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Robust Reliability-based Design Optimization of Suspension Bridges
2004Design rules for modern cable suspension bridges are developed using reliability theories inside a general risk management based framework. In this context, optimal structural design must be considered under the presence of uncertainties in loading, geometry and material properties, whereas the deterministic approaches of optimization neglect the ...
BIONDINI, FABIO +3 more
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Reliability‐based design optimization with dependent interval variables
International Journal for Numerical Methods in Engineering, 2012SUMMARYReliability‐based design optimization (RBDO) ensures design requirements are satisfied at required reliability levels in the presence of uncertainty. The recent RBDO methodologies can accommodate two types of uncertainty – aleatory type, represented by random variables, and epistemic type, represented by interval variables.
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Epistemic uncertainty in reliability-based design optimization
2012 Proceedings Annual Reliability and Maintainability Symposium, 2012Reliability-based design optimization (RBDO) needs to take into account of both aleatory and epistemic uncertainties. It is critical to explore these uncertainty sources and evaluate their impacts on RBDO. This paper provides a comprehensive study of uncertainties, in which the uncertainty sources are listed, categorized and their impacts are discussed.
Xiaotian Zhuang, Rong Pan
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An integral method for Reliability-Based design Optimization
Computer Methods in Applied Mechanics and EngineeringzbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhenzhong Chen +6 more
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Reliability‐based design optimization with equality constraints
International Journal for Numerical Methods in Engineering, 2007AbstractEquality constraints have been well studied and widely used in deterministic optimization, but they have rarely been addressed in reliability‐based design optimization (RBDO). The inclusion of an equality constraint in RBDO results in dependency among random variables.
Xiaoping Du, Beiqing Huang
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Interactive Reliability-Based Optimal Design
1994Interactive design/optimization of large, complex structural systems is considered. The objective function is assumed to model the expected costs. The constraints are reliability-based and/or related to deterministic code requirements. Solution of this optimization problem is divided in four main tasks, namely finite element analyses, sensitivity ...
Sørensen, John Dalsgaard +4 more
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Reliability-based design optimization of stiffened panels
Fourth International Symposium on Uncertainty Modeling and Analysis, 2003. ISUMA 2003., 2004We explore reliability-based designs of isogrid stiffened panels. Uncertainties in material properties and geometric manufacturing uncertainties are represented by random variables. Due to the multiple failure modes in the stiffened panels, polynomial response surface approximation are fit to the most critical safety margins in the panel.
null Xueyong Qu, R.T. Haftka
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Approximation methods for reliability‐based design optimization problems
GAMM-Mitteilungen, 2007AbstractDeterministic optimum designs are obtained without considering of uncertainties related to the problem parameters such as material parameters (yield stress, allowable stresses, moment capacities, etc.), external loadings, manufacturing errors, tolerances, cost functions, which could lead to unreliable designs, therefore several methods have ...
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