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Article
Ensemble of surrogate based global optimization methods using hierarchical design space reduction
For computationally expensive black-box problems, surrogate models are widely employed to reduce the needed computation time and efforts during the search of the global optimum. However, the construction of an...
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Article
Surrogate-based optimization with clustering-based space exploration for expensive multimodal problems
This paper presents a surrogate-based global optimization algorithm to solve multimodal expensive black-box optimization problems (EBOPs) with or without expensive nonlinear constraints. Two approximation meth...
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Article
Numerical simulation of chip ploughing volume in micro ball-end mill machining
Chip ploughing becomes a more serious problem in micro-machining due to its relatively large size with respect to the finished part, negatively impacting on the accuracy of the finished surface. In this work, ...
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Article
Chip volume and cutting force calculations in 5-axis CNC machining of free-form surfaces using flat-end mills
This paper presents two new methods and associated algorithms for numerically modeling chip geometry and calculating cutting force for parts with free-form surface during 5-axis CNC machining using a flat-end ...
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Chapter
Optimal Operation of a Self-regulating Smart Distribution System with Wind Energy Integration and Demand Response
As an integral part of a smart grid, the smart distribution system is an important concept that employs advanced communication, control and information technologies to manage and optimize the resources of a fe...
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Article
Multi-start Space Reduction (MSSR) surrogate-based global optimization method
In this work, a new Multi-start Space Reduction (MSSR) and surrogate-based search algorithm is introduced for solving global optimization problems with computationally expensive black-box objective and/or expe...
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Article
Development of a metamodel assisted sampling approach to aerodynamic shape optimization problems
A new metamodel-assisted sampling search approach applied to the aerodynamic shape optimization of turbomachinery airfoils is presented in this paper. The proposed methodology integrates a non-uniform rational...
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Article
Application of SEUMRE global optimization algorithm in automotive magnetorheological brake design
In this paper, the superior performance of a novel space exploration and unimodal region elimination global optimization algorithm, SEUMRE, is demonstrated through comparisons with other well known global opti...
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Article
A 3D curvature gouge detection and elimination method for 5-axis CNC milling of curved surfaces
Based on the concept of Eular-Meusnier Spheres (EMS) that portrays the generic curvature model of surfaces, a new three-dimensional (3D) method for curvature gouge detection and elimination in sculpture surface m...
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Chapter
Optimal Tool Path Generation for 2 1/2 D Milling of Dies and Molds
Sculptured parts are usually produced through 2 ½ D rough machining and 3D–5D finish machining. The 2 ½ D, or contour map, rough machining plays a major role in removing excess material of the stock to form th...
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Chapter
Machining Process Modeling for Intelligent Rough Machining of Sculptured Parts
Rough machining removes the excess part material and dominates the machining time of a sculptured part. Maximization of the material removal rate using optimized cutting parameters for rough machining can cons...
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Chapter and Conference Paper
Global Optimization of Mechanical Designs Based upon Integrated Computer Models and Virtual Prototypes
Recent advances in Computer-Aided Design and Engineering (CAD/CAE) made virtual prototy** feasible. Instead of going through the costly and time-consuming physical prototype development and testing process, ...
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Chapter
Automated Cost Modeling for Tolerance Synthesis Using Manufacturing Process Data, Knowledge Reasoning and Optimization
In this paper, a method for automatically generating cost-tolerance models based upon given design geometry and tolerance using manufacturing process data is presented. The method predicts the manufacturing co...
