Results 81 to 90 of about 16,773 (290)

Enhancement of Performance of Semi-Submersible Behaviour on Heave Motion by Adding Heave Plates [PDF]

open access: yes, 2015
This paper presents the results from a study on the enhancement of the heave performance of a semi-submersible in deepwater by adding heave plates. Heave motion Response Amplitude Operators (RAO) of a conventional semi-submersibles is first obtained ...
Tzoong, Ho Min
core  

Linear Mechatronic Modeling of Rectangular Tank Sloshing Dynamics

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Sloshing dynamics in partially filled tanks can strongly influence system‐level behavior when fluid motion couples with rigid‐body dynamics. This paper presents a linear and acausal two‐dimensional sloshing model for rectangular tanks, based on the reformulation of established sloshing theory within a modular, multi‐domain modeling framework ...
Magnus Steinstø, Eilif Pedersen
wiley   +1 more source

An Elasto–Plastic Hydro–Mechanical Model for Analyzing the Swelling Behavior of Heterogeneous Clay–Sulfate Rocks

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Swelling of clay‐sulfate rocks is a concern in geotechnical engineering that can damage infrastructure. In the historic town of Staufen in southwest Germany, geothermal drilling into a swellable anhydrite‐bearing clay formation resulted in water inflow and subsequent swelling, triggering ground heave and damage to more than 250 houses.
Reza Mahmoudi Kouhi   +4 more
wiley   +1 more source

Research on zoning of soft rock large deformation considering state of ballastless track and train comprehensively based on FEM-MBD

open access: yesAlexandria Engineering Journal
Severe foundation heave arises during tunnel excavation and operation, especially in the soft rock sections, detrimentally impacting track service performance and train operational safety.
Shuai Ma   +5 more
doaj   +1 more source

The Burning Question: Frequencies of Tobacco Consumption in Postmedieval (16th–19th c. ce) England and the Netherlands

open access: yesInternational Journal of Osteoarchaeology, EarlyView.
ABSTRACT The frequency of tobacco use during the postmedieval period is widely underexplored; this has repercussions for our understanding of the intoxicant's health impacts during this time. Our study assesses the frequency rates of tobacco consumption in different social groups in England and the Netherlands, two countries in which tobacco use became
Anna M. Davies‐Barrett   +1 more
wiley   +1 more source

Method for Analysis of an Offshore Heave Compensator

open access: yesApplied Sciences, 2016
A heave compensation system consists of a drill string compensator (DSC) and an active heave compensator (AHC) cylinder, which together produce control force over an oil pressure system suitable for transmission of considerable power and compensating for
Gwi-Nam Kim   +5 more
doaj   +1 more source

Deformation, Creep, and Dynamics in Glassy Ionomers

open access: yesJournal of Polymer Science, EarlyView.
Ionic architecture tunes the inelastic deformation of glassy ionomers. Simulations show that ionic associations leave the small‐strain elastic baseline nearly unchanged, but strongly reinforce yielding, strain hardening, and creep resistance. Polyampholyte architectures suppress nonaffine mobility and stress‐induced fluidization most effectively by ...
Nazanin Sadeghi, Fardin Khabaz
wiley   +1 more source

heave v

open access: yes
heave vMany of these 'heave-up shanties' were old ballads or contemporary ones, and very often topical verses were made up on the spur of the moment.PRINTED ITEM DNE SupG. M. Story NOV.

core   +2 more sources

Heaving The Lead [PDF]

open access: yesJournal of Navigation, 2009
Inspired by Professor Kemp's historical article on the use of soundings in navigation, this contribution provides useful information on the use of leadlines in commercial fishing and the Royal Navy in the mid-20th Century.
openaire   +1 more source

Modeled Subsidence of Permafrost Terrain 2025–2050: North‐Central Alaska

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT A large fraction of the Alaska terrain is underlain by regolith that contains excess ice (ice that in volume exceeds the natural pore space). Possible loss of excess ice would lead to ground subsidence, which in turn would disturb and destabilize the ground surface.
Jaakko Putkonen   +8 more
wiley   +1 more source

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