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A Semi-Empirical Method of Ice Resistance Prediction in Level Ice
SNAME 11th International Conference and Exhibition on Performance of Ships and Structures in Ice, 2014We introduce a semi-empirical model that can determine a ship’s performance in level ice based on Lindqvist’s model and develop a simple model for calculating ice resistance. This model assumes that contact between the ship and the ice is a case of symmetrical collision, and two contact cases are considered.
Seong-Yeob Jeong +4 more
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Ice Resistance Without Ice: Simulation of Ship Resistance in Ice Fields
1977This paper deals with a series of six ice-breaking ship models with commercial hull forms, which have been systematically tested with the intention of gathering more information about resistance in ice. In contrast to conventional ice resistance tests, performed in real ice towing tanks and followed by complicated data regression, the tests discussed ...
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Ice-Tank Observations on Barge Resistance in Brash-Ice
SNAME 25th American Towing Tank Conference, 1998In many instances barges in ice-covered navigation channels must move through brash ice. The present paper presents ice-tank observations and data indicating the levels of resistance likely to be encountered by barges in brash ice. The ice-tank data are compared with a set of full-scale data obtained with barges moving through icecovered channels in ...
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Ship resistance in thick brash ice
Cold Regions Science and Technology, 1980Abstract The mechanical properties of thick brash ice are considered, with special emphasis on the friction angle ф for a linear Mohr-Coulomb failure criterion. The static equilibrium of a uniform brash layer is discussed, and the internal stresses are given for neutral, active, and passive stress states.
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Thermal shock resistance of plastic IC package
Journal of Applied Polymer Science, 1990AbstractDual‐in‐line packages (DIPs) were formed from epoxy molding compounds with various physical properties using a transfer molding machine. The compounds were prepared by changing kinds and amounts of additives and addition methods. The thermal shock test was carried out by the following procedures.
Yoshitsugu Kojima +4 more
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Transient Thermal Resistance Analysis for IC Packages
2019 20th International Conference on Electronic Packaging Technology(ICEPT), 2019The next-generation 5G mobile network causes handheld device will be linked to various things in life, such as wearable devices, electric vehicles, GPS, AR/VR, smart home system, IOT, etc. In the trend of lighter, thinner and more functions, it also suffers from several issues like high power consumption and overheating, and high performance and low ...
Hsin-En Chen +5 more
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Flow Resistance in Ice-Covered Alluvial Channels
Journal of Hydraulic Engineering, 1997This paper describes the influences of floating level ice covers on flow and bed-load transport in alluvial channels and proposes a semi-empirical procedure for calculating flow resistance in such channels. The procedure can be applied in conjunction with several existing methods for estimating flow resistance in alluvial channels under open-water ...
Brennan T. Smith, Robert Ettema
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On the edge-thermal resistance (ICs)
IEEE Micro, 1993Thermal characteristics of integrated circuits (ICs) have long been a major concern for both manufacturers and users of electronic products. An increase in junction temperature can adversely affect the long-term performance and operating life of an IC. Several variables affect junction temperature. The IC vendor controls some of these; the user and the
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Semi-empirical level ice resistance prediction methods
Ship Technology Research, 2017Ship performance in ice depends on numerous design aspects, such as ensuring adequate thrust, appropriate arrangement of the propellers, as well as a hull designed to reduce the resistance, in both ice and open water. All these efforts require ice resistance estimates.
Erceg, Sandro, Ehlers, Sören
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Model tests on ice-rubble size and ship resistance in ice rubble
Cold Regions Science and Technology, 1986Abstract Described here are the results of model tests on resistance to ship-hull motion through a thick layer of ice rubble; layer thickness was 45% of hull draft. The tests were aimed to elucidate the influences of ice-rubble size on ice-rubble resistance.
Robert Ettema +2 more
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