A genetic algorithmfor structural optimization

Download

index.pdf

Date

2006

Author

Taşkınoğlu, Evren Eyüp

Metadata

Show full item record

Item Usage Stats

324
views

204
downloads

In this study, a design procedure incorporating a genetic algorithm (GA) is developed for optimization of structures. The objective function considered is the total weight of the structure. The objective function is minimized subjected to displacement and strength requirements. In order to evaluate the design constraints, finite element analysis are performed either by using conventional finite element solvers (i.e. MSC/NASTRAN®) or by using in-house codes. The application of the algorithm is shown by a number of design examples. Several strategies for reproduction, mutation and crossover are tested. Several conclusions drawn from the research results are presented.

Subject Keywords

Mechanical Engineering.

URI

http://etd.lib.metu.edu.tr/upload/2/12607958/index.pdf
https://hdl.handle.net/11511/16156

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

A genetic algorithm for 2d shape optimization Chen, Wei Hang; Oral, Süha; Department of Mechanical Engineering (2008) In this study, an optimization code has been developed based on genetic algorithms associated with the finite element modeling for the shape optimization of plane stress problems. In genetic algorithms, constraints are mostly handled by using the concept of penalty functions, which penalize infeasible solutions by reducing their fitness values in proportion to the degrees of constraint violation. In this study, An Improved GA Penalty Scheme is used. The proposed method gives information about unfeasible ind...
Structural Optimization Using ANSYS Panayırcı, H. Murat; Oral, Süha; Department of Mechanical Engineering (2006) This study describes the process of performing structural optimization using ANSYS. In the first part, the general concepts in optimization and optimization algorithms for different type of optimization problems are covered. Also finite element method is introduced briefly in this part. In the second part, important definitions in structural optimization are mentioned. Then the optimization methods available in ANSYS are explained with their theories. Necessary steps to perform optimization with ANSYS are d...
Design and fabrication of a dna electrophoresis chip based on mems technology Sukas, Sertan; Sert, Cüneyt; Department of Mechanical Engineering (2007) This thesis reports design, fabrication, and implementation of two different micro electrophoresis system architectures for DNA analyses. The first architecture is traditional single channel layout with several design alternatives for size-based separation of DNA fragments. The second one is novel double channel architecture specialized for rapid mutation detection using heteroduplex analysis (HDA) method with an application of a newly designed injection technique. Besides achieving high resolution separati...
A two dimensional euler flow solver on adaptive cartesian grids Siyahhan, Bercan; Aksel, Mehmet Haluk; Department of Mechanical Engineering (2008) In the thesis work, a code to solve the two dimensional compressible Euler equations for external flows around arbitrary geometries have been developed. A Cartesianmesh generator is incorporated to the solver. Hence the pre-processing can be performed together with the solution within a single code. The code is written in the C++ programming language and its object oriented capabilities have been exploited to save memory in the data structure developed. The Cartesian mesh is formed by dividing squares succe...
Three dimensional fracture analysis of FGM coatings İnan, Özgür; Dağ, Serkan; Department of Mechanical Engineering (2004) The main objective of this study is to model the three dimensional surface cracking problem in Functionally Graded Material (FGM) coatings bonded to homogeneous substrates. The FGM coating is assumed to be a (ZrO2) ا (Ti-6Al-4V) layer. Homogeneous ceramic, metal ا rich, ceramic ا rich and linear variation material compositions are considered in the analyses. The surface crack is assumed to have a semi ا circular crack front profile. The surface crack problem in the FGM coating ا substrate system is examined...

Citation Formats

E. E. Taşkınoğlu, “A genetic algorithmfor structural optimization,” M.S. - Master of Science, Middle East Technical University, 2006.