Results 51 to 60 of about 853,227 (291)

PHYSICAL AND MATHEMATICAL FOUNDATIONS OF MEASUREMENTS IN NONLINEAR DYNAMIC SYSTEMS [PDF]

Telecommunications and Radio Engineering, 2018
Physical and mathematical bases of measurements in physical non-linear dynamical systems are formulated. Physical properties, common to different systems, include: interval physical values; different modes of dynamics (including chaotic); strong dependence on the initial conditions; exposure to noise.
Machekhin, Yu. P., Kurskoy, Yu. S., Gnatenko, A. S.   +2 more
openaire   +1 more source

A Case‐Based Reasoning Approach to Model Manufacturing Constraints for Impact Extrusion

Advanced Engineering Materials, EarlyView.
A hybrid modeling approach is presented that combines constraint‐based process modeling and case‐based reasoning. The model formalizes manufacturing constraints and integrates simulation data to model complex manufacturing processes. The approach supports manufacturability analysis during product design through an adaptive modeling environment.
Kevin Herrmann, Eduard Ortlieb, Hendrik Wester, Paul Christoph Gembarski, Bernd‐Arno Behrens, Roland Lachmayer   +5 more
wiley   +1 more source

Simulation of Inhomogeneous Refractive Index Fields Induced by Hot Tailored Forming Components

Advanced Engineering Materials, EarlyView.
This article presents a simulation model for simulating inhomogeneous refractive index fields (IRIF) in hot‐forged components, accounting for thermal influences and complex geometries. Through this simulation, a priori knowledge about the propagation of the IRIF can be obtained, allowing for the positioning of the component or an optical measurement ...
Pascal Kern, Lennart Hinz, Markus Kästner, Eduard Reithmeier   +3 more
wiley   +1 more source

A Mathematical Modeling In Computer Algebra Systems (CAS) As A Base For A Development of The Mathematics Education [PDF]

arXiv, 2014
Information technologies for studying physical-mathematical disciplines on base of mathematical modeling in the computer algebra system Maple are described.
arxiv  

Dynamic mathematical model of the lubrication system

Journal of Dynamics and Vibroacoustics, 2014
The object of research is the lubrication system with supply and scavenges oil gear pumps with electric drives. Analyzed the features of the workflow in aggregates lubrication systems, and evaluated the possibility of applying a homogeneous model for the description of a two-phase mixture of "oil foam".
Yuri. M. Shchurovskiy, Anatoly I. Gulienko   +1 more
openaire   +2 more sources

Laser Additive Manufacturing of Oxide‐Dispersion‐Strengthened Steels: A Simulation‐Based Comparison Between Powder Bed Fusion and Direct Energy Deposition

Advanced Engineering Materials, EarlyView.
Controlling the size and distribution of dispersoids is essential for optimizing the performance of oxide‐dispersion‐strengthened steels. This study focuses on nanoparticle dispersion and agglomeration during laser additive manufacturing of Fe20Cr alloy reinforced with ZrO 2 nanoparticles. Utilizing multiphysics phase‐field simulations and nanoparticle
Somnath Bharech, Yangyiwei Yang, Timileyin David Oyedeji, Prasanth Bondi, Mareen Goßling, Bilal Gökce, Bai‐Xiang Xu   +6 more
wiley   +1 more source

Shape Memory Polymer‐Based Hook‐and‐Loop Fastener for Robust Bonding and on‐Demand Easy Separation

Advanced Engineering Materials, EarlyView.
A 3D shape memory polymer‐based hook‐and‐loop fastener, fabricated using projection microstereolithography and molding, offers tunable bonding strength through temperature control. When heated from 25 to 70 °C, the fastener softens and deforms easily, reducing bonding strength by 20‐fold for on‐demand easy separation.
Chen Yang, Yueping Wang, Hyunggyu Kim, Paul Wang, Daehoon Han, Howon Lee   +5 more
wiley   +1 more source

On a pair of difference equations for the $_4F_3$ type orthogonal polynomials and related exactly-solvable quantum systems

, 2014
We introduce a pair of novel difference equations, whose solutions are expressed in terms of Racah or Wilson polynomials depending on the nature of the finite-difference step.
A.U. Klimyk, E.I. Jafarov, E.I. Jafarov, E.P. Wigner, L. Landau, N.I. Stoilova, R. Koekoek, W. Groenevelt, Y. Ohnuki   +8 more
core   +1 more source

Real‐Time Characterization of Polypropylene Jet Dynamics in Melt Electrospinning Using Laser Diffraction and Image Analysis

Advanced Engineering Materials, EarlyView.
This study uses real‐time laser diffraction image analysis to quantify fiber diameter changes and whipping behavior from the nozzle to the collector under varying electric field conditions. By capturing diffraction (scattering) intensity changes and bending angles, melt jet and whipping behavior are accurately assessed, supporting melt electrospinning ...
Jihwan Lim, Eunji Moon, Minseo Kim, Han Seong Kim   +3 more
wiley   +1 more source

The Thayer Method: Student Active Learning with Positive Results [PDF]

, 2000
Graduation from West Point requires successful completion of four courses in the mathematical sciences. These core mathematics courses include topics in discrete dynamical systems, differential and integral calculus (single variable and multivariable ...
Connors, E.
core   +1 more source