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Chapter and Conference Paper
Multi-objective Aerodynamic Design Optimization of Rotor Airfoils Using an Efficient Surrogate-Based Algorithm
To address the challenge of the aerodynamic design of rotors airfoils, this paper implements a rotor airfoils design optimization method by coupling the RANS solver and an efficient surrogate-based multi-objec...
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Chapter and Conference Paper
Twin Support Vector Regression and Its Application on Aerodynamic Design
Surrogate modeling is playing an increasingly important role in multidisciplinary design optimization (MDO) related to different areas of aerospace science and engineering, Support vector regression (SVR), due...
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Article
Inhomogeneous deformation growth of a metal under cyclic loading and its influence on fatigue
In this paper, the effects of inhomogeneous material deformation and fatigue caused by meso-mechanical inhomogeneity are investigated. A representative volume element is constructed for pure copper as a materi...
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Article
Constraint aggregation for large number of constraints in wing surrogate-based optimization
The method of aggregating a large number of constraints into one or few constraints has been successfully applied to wing structural design using gradient-based local optimization. However, numerical difficult...
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Article
Variable-fidelity expected improvement method for efficient global optimization of expensive functions
The efficient global optimization method (EGO) based on kriging surrogate model and expected improvement (EI) has received much attention for optimization of high-fidelity, expensive functions. However, when t...
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Article
Analysis of meso-inhomogeneous deformation on a metal material surface under low-cycle fatigue
A polycrystalline Voronoi aggregation with a free surface is applied as the representative volume element (RVE) of the nickel-based GH4169 superalloy. Considering the plastic deformation mechanism at the grain...
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Article
Influences of initial porosity, stress triaxiality and Lode parameter on plastic deformation and ductile fracture
Local mechanical properties in aluminum cast components are inhomogeneous as a consequence of spatial distribution of microstructure, e.g., porosity, inclusions, grain size and arm spacing of secondary dendrit...
