A Study of structural design based on optimality

Download

index.pdf

Date

2019

Author

Tamkan, Durukan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

169
views

100
downloads

Topology optimization is one of the most powerful tool that designers use to reduce weight and cost in aerospace industry. However, traditional manufacturing techniques limit the oncoming advantages of topology optimization. New manufacturing techniques change the philosophy of topology optimization nearly dismissing the limits of manufacturing. Additive manufacturing not only adjoins complex shapes to design but also adjoins porous/lattice structures. In the first part of the thesis, a boarding step is optimized with respect to traditional methods with Ti-6Al-4V material and load patterns with respect to stress levels are investigated. In the second part, the boarding step is optimized with lattice structures without any overall volume reduction with the help of load patterns done in the first part. Optimized lattice design is compared with previous conventional aluminum and 3D woven composite designs.

Subject Keywords

Additive manufacturing., Additive manufacturing, Topology optimization, Aircraft structures, Lattice structures, Ti-6Al-4V.

URI

http://etd.lib.metu.edu.tr/upload/12625073/index.pdf
https://hdl.handle.net/11511/45475

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

A New Design Approach for Rapid Evaluation of Structural Modifications Using Neural Networks Demirkan, O.; Olceroglu, E.; BAŞDOĞAN, FATMA İPEK; Özgüven, Hasan Nevzat (2013-02-01) Design optimization of structural systems is often iterative, time consuming and is limited by the knowledge of the designer. For that reason, a rapid design optimization scheme is desirable to avoid such problems. This paper presents and integrates two design methodologies for efficient conceptual design of structural systems involving computationally intensive analysis. The first design methodology used in this paper is structural modification technique (SMT). The SMT utilizes the frequency response funct...
Development of a web-based manufacturing application system for rotational parts Özsüer, Erhan; Anlağan, Ömer; Department of Mechanical Engineering (2003) Developing process plans and part programs rapidly and correctly for CNC machine tools plays a vital role in manufacturing. This study is concerned with the development of a web-enabled virtual design and manufacturing application system for rotational parts. The object oriented methodology is used in the application development. Windows Distributed interNet Application (DNA) architecture which describes a framework of building software technologies in an integrated web and client-server model of computing,...
A methodology for examining the role of adaptive expertise on CAD modeling Johnson, Michael D.; Öztürk, Elif; Valverde, Lauralee; Yalvac, Bugrahan; McGary, Prentiss; Peng, Xiaobo (2013-01-01) Computer-aided design (CAD) tools play a significant role in the modern product commercialization environment. As CAD and general CAx technology advances, it becomes more important to understand how engineers adapt their expertise to new environments and problems. This work examines a methodology consisting of a set of surveys, interviews, and exercises with a small group of practicing engineers to assess adaptive expertise (AE) and relate this AE to CAD modeling performance and procedures. Results detail A...
A robust optimization model for sustainable and resilient closed-loop supply chain network design considering conditional value at risk Lotfi, Reza; Mehrjerdi, Yahia Zare; Pishvaee, Mir Saman; Sadeghieh, Ahmad; Weber, Gerhard Wilhelm (2021-06-01) One of the challenges facing supply chain designers is designing a sustainable and resilient supply chain network. The present study considers a closed-loop supply chain by taking into account sustainability, resilience, robustness, and risk aversion for the first time. The study suggests a two-stage mixed-integer linear programming model for the problem. Further, the robust counterpart model is used to handle uncertainties. Furthermore, conditional value at risk criterion in the model is considered in orde...
Design of a high precision hybrid AM machine Yılmaz, Yunus Emre; Dölen, Melik; Department of Mechanical Engineering (2019) Precision requirements in fused deposition modelling (FDM) processes have been increasing in recent years, especially after recognizing the potential of FDM process to produce complex and functional components. In order to increase precision of FDM process, 6-axis hybrid manufacturing system, which can carry out additive- and subtractive manufacturing processes in one manufacturing system platform, is designed. During design, kinematic analysis of the machine is done, axial- and angular errors are estimated...

Citation Formats

D. Tamkan, “A Study of structural design based on optimality,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Mechanical Engineering., Middle East Technical University, 2019.