Three-dimensional image-based numerical homogenisation using octree meshes

Saputra, Albert A.; Eisenträger, Sascha; Gravenkamp, Hauke; Song, Chongmin

doi:10.1016/j.compstruc.2020.106263

Cited by 19 publications

(9 citation statements)

References 62 publications

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“…In the realization of a real 3D scene, preparing real 3D scene data is the first step to create a real 3D scene presentation. Based on prepared data, a real 3D image was created on the website, which can be browsed on the Internet using a web browser [25][26][27]. During the browsing process, the data and scene construction were adjusted according to the browsing results and effects to achieve the best results.…”

Section: Analysis Resultsmentioning

confidence: 99%

Applications of 3D Image Using Internet of Things in the Exhibition of Classical Architecture Art Style

Xie

Wen

Deng

2021

Mobile Information Systems

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Classical architecture is an architectural, cultural heritage with specific historical value. It is also a city with historical and cultural heritage and even a testimony of the profound historical culture of a country. Therefore, urbanization is unavoidable, and it directly influences historical buildings. This study aims to combine the three-dimensional image techniques and the Internet of Things (IoT) technology to research the development of classical architectural artistic style. This article presents the acquisition equipment, methods, precautions, and data processing of real-life 3D image data of the classical architectural heritage. We realized the online publishing of real-world 3D services of classical architectural heritage through the real-world 3D display system developed through the Internet of Things and mobile terminals. The model was verified through simulation tests. The combination of image processing techniques and analysis methods such as simulated annealing improved the accuracy of the prediction model. The proposed model can provide data support for policy formulation, technical intervention, and targeted field investigation on architectural heritage by screening research objects.

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Section: Analysis Resultsmentioning

confidence: 99%

Applications of 3D Image Using Internet of Things in the Exhibition of Classical Architecture Art Style

Xie

Wen

Deng

2021

Mobile Information Systems

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“…Only recently, some methods like [9] adapted numerical methods to work directly with hanging nodes. The above algorithm was extended to 3D in [20], however, this time, the Octree mesh must be balanced. This property (also sometimes referred as to 1-irregular) means that the difference in the Refinement Level (RL) according to its neighbors cannot be greater than one.…”

Section: State Of the Artmentioning

confidence: 99%

Fast Quadtree/Octree adaptive meshing and re-meshing with linear mixed elements

Jaillet

Lobos

2021

Engineering with Computers

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In this paper, we will focus on adaptive meshing and re-meshing. We present an original approach, based on Quadtree and Octree, to construct the initial mesh and refine it using mixed-elements. We propose a fast algorithm using a determined set of Patterns to handle transitions between fine and coarse regions, and to closely approximate surface boundaries. An optimized structure for storing edges permits to efficiently manage neighbor information, dramatically reducing the balancing time. Results, both in 2D and 3D, exhibit the multiple possibilities for local refinements. Comparisons in terms of accuracy, number of elements in the resulting mesh, and computation time, clearly position our method as a competitive alternative to generate a conform adapted mesh, which can be used with standard numerical methods.Keywords Mesh reconstruction • Adaptive refinement • Mixed-element mesh • Balanced Quadtree/Octree • Edge data structure Article Highlights -A fast meshing/re-meshing algorithm using deterministic patterns, suited for numerical simulation -Mixed-elements are used to produce conform transitions and manage domain boundaries -An optimized edge data structure for neighbor search is proposed to accelerate balancing of Quadtree and Octree meshes

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“…Their combination provides a promising technique for integrating geometric models and numerical analysis in a fully automatic manner. In recent years, octree algorithms have been successfully employed in the SBFEM to generate polyhedral meshes based on digital images [28,66] and STL models [29]. They are extremely simple and efficient in meshing complex geometries such as concrete and sculptures.…”

Section: A Cube With a Spherical Inclusionmentioning

confidence: 99%

“…The internal states of the asphalt mixtures can be obtained from high-resolution X-CT scans and processed by digital image processing techniques [68,67]. The microstructure can be reconstructed by octree meshes based on the digital images in a fully automatic manner [66,28]. A porous asphalt concrete specimen is illustrated in Fig.…”

Section: Analysis Of a Porous Asphalt Concrete Specimenmentioning

confidence: 99%