A Quantitative Comparison Between Size, Shape, Topology and Simultaneous Optimization for Truss Structures

Muller, Theodorus Ernst; Klashorst, E. van der

doi:10.1590/1679-78253900

Cited by 13 publications

(14 citation statements)

References 24 publications

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“…25 There are many studies that present the optimization of the spherical dome generated on the basis of an icosahedron. [26][27][28] . The problem of reticulated domes optimization focuses on the minimum weight of structures.…”

Section: Introductionmentioning

confidence: 99%

Two subdivision methods based on the regular octahedron for single- and double-layer spherical geodesic domes

Pilarska

2020

International Journal of Space Structures

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The paper presents the topological–geometric analysis of a selected number of space frames configurations for geodesic domes which are generated from the regular octahedron. Two subdivision methods for spherical triangles, proposed by Fuliński, were used to create two families of structures. The first family consists of six single-layer and six double-layer geodesic domes shaped on the basis of the first method of subdivision, while the second family contains six single-layer and six double-layer geodesic domes shaped on the basis of the second method of subdivision. The calculated results of the geometric parameters of the analyzed structures were used to create original formulas that allow for more advanced structures to be achieved, that is, with a larger number of nodes and struts. The geometric results were also used to create nomograms showing the range of struts of the same length for double-layer geodesic domes. In both single-layer and double-layer domes, the number of groups of struts of equal lengths and the number of faces with different areas are smaller for structures created according to the first method of subdivision. The comparison of the resulting element quantities of two methods shows that the largest differences appear between the domes with a larger number of struts (up to 67%). Here, the analysis might help the designer reach a final decision on the better choice of topology, in particular, when this aspect is combined with other design goals, such as efficiency, economy, utility, and elegance in the design of the structure and the cover of large areas.

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Section: Introductionmentioning

confidence: 99%

Two subdivision methods based on the regular octahedron for single- and double-layer spherical geodesic domes

Pilarska

2020

International Journal of Space Structures

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“…Table 5 contains the results of the mass, maximum stress, and optimization time in the ten applied design processes. It seems, also in this case, that the mass is decreasing while the optimization time is increasing as we are going from design process (1) to (10).…”

Section: Mbb-beammentioning

confidence: 80%

“…Initial It can be observed that the mass of the structure is decreasing as we are following the processes from ( 1) to (10), while the time is increasing. On the other hand, there is not a clear pattern in the maximum stress results.…”

Section: Parametermentioning

confidence: 99%

“…A redesign based on the result of process (8) was conducted in process (9). Finally, a parametrization of the geometry and a new round of a size optimization was implemented in process (10). Figure 13 illustrates the design solutions of the processes in this workflow.…”

Section: Simultaneous Parametric and Topology Optimization Of A Hollo...mentioning

confidence: 99%

“…A plethora of research papers focused on either development of new approaches or improvement of the existing optimization methods [7,8]. However, there is limited literature that compares the aforementioned optimization methods or possible combinations of them with respect to their results and optimization time [9,10]. The identification of the ideal design process is challenging.…”

Section: Introductionmentioning

confidence: 99%

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Topology and Parametric Optimization-Based Design Processes for Lightweight Structures

Tyflopoulos

Steinert

2020

Applied Sciences

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Topology and Parametric Optimization are two of the most implemented material optimization approaches. However, it is not clear in the literature which optimization procedure, or possible combination of them, can lead to the best results based on material reduction and optimization time. In this paper, a quantitative comparison of different topology and parametric optimization design processes is conducted using three benchmark examples: A Hollow Plate, an L-Bracket, and a Messerschmitt–Bölkow–Blohm Beam (MBB-Beam). Ten different design processes that were developed in each case study resulted in 30 simulations in total. The design processes were clustered in three main design workflows: The Topology Optimization, the Parametric Optimization, and the Simultaneous Parametric and Topology Optimization. Their results were compared with respect to mass, stress, and time. The Simultaneous Parametric and Topology Optimization approach gave the lightest design solutions without compromising their initial strength but also increased the optimization time. The findings of this paper will help the designers in the pursuit of lightweight structures and will create the basis for the identification of the ideal material optimization procedure.

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A stress-based topology optimization method by a Voronoi tessellation Additive Manufacturing oriented

Cucinotta

Raffaele

Salmeri

2019

Int J Adv Manuf Technol

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A Quantitative Comparison Between Size, Shape, Topology and Simultaneous Optimization for Truss Structures

Cited by 13 publications

References 24 publications

Two subdivision methods based on the regular octahedron for single- and double-layer spherical geodesic domes

Two subdivision methods based on the regular octahedron for single- and double-layer spherical geodesic domes

Topology and Parametric Optimization-Based Design Processes for Lightweight Structures

A stress-based topology optimization method by a Voronoi tessellation Additive Manufacturing oriented

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