ANÁLISE DE CONFIABILIDADE ESTRUTURAL DE PROBLEMAS BASEADOS NA MECÂNICA DOS SÓLIDOS Structural Reliability Analysis of problems based on Solid Mechanics
2016
The Solid Mechanics, from simplifying assumptions, provides calculation models that can be applied to various structural problems and establishes the foundation and the understanding for the development of theories and the construction of more complex models. However, within this context, it is common to despise the uncertainties inherent to the properties of the materials involved, the boundary conditions and the geometry of the problem. In this article, Structural Reliability Theory tools are applied to structural problems based on Solid Mechanics in order to analyze them considering some of the uncertainties involved. For this, the Monte Carlo simulation method is used in the reliability analysis of two beams. In the first structure, study seeks to investigate the influence of correlation between random variables on the probability of failure of the structural element. In the second one, the effect of using materials with different behavior (ductile or brittle) and, consequently, different rupture criteria on the estimated probability of failure is analyzed. Structural reliability analysis can provide information which usually is outside the scope of deterministic solutions. Such information enables a more accurate assessment of structural safety and may lead to a better understanding of the structural model in question.
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