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Title:Macro-element approach for topology optimization of trusses using a ground structure method
Author(s):Zhang, Xiaojia
Advisor(s):Paulino, Glaucio H.
Department / Program:Civil & Environmental Eng
Discipline:Civil Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Topology Optimization of Trusses
Ground Structure Method
Structured Quadrilateral Element
Voronoi-based Element
Macro-element Approach
Abstract:In this thesis, the generation of initial ground structures for generic domains in two and three dimensions are discussed. Two methods of discretization are compared: Voronoi-based discretizations and structured quadrilateral discretizations. In addition, a simple and effective member generation approach is proposed: the Macro-element approach; which can be implemented with both types of discretization. The features of the approach are discussed: efficient generation of initial ground structures; reduction in matrix bandwidth for global stiffness matrix; finer control of bar connectivity; and reduction of overlapped bars. Numerical examples are presented which display the features of the proposed approach, and highlight the comparison with literature results and traditional ground structure generation methods.
Issue Date:2014-05-30
Rights Information:Copyright 2014 Xiaojia Zhang
Date Available in IDEALS:2014-05-30
Date Deposited:2014-05

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