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Methods and Object-Oriented Software for FE Reliability and Sensitivity Analysis with Application to a Bridge Structure

43 citations0/0 files storedJournal of Computing in Civil Engineering

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Probabilistic and Robust Engineering Design Geotechnical Engineering and Analysis Structural Health Monitoring Techniques

Abstract

This paper addresses the growing demand for finite-element software with capabilities to incorporate uncertainty in the input parameters. Reliability and response sensitivity algorithms are implemented in the general-purpose finite-element software OpenSees, which employs an object-oriented programming approach to achieve a sustainable software with focus on maintainability and extensibility. The product is a comprehensive and freely available library of software tools for finite-element reliability and response sensitivity analysis. A numerical example involving a detailed model of a highway bridge with inelastic material behavior and 320 random variables is presented to demonstrate features of the methodology and the software. Importance vectors are employed to rank the input parameters according to their relative influence on the structural reliability. The required response sensitivities are obtained by an extensive implementation of the direct differentiation method.

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References

2017Structural Reliability Analysis and Prediction 1974Exact and Invariant Second-Moment Code Format 1978Structural reliability under combined random load sequences 1996Structural Reliability Methods 1991Optimization algorithms for structural reliability 1989Asymptotic approximations for probability integrals 1993Dynamic response sensitivity of inelastic structures

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