Results 41 to 50 of about 13,785,467 (239)

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

open access: yesAdvanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt   +8 more
wiley   +1 more source

Obtaining the center of gravity, inertia parameters and finite element approximation models of electromagnetic nonlinearity on 6DOF magnetic levitation system by adaptive control method

open access: yesNihon Kikai Gakkai ronbunshu, 2015
This paper provides an adaptive control method for a magnetic levitation using finite element approximation. Thanks to noncontact and frictionless, magnetic levitation can move smoothly and position precisely an object.
Takashi ANDO
doaj   +1 more source

Gradient method with AFEM for parameter-estimation

open access: yesSelecciones Matemáticas, 2023
We consider the adaptive finite element discretization of parameter estimation problems for nonlinear elliptic partial differential equations. The idea is to use a gradient method on the finite-dimensional parameter space for the minimization of the ...
Roland Becker
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

Finite element method using vector finite elements applied to eddy current problems [PDF]

open access: yes, 2011
Vector fields found in electromagnetics are fundamentally different to vector fields found in other research areas such as structural mechanics. Electromagnetic vector fields possess different physical behaviour patterns and different properties in ...
Adams, Leila
core   +1 more source

BI-DIRECTIONAL EVOLUTIONARY STRUCTURAL OPTIMIZATION USING ADAPTIVE P-VERSION FINITE ELEMENT METHOD

open access: yesJixie qiangdu, 2020
The adaptive p-version finite element method is combined with bi-directional evolutionary structural optimization( BESO) for the influence of calculation accuracy on the optimization result in the topology optimization process.
XU JiaoE, YAO Song, LIU Rong
doaj  

Multigrid Discretization and Iterative Algorithm for Mixed Variational Formulation of the Eigenvalue Problem of Electric Field

open access: yesAbstract and Applied Analysis, 2012
This paper discusses highly finite element algorithms for the eigenvalue problem of electric field. Combining the mixed finite element method with the Rayleigh quotient iteration method, a new multi-grid discretization scheme and an adaptive algorithm ...
Yidu Yang, Yu Zhang, Hai Bi
doaj   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

open access: yesAdvanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares   +3 more
wiley   +1 more source

Extended framework of Hamilton’s principle for single-degree-of-freedom nonlinear damping systems

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2021
The paper explores application of the variational formalism called extended framework of Hamilton’s principle to nonlinear damping systems. Single-degree-of-freedom systems with dominant source of nonlinearity from polynomial powers of the velocity are ...
Jinkyu Kim
doaj   +1 more source

Vehicle-bridge dynamic interaction using finite element modelling [PDF]

open access: yes, 2010
First investigations on the dynamic response of bridges due to moving loads were motivated by the collapse of the Chester railway bridge in the UK in the middle of the 19th century.
Arturo Gonzalez, González, Arturo
core   +1 more source

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