RBDO_Class - 1 Structural Reliability • Structural limit...

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Unformatted text preview: 1 Structural Reliability • Structural limit states are often defined as a difference between Strength ( R ) and Load ( S ): • Probability of failure can be defined as • Or, using reliability f R ( r ), f S ( s ) S , R Text PDF of Failure R- S Text Text Text Text Text Text T e x t T e x t T e x t T e x t T e x t T e x t T e x t F S ( s ) F R ( r ) f S ( s* ) F R ( s *) Text 2 Reliability Analysis • Uncertainty propagate through physical system Physical System Output Uncertainty Input Statistical Uncertainty Model Uncertainty X S(X) Finite element, Mathematical modeling, Etc. S”(X)+C(X)S’(X)+K(X)S(X)=F(X) 3 Deterministic Optimization vs RBDO Initial Design Feasibility Check Design Optimization Critical G? Engineering Analysis (e.g.,, FEA) Converged? Termination Design Update Deterministic Design Optimization Preliminary Reliability Analysis Design Optimization Critical G p ? Refined Reliability Analysis Engineering Analysis (e.g.,, FEA) Converged?...
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This note was uploaded on 02/15/2012 for the course EAS 6939 taught by Professor Staff during the Spring '08 term at University of Florida.

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RBDO_Class - 1 Structural Reliability • Structural limit...

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