Structural optimization of a wing body with uncertain aerodynamic loads
Ημερομηνία
2015Λέξη-κλειδί
Επιτομή
An algorithm for the structural optimization of wing body structures is presented in this paper. The structural analysis for the computation of displacements and stresses within the wing body is based on a finite volume solver. The topology optimization, based on the original methodology which includes the SIMP algorithm and the smoothing of computed fields using the solution of the Helmholtz equation is implemented. This is applied to solve the minimum compliance problem in a wing-like structure in order to compute the optimal distribution of material within the body that maximizes its stiffness constrained by a user defined volume. The study takes into account the uncertainties in the loading of the wing model and the optimization is robust since the minimization of the mean value and standard deviation of the compliance is sought with respect to these uncertainties using a sparse grid-based technique.
Collections
Related items
Showing items related by title, author, creator and subject.
-
Finite element model validation and predictions using dynamic reduction techniques
Papadioti, D. C.; Papadimitriou, C. (2011)Finite element (FE) model updating and validation techniques are formulated as single and multi-objective optimization problems. A multi-objective optimization framework results in multiple Pareto optimal models that are ... -
Optimization algorithms for system integration
Papadimitriou, C.; Ntotsios, E. (2008)This work outlines the optimization algorithms involved in integrating system analysis and measured data collected from a network of sensors. The integration is required for structural health monitoring problems arising ... -
Optimal experimental design for structural health monitoring applications
Lam, H. F.; Papadimitriou, C.; Ntotsios, E. (2008)Successful structural health monitoring and condition assessment depends to a large extent on the sensor and actuator networks place on the structure as well as the excitation characteristics. An optimal experimental design ...