Results 51 to 60 of about 21,441 (307)
Orbits in a generalized two-body problem [PDF]
, 2003 The two-body problem is a well-known case of the general central force problem with an attractive, inverse square force. However, there are forms of spacecraft propulsion, such as solar sails and minimagnetospheric plasmapropulsion, which generate a ...
McInnes, C.R.
core
Advanced Engineering Materials, EarlyView.A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du +4 more
wiley +1 more source
From active stresses and forces to self-propulsion of droplets [PDF]
Journal of Fluid Mechanics, 2017 We study the self-propulsion of spherical droplets as simplified hydrodynamic models of swimming micro-organisms or artificial micro-swimmers. In contrast to approaches that start from active velocity fields produced by the system, we consider active interface tractions, body force densities and active stresses as the origin of autonomous swimming. For
R. Kree, P. S. Burada, A. Zippelius
openaire +4 more sources
Anisotropic active Brownian particle with a fluctuating propulsion force
Physical Review E, 2022 9 pages, 2 figures. LaTeX with RevTeX 4.2 style.
Jean-Luc Thiffeault, Jiajia Guo
openaire +3 more sources
Techno-environmental assessment of marine gas turbines for the propulsion of merchant ships [PDF]
, 2011 This research study seeks to evaluate the techno-economic and environmental implications of a variety of aero-derivative marine gas turbine cycles that have been modelled for the propulsion of different types of merchant ships.
Bonet, Mathias Usman
core
Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales
Advanced Engineering Materials, EarlyView.Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik +7 more
wiley +1 more source
IEEE Transactions on Neural Systems and Rehabilitation EngineeringThis study presents the development and preliminary validation of a novel system, called APEX (Adaptive Propulsion Enhancement eXperience), which aims to enhance gait propulsion in stroke survivors.
Seoung Hoon Park +3 more
doaj +1 more source
The Evaluation of the Damping Characteristics of a Hard Coating on Titanium
Shock and Vibration, 2007 Engine failures due to fatigue have cost the Air Force an estimated $400 million dollars per year over the past two decades. Damping treatments capable of reducing the internal stresses of fan and turbine blades to levels where fatigue is less ...
Christopher Blackwell +3 more
doaj +1 more source
Influence of Fin’s Material Capabilities on the Propulsion System of Biomimetic Underwater Vehicle
Polish Maritime Research, 2020 The technology of Autonomous Underwater Vehicles (AUVs) is developing in two main directions focusing on improving autonomy and improving construction, especially driving and power supply systems.
Piskur Pawel +3 more
doaj +1 more source
Generation of propulsive force via vertical undulations in snakes
Journal of Experimental Biology, 2021 ABSTRACT Lateral undulation is the most widespread mode of terrestrial vertebrate limbless locomotion, in which posteriorly propagating horizontal waves press against environmental asperities (e.g. grass, rocks) and generate propulsive reaction forces.
Derek J. Jurestovsky +2 more
openaire +2 more sources