Generation of optimized voronoi based interior structures for improved mechanical properties

Download
2019
Öncel, Anıl Can
General design approaches are related with and inspired by natural examples. Since evolution itself pushes beings to their full potentials in the most efficient way, it is important for us to understand, observe and mimic the nature itself. In this study, naturally inspired internal structures are constructed by using hollow Voronoi cells and models are optimized to meet the design requirements. For this purpose, design volume firstly undergoes topology optimization with specific load and support conditions and the volume is divided into several density regions. Cell generation algorithm advances according to the average Von-Misses and principal stress values and deflections in these corresponding regions. The number of Voronoi sites in structurally critical regions is higher than other regions. Thus, the results of the optimization are reflected on the models. Since the Voronoi based interior has high porosity, the selected test models are manufactured via Fused Filament Fabrication process. The proposed approach is tested on several cases and the performance of the method is compared with respect to the cases having random Voronoi site distributions and regular infill patterns. According to the test results, strength-to-weight ratios of the tested artefacts are enhanced.

Suggestions

Generation of optimized voronoi based interior structures for improved mechanical properties
Öncel, Anil Can; Yaman, Ulaş (2019-01-01)
General design approaches are related with and inspired by natural examples. Since evolution itself pushes beings to their full potentials in the most efficient way, it is important for us to understand, observe and mimic the nature itself. In this study, naturally inspired internal structures are constructed by using hollow Voronoi cells and models are optimized to meet the design requirements. For this purpose, design volume firstly undergoes topology optimization with specific load and support conditions...
Parametric Urban Design Thinking: Shared Patterns in Design by Algorithm and Design by Drawing
Çalışkan, Olgu; Ongun, Gokhan (2021-12-01)
The paper suggests a focused examination of the processes of drafting-based design and parametric design in urbanism. It discusses how spatial design's settled cognition would differ by using algorithmic systems through the altered relationships between the basic operations in design. To reveal the commonalities and distinctions between the two design methods, the authors present the detailed documentation of the workshop series, which experimented with both techniques within similar design contexts. By the...
Performance-based parametric design explorations: A method for generating appropriate building components
Ercan, Burak; Elias Özkan, Soofia Tahira (2015-05-01)
Performance-based parametric design explorations depend on formulating custom-designed workflows that require reading, writing, interpreting and manipulating databases, as part of the design process. The possibilities of customization and parameterization offered by the user-friendly interfaces of advanced building-performance simulation software and digital design tools have now enabled architects to carry out performance-based design explorations without the help of simulation experts. This paper presents...
Topology optimization of 2.5D parts using the SIMP method with a variable thickness approach
Kandemir, Volkan; Doğan, Oğuz; Yaman, Ulaş (Elsevier BV; 2018-06-10)
In this study, the Solid Isotropic Material with Penalization (SIMP) topology optimization method is employed on the artifacts via keeping the penalization factor as unity. When the penalization is not carried out, the finite elements of the artifact have intermediate material densities. These density values are then used as the thicknesses of the corresponding finite elements and conformal surfaces are formed utilizing these heights in the proposed method. We evaluated the performance of the method with th...
Experience reflection modelling as a generative research method in an educational case for sustainable product design
Turhan, Senem; Doğan, Çağla (2014-01-01)
A generative research method, namely Experience Reflection Modelling (ERM), has been developed aimed at helping students explore and reflect upon design considerations for sustainability in the idea generation phase of a design process. ERM has been integrated into a product design for sustainability project as part of the design education in the Department of Industrial Design at Middle East Technical University. This paper begins by providing an overview of the generative research approach, explaining its...
Citation Formats
A. C. Öncel, “Generation of optimized voronoi based interior structures for improved mechanical properties,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Mechanical Engineering., Middle East Technical University, 2019.