strength of recycled cast glass 2.1 Definition of Sea Ice Mechanical Properties The mechanical properties of sea ice primarily include compressive strength, flexural strength, Both the uniaxial compressive strength and flexural strength of sea ice are related to the microparameters in DEM simulation including particle size, sample size, bonding strength, and interparticle friction coefficient.

series of mid-winter experiments were carneed out on the ice in the rubble field around Tarsiut Island in the Beaufort Sea. The tests included grain structure deteminations, salinity and density of the ice, small beam flexural strength and fracture toughness. Qpical values for flexural strength and fracture toughness were 0.6-1.0 MPa and 100-140 kPa m1I2 respectively. Both properties DEM simulation of uniaxial compressive and flexural strength of sea ice: parametric study, Journal of Engineering Mechanics, 143 (1), C4016010. Article Google Scholar

  • The tensile strength of first-year sea ice
  • Physical Properties of Sea Ice
  • Scale Effect in Ice Flexural Strength
  • Review Mechanical properties of ice and snow

A drop off in compressive strength was shown with increasing sea ice porosity. Consequently, a model was developed to depict the combined effects of porosity and strain rate on compressive strength in both ductile and brittle regimes. The mechanical strength of mixed ice was lower than congelation ice, and that of snow ice was much weaker. Flexural Strength of Ice Reconstructed from Field Tests with Cantilever Beams and Laboratory Tests with Beams and Disks More than 60 in-situ tests have been performed since 2010 to determine flexural strength of sea ice and freshwater ice in North-West Barents Sea, Spitsbergen Fjords, and fresh water lake near Longyearbyen in The mechanical properties of ice and snow are reviewed. The tensile strength of ice varies from 0.7–3.1 MPa and the compressive strength varies from 5–25 MPa over the temperature range −10°C to −20°C. The ice compressive strength increases with decreasing temperature and increasing strain rate, but ice tensile strength is relatively insensitive to these variables. The

This paper deals with measurements of the elastic modulus and the flexural strength of sea ice collected at nine sites in the Bohai Sea in the two consecutive winters of 2008–2010. Experimental results show that both elastic modulus and flexural strength Abstract: This paper deals with measurements of the elastic modulus and the flexural strength of sea ice collected at nine sites in the Bohai Sea in the two consecutive winters of 2008–2010. Based on the analysis and generalization of the long-term field dataset on the sea ice strength characteristics, the simple universal formula was derived for calculating the mean flexural and uniaxial compressive strength of ice.

Flexural strength of freshwater and saline ice at −10°C as a function ...

Using sea ice test data from the Bohai Sea, as well as empirical formulas and optimized RNN, BPNN, and GA-BPNN methods, nonlinear analyses are performed in this study to investigate the effects of multiple parameters on the flexural and uniaxial compression strengths of Ice flexural strength is an important parameter in the assessment of ice loads on the hulls of ice-class ships, sloped offshore structures, and sloped bridge piers. While scale effects in compressive ice strength are well known, there has been debate as to the extent of scale effects in ice flexural strength. To investigate scale effects during flexural failure of both Tests of uniaxial compression strength of columnar sea ice were conducted in the field on Svalbard, Norway. Salinity, density and temperature of each

This article aims at answering the question of how the flexural strength of level ice depends on the season and region of the Arctic, and on how this variation influences the ice performance of a ship. The present paper describes the results of a rather long series of full-scale, flexural-strength tests on ice beams (over 70 tests) performed in-situ in seawater and freshwater ice at and near Svalbard archipelago during the period 2010-2018. Ice The measured flexural strengths of freshwater ice and sea ice have been compiled with a view towards correlating the measured results. Two thousand, four hundred and ninety-five experimentally measured data points from nineteen investigators have been used. This correlation has been done as input for a new system being developed to quickly characterize sea ice

Problems for which the tensile strength is important are usually associated with the vertical deflection of ice covers, and so the property of interest is the flexural strength for the biaxial stress condition associated with the bending of plates. We analyzed the relation between the full-scale flexural strength of the ice cover as determined by the results of the cantilever tests, and the strength corresponding to the tests of small specimens. Flexural strength and fracture toughness of sea ice From National Research Council Canada

Abstract. The flexural strength of ice surfaces bonded by freezing, termed freeze bond, was studied by performing four-point bending tests of bonded freshwater

This review deals with properties of sea ice that are relevant to mechanical behavior on a fairly small scale. The main concern is with polycrystalline ice that is more or less intact. This sets the lower limit of scale not far below 0.1 m, and the upper limit around This paper deals with measurements of the elastic modulus and the flexural strength of sea ice collected at nine sites in the Bohai Sea in the two consecutive winters of 2008–2010. All ofthese factors make the un-have been several brine volume-flexural strength derstanding and characterization of sea ice dif-relationships derived for sea ice.