Selective Volume Fusing Method for Cellular Structure Integration

Vongbunyong, Supachai; Kara, Sami

doi:10.1007/978-981-10-0471-1_35

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…FRep was considered a possible technique for functionally graded material modelling in [22] and [23]. [24], [25] and [26] show how to fill a model with a cellular structure based on a chosen pattern, but again the models have to be converted from FRep to STL to handle 3D printing tasks. Recently, FRep was used for 3D printing purposes in [7].…”

Section: Applications Of Function Representation In Additive Manufacturingmentioning

confidence: 99%

Efficient contouring of functionally represented objects for additive manufacturing

Popov

Maltsev

Fryazinov

et al. 2020

Computer-Aided Design

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Functionally (implicitly) defined 3D objects allow us to quite easily model parts with complex topology such as lattices and organic-like structures with a high level of flexibility. Previous works in this area are based on the direct generation of CNC programs for the 3D printing of these objects and are backed by the growing support for this input format from hardware manufacturers. Efficient contouring of functionally defined models, however, is not an easy task.In this paper, we develop an algorithm for contour extraction of implicitly defined objects for direct additive manufacturing (AM). By comparing various adaptive and exhaustive (non-adaptive) methods of the function representation contouring for AM (FRepCAM), we make a set of recommendations for its usage depending on the specific resolution of the printer. In particular, we use a novel criterion based on affine arithmetic to maintain efficiency while preserving the robustness of the contouring process. The techniques mentioned were evaluated for algebraic and non-algebraic solids and heterogeneous models under a resolution that is comparable with that of current AM technology. The results show that the chosen adaptation criteria allow us to efficiently obtain a contour for complex models and generally outperform those of traditional algorithms based on exhaustive enumeration, especially for high-resolution contouring. In addition, the results present proof of the printability of implicitly defined objects with different 3D printing techniques.

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