A Modified Bi-directional Structural Topological Optimization Using Various Finite Elements
Date Issued
2015
Date
2015
Author(s)
Chu, Ka-Weng
Abstract
This thesis studies bi-directional evolutionary structural optimization method (BESO) by using various finite elements. Evolutionary Structural Optimization method (ESO) fails in some boundary condition cases because of its simple procedure in removing elements. To solve this problem, BESO method is modified by filling back element with combing the concept of smoothing and projection. The research of using different finite elements in BESO method is proposed in this thesis. Several examples are illustrated against the stability of evolution process, evolution rate and structural element dependence problems, etc. At the same time, the modified draw direction constraints can be applied to solve more situations the machining problem. A BESO program which integrates Visual Studio and ANSYS is developed, and the parametric parameters make the users easily to apply. The feasibility and the application of BESO method applying to different element types and the modified draw direction constraints are proved in this thesis through the numerical examples.
Subjects
Topology optimization
Evolutionary structural optimization
finite element types
Manufacturing constraints
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-104-R01522640-1.pdf
Size
23.54 KB
Format
Adobe PDF
Checksum
(MD5):0c1e747bc8f970b348479dfed7309947