Software Development on the MATLAB for Structural Reliability and Sensitivity Analysis
Carlo Yukio Nunes1; Nilson Martins Alves Neto1; Plínio Glauber Carvalho dos Prazeres1; Sandoval José Rodrigues Júnior1; Regina Augusta Campos Sampaio1
1 Universidade Federal do Pará - UFPa
doi:10.20906/CPS/CILAMCE2017-0570
Resumo
In this paper, we present the software for reliability analysis, named RelyLAB. We developed it in the MATLAB environment using the symbolic math tool. Two methods are implemented: the First Order Reliability (FORM) and the Second Order Reliability (SORM) Methods. We assess the random variables with the omission sensitivity factors, which provides the relative importance of the reliability index of each variable in uncertainty terms. In order to enhance decisions about the parameters of mean and standard deviation, we implement its sensitivities, providing the best parameter to change in an efficient design. To prove the software effectiveness, we applied in a steel connection model to enhance the design efficiently. Furthermore, we compared the sensitivity analysis of the analytical model with the changes in the variables to validate them and to show the reliability analysis performed by the software, providing the ideal decision under uncertainty based on sensitivity analysis tools.
Palavras-chave: Reliability Analysis; Software Development; MATLAB; Sensitivity Analysis; Steel Connections