Results 71 to 80 of about 3,846 (183)

Finite Strain Robust Topology Optimization Considering Multiple Uncertainties

International Journal for Numerical Methods in Engineering, Volume 126, Issue 20, 30 October 2025.
ABSTRACT This paper presents a computational framework for the robust stiffness design of hyperelastic structures at finite deformations subject to various uncertain sources. In particular, the loading, material properties, and geometry uncertainties are incorporated within the topology optimization framework and are modeled by random vectors or random
Nan Feng, Guodong Zhang, Kapil Khandelwal   +2 more
wiley   +1 more source

Development of a Projection‐Based Advanced Deterministic Uncertainty Analysis in Low Dimensions

International Journal for Numerical Methods in Engineering, Volume 126, Issue 20, 30 October 2025.
ABSTRACT This paper provides an in‐depth exploration of reduced order modeling and uncertainty quantification relevant to engineering disciplines. The objective of this study is to develop an innovative uncertainty quantification algorithm incorporating a reduced order model suitable for complex system calculations, with the goal of maintaining an ...
Jaeseok Heo, Young Suk Bang
wiley   +1 more source

Low-Rank Separated Representation Surrogates of High-Dimensional Stochastic Functions: Application in Bayesian Inference

, 2013
This study introduces a non-intrusive approach in the context of low-rank separated representation to construct a surrogate of high-dimensional stochastic functions, e.g., PDEs/ODEs, in order to decrease the computational cost of Markov Chain Monte Carlo
Validi, AbdoulAhad
core   +1 more source

The Performance of DIXSG on Characterizing Global and Regional Ionospheric Disturbances Utilizing Geodetic Receiver Network‐A Case Study

Space Weather, Volume 23, Issue 10, October 2025.
Abstract As the 25th solar cycle enters a highly active phase, the resulting ionospheric irregularities induce disturbances in signals of Global Navigation Satellite System (GNSS), significantly disrupting its global stable positioning, navigation, and timing services.
Dongsheng Zhao, Xueli Zhang, Peicheng Zhang, Hao Liu, Kefei Zhang, Wang Li, Andong Hu, Longjiang Li, Shuanglei Cui, Yuhao Hou, Craig M. Hancock, Andrzej Krankowski   +11 more
wiley   +1 more source

Uncertainty Quantification for Multi‐Input Fluvial Flood Inundation Using GPR‐ and PCE‐Based Surrogates

Water Resources Research, Volume 61, Issue 10, October 2025.
Abstract With increasing computational capabilities, the implementation of statistical approaches to quantify and propagate input uncertainties through hydrodynamic models has become increasingly feasible and crucial to capture the full range of output scenarios.
Adil Siripatana, Amy L. Wilson, Lindsay Beevers   +2 more
wiley   +1 more source

Uncertainty Quantification for Nonlinear Vibration of Supercritical Drive Shaft With a Dry Friction Damper

International Journal of Mechanical System Dynamics, Volume 5, Issue 3, Page 463-480, September 2025.
ABSTRACT The supercritical drive shaft is becoming increasingly popular in helicopter transmission system. Dry friction dampers are specially employed to ensure the supercritical shafts crossing the critical speed safely. Due to design tolerances, manufacturing errors and time‐varying factors, the parameters of the damper are inherently uncertain ...
Liyao Song, Meijun Liao, Weifang Chen, Rupeng Zhu, Dan Wang   +4 more
wiley   +1 more source

A Total Lagrangian Stochastic Finite Element Method for Hyperelastic Analysis With Uncertainties

International Journal for Numerical Methods in Engineering, Volume 126, Issue 15, 15 August 2025.
ABSTRACT This article presents a total Lagrangian stochastic finite element method to solve hyperelastic problems with uncertainties. Similar to deterministic hyperelastic analysis, prescribed external forces or boundary values are applied through a series of load steps.
Zhibao Zheng, Udo Nackenhorst
wiley   +1 more source

Multifidelity Uncertainty Quantification of a Commercial Supersonic Transport [PDF]

The objective of this work was to develop a multifidelity uncertainty quantification approach for efficient analysis of a commercial supersonic transport.
Phillips, Ben D., West, Thomas K., IV
core   +1 more source

Determination of Bootstrap confidence intervals on sensitivity indices obtained by polynomial chaos expansion [PDF]

, 2012
L’analyse de sensibilité a pour but d’évaluer l’influence de la variabilité d’un ou plusieurs paramètres d’entrée d’un modèle sur la variabilité d’une ou plusieurs réponses.
Berveiller, Marc, Dubreuil, Sylvain, Petitjean, Frank, Salaün, Michel   +3 more
core  

Thermo‐Electro‐Mechanical Modeling of Failure: Application to Long‐Term Reliability of Aging Transmission Lines

Engineering Reports, Volume 7, Issue 4, April 2025.
A one‐dimensional representation of an initially damaged conductor cable is subject to mechanical tension, heat exchange with the environment, and an electric current, which combined lead to thermal failure from overheating. The deterministic solution of the physical system through the finite element method enters the PCM stochastic solver as a black ...
Eduardo A. Barros De Moraes, K. C. Prakash, Mohsen Zayernouri   +2 more
wiley   +1 more source