Structural and Multidisciplinary Optimization

, Volume 57, Issue 3, pp 977–994 | Cite as

Multi-model reliability-based design optimization of structures considering the intact configuration and several partial collapses

  • Clara Cid Bengoa
  • Aitor Baldomir
  • Santiago Hernández
  • Luis Romera


Some structures require keeping a specific safety level even if part of their elements have collapsed. The aim of this paper is to obtain the optimum design of these structures when uncertainty in some parameters that affects to the structural response is also considered. A Reliability-Based Design Optimization (RBDO) problem is formulated in order to minimize the mass of the structure fulfilling probabilistic constraints in both intact and damaged configurations. The proposed methodology combines the formulation of multi-model optimization with RBDO techniques programmed in a Matlab code. Two application examples are presented consisting of a two-dimensional truss structure with stress constraints as well as a curved stiffened panel of an aircraft fuselage subjected to buckling constraints.


Fail-safe design Damaged configurations Uncertainty Reliability index Optimization Multi-model RBDO 



The research leading to these results is part of the research project DPI2016-76934-R financed by the Spanish Ministry of Economy and Competitiveness.


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Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  1. 1.Structural Mechanics Group, School of Civil EngineeringUniversidade da Coruña, Campus de Elviña s/nA CoruñaSpain

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