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- Title
Multi-model reliability-based design optimization of structures considering the intact configuration and several partial collapses.
- Authors
Cid Bengoa, Clara; Baldomir, Aitor; Hernández, Santiago; Romera, Luis
- Abstract
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.
- Subjects
AEROSPACE engineering; AIRPLANE fuselage design &; construction; AERONAUTICAL safety measures; RELIABILITY in engineering; UNITED States. Federal Aviation Administration
- Publication
Structural & Multidisciplinary Optimization, 2018, Vol 57, Issue 3, p977
- ISSN
1615-147X
- Publication type
Article
- DOI
10.1007/s00158-017-1789-y