Results 91 to 100 of about 7,268 (236)

Polynomial chaos-based extended Padé expansion in structural dynamics [PDF]

, 2017
The response of a random dynamical system is totally characterized by its probability density function (pdf). However, determining a pdf by a direct approach requires a high numerical cost; similarly, surrogate models such as direct polynomial chaos ...
Jacquelin, E., Sinou, J.-J., S. Adhikari, O. Dessombz, J.‐J. Sinou, Friswell, M.I., Adhikari, Sondipon, Adhikari, S., Friswell, Michael Ian, E. Jacquelin, Sondipon Adhikari, Jacquelin, Eric, Sinou, Jean-Jacques, Dessombz, O., Dessombz, Olivier, Michael Friswell, M. I. Friswell   +16 more
core   +1 more source

Efficient Statistical Extraction of the Per-Unit-Length Capacitance and Inductance Matrices of Cables with Random Parameters

Advanced Electromagnetics, 2015
Cable bundles often exhibit random parameter variations due to uncertain or uncontrollable physical properties and wire positioning. Efficient tools, based on the so-called polynomial chaos, exist to rapidly assess the impact of such variations on the ...
P. Manfredi, F. Canavero
doaj   +1 more source

An Integrated Lumped Parameter Model and Computational Fluid Dynamics Framework for Predicting Hemodynamic Parameters in Pulmonary Vein Stenosis

Comprehensive Physiology, Volume 16, Issue 3, June 2026.
This work presents a novel computational simulation framework for the study of pulmonary venous hemodynamics that integrates a closed‐loop lumped parameter model (LPM) of the cardiovascular system with a computational fluid dynamics (CFD) model of the pulmonary veins and left atrium. Coupling of the LPM and CFD models was accomplished through surrogate
Alessia Di Nardo, David A. Romero, Rachel D. Vanderlaan, Cristina H. Amon   +3 more
wiley   +1 more source

Probability’s uncertainty in stochastic dynamical control systems

RUDN Journal of Engineering Research, 2014
This study applies generalized polynomial chaos theory to dynamic systems with uncertainties.
K A Pupkov, E A Smetanina
doaj  

Local/global non-intrusive coupling strategy for robust design: a first attempt

Advanced Modeling and Simulation in Engineering Sciences
This work investigates how non-intrusive local/global coupling strategies can be applied in the context of robust design. The objective is to propagate uncertainties from the local to the global scale using non-intrusive techniques, in order to estimate ...
Léa Karaouni, Ludovic Chamoin, Olivier Allix, Stéphane Guinard   +3 more
doaj   +1 more source

Exact Solutions and Nonlinear Dynamical Behavior in a Navier‐Stokes‐Type Model for Elastic Cylindrical Vessels: An Analytical and Computational Approach

Engineering Reports, Volume 8, Issue 6, June 2026.
This study investigates a nonlinear Navier‐Stokes‐type model for elastic cylindrical vessels. Exact solutions are derived via the Bäcklund transformation and the ϕ6$$ {\phi}^6 $$‐expansion method, and dynamical behaviors are analyzed using bifurcation and chaos tools, revealing diverse wave structures and parameter‐dependent propagation characteristics.
Sheikh Zain Majid, Fatma Nur Kaya Sağlam, Mohammad Safi Ullah   +2 more
wiley   +1 more source

UNCERTAINTY QUANTIFICATION IN STOCHASTIC SYSTEMS USING POLYNOMIAL CHAOS EXPANSION

, 2010
In recent years, extensive research has been reported about a method which is called the generalized polynomial chaos expansion. In contrast to the sampling methods, e.g., Monte Carlo simulations, polynomial chaos expansion is a nonsampling method which
K. SEPAHVAND, H.-J. HARDTKE, S. MARBURG
core   +1 more source

Development and Optimization of a Nanophytosomes‐Based Thermogel as a Topical Anti‐Psoriatic for Increased Solubility and Bioavailability

MedComm – Biomaterials and Applications, Volume 5, Issue 2, June 2026.
Schematic illustration of the development, optimization, and therapeutic evaluation of the Leucas aspera phytosome‐based thermogel for topical antipsoriatic therapy, highlighting its enhanced solubility, skin deposition, and in vivo efficacy in an imiquimod‐induced psoriasis model. Created with BioRender.com.
Ananda Kumar Chettupalli, Thatipally Rajeshwar, Sarad Pawar Naik Bukke   +2 more
wiley   +1 more source

Non intrusive polynomial chaos-based stochastic macromodeling of multiport systems [PDF]

, 2014
We present a novel technique to efficiently perform the variability analysis of electromagnetic systems. The proposed method calculates a Polynomial Chaos-based macromodel of the system transfer function that includes its statistical properties.
Dhaene, Tom, F. Ferranti, Knockaert, Luc, D. Spina, Spina, Domenico, T. Dhaene, Ferranti, Francesco, Antonini, G, L. Knockaert, G. Antonini   +9 more
core   +1 more source

From Stability to Chaos: A Complete Classification of the Damped Klein‐Gordon Dynamics

Mathematical Methods in the Applied Sciences, Volume 49, Issue 9, Page 9696-9708, June 2026.
ABSTRACT We investigate the transition between stability and chaos in the damped Klein‐Gordon equation, a fundamental model for wave propagation and energy dissipation. Using semigroup methods and spectral criteria, we derive explicit thresholds that determine when the system exhibits asymptotic stability and when it displays strong chaotic dynamics ...
Carlos Lizama, Marina Murillo‐Arcila, Julio Puerta‐Fernández   +2 more
wiley   +1 more source