Results 41 to 50 of about 663,862 (352)

Motions Assessment Using a Time Domain Approach for a Research Ship in Antarctic Waters

Journal of Marine Science and Engineering, 2023
An approach combining frequency and time domain analysis is introduced in this study for ship motions assessment. The open-source NEMOH code is utilized to compute the excitation forces and the hydrodynamic coefficients, while heave and pitch motions ...
Silvia Pennino, Antonio Scamardella
doaj   +1 more source

Experimental investigation of wave-induced motions of an obliquely moving ship [PDF]

, 2008
The lateral drift appears due to the effects of wind forces and/or wave drifting forces for a ship sailing in actual sea. The effects of wind forces and / or wave drifting forces in views of lateral drift for ship moving with certain forward speed have ...
Adnan, Faizul Amri, Hironori, Yasukawa
core  

Online prediction of ship maneuvering motions based on adaptive weighted ensemble learning under dynamic changes

Engineering Applications of Computational Fluid Mechanics
Dynamic changes in ship maneuverability challenge the accuracy and effectiveness of ship maneuvering models. This paper proposes an online prediction method based on the adaptive weighted ensemble learning framework, which can adaptively update the model
Yaohui Yu, Hongbin Hao, Zihao Wang, Yan Peng, Shaorong Xie   +4 more
semanticscholar   +1 more source

Smart, Bio‐Inspired Polymers and Bio‐Based Molecules Modified by Zwitterionic Motifs to Design Next‐Generation Materials for Medical Applications

Advanced Functional Materials, EarlyView.
Bio‐based and (semi‐)synthetic zwitterion‐modified novel materials and fully synthetic next‐generation alternatives show the importance of material design for different biomedical applications. The zwitterionic character affects the physiochemical behavior of the material and deepens the understanding of chemical interaction mechanisms within the ...
Theresa M. Lutz, Jonas De Breuck, Sahar Salehi, Meike N. Leiske   +3 more
wiley   +1 more source

A comparison study of water impact and water exit models

International Journal of Naval Architecture and Ocean Engineering, 2014
: In problems of global hydroelastic ship response in severe seas including the whipping problem, we need to know the hydrodynamic forces acting on the ship hull during almost arbitrary ship motions.
Alexander Korobkin, Tatyana Khabakhpasheva, Sime Malenica, Yonghwan Kim   +3 more
doaj   +3 more sources

Research of Wind–Wave–Ship Coupled Effects on Ship Airwake and Helicopter Aerodynamic Characteristics

Journal of Marine Science and Engineering
The oceanic wind and waves, as well as the resultant ship motions, significantly impact the ship airwake and the operation of shipborne helicopters. A numerical method coupling wind, wave, ship and helicopter is developed using multiphase flow, in which ...
Kun Zong, Luyao Qi, Yongjie Shi, Wei Han, Shan Ma   +4 more
doaj   +1 more source

Multiple Twinning in Nacre and Aragonite

Advanced Functional Materials, EarlyView.
Electron backscatter diffraction map of a cluster of geologic aragonite, exhibiting single, double, and triple twins. The whole cluster is approximately 2 cm wide. Colors indicate crystal orientations, so that pixels where the a‐, b‐, and c‐axis is perpendicular to the image plane are green, red, and blue, respectively.
Connor A. Schmidt, William O. Nachlas, Bil Schneider, Xiaoming Mao, Eric Tambutté, Alexander A. Venn, Sylvie Tambutté, Pupa U. P. A. Gilbert   +7 more
wiley   +1 more source

Lattice Structures for Bone Replacement: The Intersection of Bone Biomechanics, Lattice Design, and Additive Manufacturing

Advanced Materials Technologies, EarlyView.
This review outlines how understanding bone's biology, hierarchical architecture, and mechanical anisotropy informs the design of lattice structures that replicate bone morphology and mechanical behavior. Additive manufacturing enables the fabrication of orthopedic implants that incorporate such structures using a range of engineering materials ...
Stylianos Kechagias, Maxwell J. Munford, Frederik C.H. Masure, Richard J. van Arkel, Reece N Oosterbeek   +4 more
wiley   +1 more source

CFD Investigation on Effect of Ship–Helicopter Coupling Motions on Aerodynamic Flow Field and Rotor Loads

Journal of Marine Science and Engineering
As critical assets for surveillance, reconnaissance, and transport, shipborne helicopters play an indispensable role in modern maritime operations. Ensuring the safety and stability of shipboard landings is therefore of paramount importance, particularly
Zhouyang Liu, Yang Liu, Yingnan Ma, Zhanyang Chen, Weidong Zhao   +4 more
doaj   +1 more source

Control of Ship Roll Motion [PDF]

, 2014
The undesirable effects of roll motion of ships (rocking about the longitudinal axis) became noticeable in the mid-nineteenth century when significant changes were introduced to the design of ships as a result of sails being replaced by steam engines and the arrangement being changed from broad to narrow hulls.
Perez, Tristan, Blanke, Mogens
openaire   +2 more sources