FReET (Feasible Reliability Engineering Tool)
is a Multipurpose Probabilistic Software for Statistical, Sensitivity and Reliability Analysis of Engineering Problems
It allows to simulate uncertainties of the problem at random variables level (typically in civi/mechanical engineering -material properties and loading, geometrical imperfections). It includes state-of-the-art probabilistic simulation algorithms to compute the probabilistic response and reliability.
FReET is a modular computer system for performing probabilistic analysis developed mainly for computationally intensive deterministic modeling such as FEM packages, and any user-defined subroutines. Therefore, small-sample simulation techniques are preferred.
SARA is a very successful integration of FReET with the nonlinear FEM software for analysis of concrete and reinforced concrete structures ATENA.
FReET main features:
Probabilistic techniques
-Latin Hypercube Sampling (3 types )
-Crude Monte Carlo simulation
-Simulated Annealing
Stochastic model (inputs )
-Friendly Graphical User Interface (GUI)
-30 probability distribution functions (PDF)
-Description of random variables optionally by statistical moments/parameters/combination of moments and parameters, PD F calculator
-Statistical correlation
-Categories and comparative values for PDFs
-Basic random variables visualization
-User / Theory /Examples manuals
Results features (outputs )
-Histograms and empirical cumulative distribution functions (CDF)
-Statistics of response
-Statistical tests for suitability of PDF
-Nonparametric-rank order sensitivity analysis.
-Parameter variation analysis (deterministic what-if -study)
-Advanced statistical visualization
-Reliability estimation: failure probability, reliability index
FReET author..
Prof. Drahomir Novak, PhD.
email: novak.d@karneval.cz
http://www.freet.cz
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