Results 1 - 10
of
1,171
Uncertainty Quantification In
"... We present an overview of new research efforts underway at Sandia National Laboratories to understand the sources of uncertainty and error in computational structural dynamics and other physics simulations, and to quantify their effects on predictive accuracy. In order to establish confidence in com ..."
Abstract
- Add to MetaCart
comprehensive quantification of uncertainties and errors from all phases of the modeling and simulation process. Uncertainty and error quantification is a two-step process, the first step being the identification of all uncertainty and error sources in each phase of modeling and simulation. The second step
Uncertainty Quantification
"... Abstract—This paper presents a statistical assessment of scattered field from a building facade having random physical and geometrical parameters. A simple inhomogeneous model is considered for the building and the calculation method is based on Green’s functions. The basis of polynomial chaos expan ..."
Abstract
- Add to MetaCart
expansion method is explained and applied to estimate the scattered electric field from a building facade having 8 random parameters, in specular and non-specular scenarios. Uncertainty analysis and total output distribution are discussed in different diffraction zones of the building. Index Terms
Uncertainty quantification
, 2011
"... Random parameters Probability density function Hyperbolic conservation law a b s t r a c t We develop a probabilistic approach to quantify parametric uncertainty in first-order hyperbolic conservation laws (kinematic wave equations). The approach relies on the der-ivation of a deterministic equation ..."
Abstract
- Add to MetaCart
Random parameters Probability density function Hyperbolic conservation law a b s t r a c t We develop a probabilistic approach to quantify parametric uncertainty in first-order hyperbolic conservation laws (kinematic wave equations). The approach relies on the der-ivation of a deterministic
Applications of uncertainty quantification in energy
"... Non-intrusive Uncertainty Quantification (UQ) has the advantage that it can readily be applied to many differ-ent problems. Here the focus is mainly on the results of successful applications of uncertainty quantification in energy. Renewable electrical energy sources are necessary to reduce our curr ..."
Abstract
- Add to MetaCart
Non-intrusive Uncertainty Quantification (UQ) has the advantage that it can readily be applied to many differ-ent problems. Here the focus is mainly on the results of successful applications of uncertainty quantification in energy. Renewable electrical energy sources are necessary to reduce our
Convex Optimal Uncertainty Quantification
"... Abstract Optimal uncertainty quantification (OUQ) is a framework for numerical extreme-case analysis of stochastic systems with imperfect knowledge of the underlying probability distribution and functions/events. This paper presents sufficient conditions (when underlying functions are known) under ..."
Abstract
- Add to MetaCart
Abstract Optimal uncertainty quantification (OUQ) is a framework for numerical extreme-case analysis of stochastic systems with imperfect knowledge of the underlying probability distribution and functions/events. This paper presents sufficient conditions (when underlying functions are known) under
Model Validation and Uncertainty Quantification
, 2000
"... This session offers an open forum to discuss issues and directions of research in the areas of model updating, predictive quality of computer simulations, model validation and uncertainty quantification. Technical presentations review the state-of-the-art in nonlinear dynamics and model validation f ..."
Abstract
-
Cited by 2 (0 self)
- Add to MetaCart
This session offers an open forum to discuss issues and directions of research in the areas of model updating, predictive quality of computer simulations, model validation and uncertainty quantification. Technical presentations review the state-of-the-art in nonlinear dynamics and model validation
Epistemic uncertainty quantification tutorial
- In Proceedings of the IMAC XXVII conference and exposition on structural dynamics, number 294
, 2009
"... This paper presents a basic tutorial on epistemic uncertainty quantification methods. Epistemic uncertainty, characterizing lack-of-knowledge, is often prevalent in engineering applications. However, the methods we have for analyzing and propagating epistemic uncertainty are not as nearly widely use ..."
Abstract
-
Cited by 7 (1 self)
- Add to MetaCart
This paper presents a basic tutorial on epistemic uncertainty quantification methods. Epistemic uncertainty, characterizing lack-of-knowledge, is often prevalent in engineering applications. However, the methods we have for analyzing and propagating epistemic uncertainty are not as nearly widely
MULTISCALE APPROACH TO UNCERTAINTY QUANTIFICATION
"... The authors ’ equation- and Galerkin-free computational approach to uncertainty quantification for dynamical systems conducts UQ computations using short bursts of appropriately initialized ensembles of simulations. Their basic procedure estimates the quantities arising in stochastic Galerkin comput ..."
Abstract
- Add to MetaCart
The authors ’ equation- and Galerkin-free computational approach to uncertainty quantification for dynamical systems conducts UQ computations using short bursts of appropriately initialized ensembles of simulations. Their basic procedure estimates the quantities arising in stochastic Galerkin
Experimental Data for Uncertainty Quantification
"... The propagation of parameter uncertainty through a model to obtain the uncertain vibration response is becoming more practical for industrial scale finite element models due to the increase in computing power available. In some cases the parametric uncertainty may be measured directly, for example t ..."
Abstract
- Add to MetaCart
the thickness of a panel. However the parameters for joint models (for example) must be estimated from measurements using the techniques of finite element model updating. In these cases the techniques of model updating must be extended to allow for uncertainty quantification from a series of measurements
Results 1 - 10
of
1,171