Medial axis tree—an internal supporting structure for 3D printing

Zhang, Xiaolong; Xia, Yang; Wang, Jiaye; Yang, Zhouwang; Tu, Changhe; Wang, Wenping

doi:10.1016/j.cagd.2015.03.012

Cited by 90 publications

(46 citation statements)

References 7 publications

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“…Second, our adaptive hollowing algorithm is mainly suitable for the model whose internal space needs to be reused. If users want to generate an object with light weight structures inside, our algorithm is not as good as [36,14,42].…”

Section: Discussionmentioning

confidence: 98%

“…Similarly, the work by Zhang et al [42] uses medial axis tree instead of frame structures, which can naturally transfer the external loads from different directions to the inner core structure. Different from these methods, Lu et al [14] and e Sá et al [24] divide the interior of the model with honeycomb-cell structure which is known to be of minimal material cost, while providing strength in tension.…”

Section: Related Workmentioning

confidence: 99%

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Cross section-based hollowing and structural enhancement

Wang

Qian

et al. 2017

Vis Comput

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Recently, 3D printing has become a powerful tool for personal fabrication. However, the price of some materials are still high which limits its applications in home users. To optimize the volume of the model, while not largely affecting the strength of the objects, researchers propose algorithms to divide the model with different kind of light weight structures, such as frame structure, honeycomb-cell structure, truss structure, medial axis tree, etc. However, these algorithms are not suitable for the model whose internal space needs to be reused. In addition, the structural strength and static stability of the models, obtained with modern 3D model acquirement methods, are not guaranteed. In consequence, some models are too fragile to print, and cannot be survived in daily usage, handling, and transportation, or cannot stand in a stable.To handle the mentioned problems, an algorithm system is proposed based on cross sections in this work. The structural weak cross sections are enhanced and structural strong cross sections are adaptively hollowed to meet a given structural strength, static stability, printability, etc., while the material usage is minimized. The proposed algorithm system has been tested on several typical 3D models. The experimental results demonstrate the effectiveness and practicability of our system.

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Section: Discussionmentioning

confidence: 98%

Section: Related Workmentioning

confidence: 99%

Cross section-based hollowing and structural enhancement

Wang

Qian

et al. 2017

Vis Comput

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“…In the future, the medial axis will be applied to the hexahedral finite element mesh generation [20]. Since the medial axis has been verified for plane, it can also generate the high-quality hexahedral mesh by becoming the medial surface in 3D space to equally divide the space [21].…”

Section: Resultsmentioning

confidence: 99%

Generation Method and Application of Product-Oriented Medial Axis

Peng

Wang

et al. 2016

Cybernetics and Information Technologies

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“…Software such as Meshmixer [1] and Autodesk 123D [2] provide users with intuitive modeling software for 3D printing. However, because of lacking of design experience and knowledge of mechanics, the result would bring about the strength [3][4][5], supplies [6][7][8][9] and stability [10][11] problems. When creating a 3D object for printing, physical properties, including density, mass, center of mass and moment of inertia, are not considering usually.…”

Section: Introductionmentioning

confidence: 99%

Density Aware Internal Supporting Structure Modeling of 3D Printed Objects

Li¹,

Dai²,

Jiang

et al. 2015

2015 International Conference on Virtual Reality and Visualization (ICVRV)

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Physically based modeling is a novel theory for 3D printing; it can use a single material to control the physical properties, such as center of mass, total mass and moment of inertia. In this paper, we present a density variable shape modeling method to meet the required strength of 3D printed objects. We estimate a continuous density distribution that satisfies the detected stress distribution of the 3D objects, which is based on the cross-sectional stress analysis method. We then use a pure mathematical 3D implicit function to create a gradational porous structure to represent this density distribution. With our technique, 3D printed objects that have desired sound structures can be fabricated. Meanwhile the material consumption can be reduced significantly.

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Medial axis tree—an internal supporting structure for 3D printing

Cited by 90 publications

References 7 publications

Cross section-based hollowing and structural enhancement

Cross section-based hollowing and structural enhancement

Generation Method and Application of Product-Oriented Medial Axis

Density Aware Internal Supporting Structure Modeling of 3D Printed Objects

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