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VGU RESEARCH REPOSITORY


Please use this identifier to cite or link to this item: https://epub.vgu.edu.vn/handle/dlibvgu/749
Title: A polytree-based adaptive polygonal fnite element method for multi-material topology optimization
Authors: Nguyen Khai Chau 
Keywords: Polytree;Multi–material topology optimization;Arbitrary element
Issue Date: 2019
Publisher: Vietnamese - German University
Abstract: 
This thesis illustrates a polytree–based adaptive approach for local refnement in multi–material topology optimization (MMTOP) problems. The polytree mesh is introduced with its general adaptive data structure for arbitrary element types. In the optimization process, the adaptive mesh is generated automatically by the Centroidal Voronoi Tessellation (CVT) and error analysis. In order to resolve hanging nodes in element edges, the double mapping scheme is employed on a standard reference element to compute the shape function and their corresponding derivatives. For sharpening the material interfaces in a multi–level mesh, the so–called adaptive flter is released to improve the performance of the optimizer. The connection between multi–material topology optimization and additive manufacturing is also demonstrated to highlight a special role of numerical simulation in industrial production.
URI(1): http://epub.vgu.edu.vn/handle/dlibvgu/749
Rights: Attribution-NonCommercial 4.0 International
Appears in Collections:Computational Engineering (CompEng)

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