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VOŘECHOVSKÝ, M., NOVÁK, D.
Original Title
Simulation of random fields for stochastic finite element analysis
English Title
Type
Paper in proceedings (conference paper)
Original Abstract
Randomizaci komerčnách a akademických programů založených na metodě konečných prvků je v poslední době věnována nárůstající pozornost. Jenomže výpočtové nároky jsou zejména u nelineárních úloh čaasto značné Simulace náhodných polí je základní úlohou v metodě stochastických konečných prvků (SFEM). There are many techniques available nowadays, but for computationally intensive problems (typically nonlinear FEM calculations) we are constrained by small number of Monte Carlo type simulations we can afford. The paper proposes a method which combines the spectral decomposition of covariance matrix and improved Latin Hypercube Sampling (LHS). Paper tackles some extremely important aspects of random fields simulation for SFEM with small number of simulations at satisfactory accuracy: improvements to both basic statistical moments and autocorrelation structure of simulated random field. All these aspects are important for computational efficiency, robustness and accuracy in SFEM.
English abstract
Key words in English
Random fields, Autocorrelation, Latin Hypercube Sampling, Orthogonal transformation, Error Assessment
Authors
Released
18.06.2005
Publisher
Millpress Rotterdam
Location
Netherlands
ISBN
90-5966-040-4
Book
Safety and Reliability of Engineering Systems and Structures
Pages from
436
Pages count
8
BibTex
@inproceedings{BUT14797, author="Miroslav {Vořechovský} and Drahomír {Novák}", title="Simulation of random fields for stochastic finite element analysis", booktitle="Safety and Reliability of Engineering Systems and Structures", year="2005", pages="8", publisher="Millpress Rotterdam", address="Netherlands", isbn="90-5966-040-4" }