A Hybrid Method for Truss Mass Minimization considering Uncertainties
Joint Authors
Gomes, Herbert M.
Corso, Leandro L.
Source
Mathematical Problems in Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-06-13
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
In real-world structural problems, a number of factors may cause geometric imperfections, load variability, or even uncertainties in material properties.
Therefore, a deterministic optimization procedure may fail to account such uncertainties present in the actual system leading to optimum designs that are not reliable; the designed system may show excessive safety or sometimes not sufficient reliability to carry applied load due to uncertainties.
In this paper, we introduce a hybrid reliability-based design optimization (RBDO) algorithm based on the genetic operations of Genetic Algorithm, the position and velocity update of the Particle Swarm Algorithm (for global exploration), and the sequential quadratic programming, for local search.
The First-Order Reliability Method is used to account uncertainty in design and parameter variables and to evaluate the associated reliability.
The hybrid method is analyzed based on RBDO benchmark examples that range from simple to complex truss parametric sizing optimizations with stress, displacements, and frequency deterministic and probabilistic constraints.
The proposed final problem, which cannot be handled by single loop RBDO algorithms, highlights the importance of the proposed approach in cases where the discrete design variables are also random variables.
American Psychological Association (APA)
Gomes, Herbert M.& Corso, Leandro L.. 2017. A Hybrid Method for Truss Mass Minimization considering Uncertainties. Mathematical Problems in Engineering،Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1189809
Modern Language Association (MLA)
Gomes, Herbert M.& Corso, Leandro L.. A Hybrid Method for Truss Mass Minimization considering Uncertainties. Mathematical Problems in Engineering No. 2017 (2017), pp.1-14.
https://search.emarefa.net/detail/BIM-1189809
American Medical Association (AMA)
Gomes, Herbert M.& Corso, Leandro L.. A Hybrid Method for Truss Mass Minimization considering Uncertainties. Mathematical Problems in Engineering. 2017. Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1189809
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1189809