4,511 Hits in 4.2 sec

Solving the Problem of Packing Objects of Complex Geometric Shape into a Container of Arbitrary Dimension

Vladislav Chekanin
2020 Proceedings of the 30th International Conference on Computer Graphics and Machine Vision (GraphiCon 2020). Part 2  
Examples of packing sets of orthogonal polyhedrons and voxelized objects into containers of various geometric shapes are given.  ...  The effectiveness of application of all proposed algorithms is presented on an example of solving practical problems of rational placement of objects produced by 3D printing technology.  ...  leading manufacturers of equipment for 3D printing [26] .  ... 
doi:10.51130/graphicon-2020-2-3-50 fatcat:mgpn3bgwfjcbfc7ntoski5kldi

Genetic algorithms for the scheduling in additive manufacturing

S. Castillo-Rivera, J. De Antón, R. Del Olmo, J. Pajares, A. López-Paredes
2020 International Journal of Production Management and Engineering  
<p>Genetic Algorithms (GAs) are introduced to tackle the packing problem. The scheduling in Additive Manufacturing (AM) is also dealt with to set up a managed market, called "Lonja3D".  ...  Acknowledgements This research has been partially financed by the project: "Lonja de Impresión 3D para la Industria 4.0 y la Empresa Digital (LONJA3D)" funded by the Regional Government of Castile and  ...  According to the items to be placed, two main groups can be distinguished, those which present regular or irregular shapes.  ... 
doi:10.4995/ijpme.2020.12173 fatcat:zmwnwus42jdsnegmrdfnurtvc4

Manufacturable pattern collage along a boundary

Minghai Chen, Fan Xu, Lin Lu
2019 Computational Visual Media  
We represent the packing space by a pipe-like closed shape along the boundary and use ellipses as packing elements for computing an initial layout of the patterns.  ...  To demonstrate the effectiveness of our method, we show results fabricated by 3D printing and laser cutting.  ...  Acknowledgements We thank all anonymous reviewers for their valuable comments and constructive suggestions. This work was supported by grants from National Natural  ... 
doi:10.1007/s41095-019-0143-2 fatcat:7kpemgv56bhx5j4zogzm3c5sra

Level-set-based partitioning and packing optimization of a printable model

Miaojun Yao, Zhili Chen, Linjie Luo, Rui Wang, Huamin Wang
2015 ACM Transactions on Graphics  
a) Optimized partitioning (b) Optimized packing (c) Assembled object (d) Packed object Figure 1: The octopus example.  ...  Our experiment shows that the system can generate quality partitioning of various 3D models for space saving and fast production purposes.  ...  We also thank ACCAD at OSU, Nvidia and Adobe for additional support through funding and equipment.  ... 
doi:10.1145/2816795.2818064 fatcat:gwt5w7u2xfdc3b2ht2r4gad2ky

Fabricable tile decors

Weikai Chen, Yuexin Ma, Sylvain Lefebvre, Shiqing Xin, Jonàs Martínez, wenping wang
2017 ACM Transactions on Graphics  
ACKNOWLEDGMENT We would like to thank Lei Chu for photographing the printouts and anonymous reviewers for their insightful comments.  ...  This work is supported by Hong Kong RGC (GRF 17208214), ERC grant Shape-Forge (StG-2012-307877) and NSFC (61772016).  ...  to fold patches into shape. 3D printing large objects.  ... 
doi:10.1145/3130800.3130817 fatcat:j2wle3aibjdxpgivb42aekvmnm

Multimaterial Microfluidic 3D Printing of Textured Composites with Liquid Inclusions

Xiying Li, Jia Ming Zhang, Xin Yi, Zhongyi Huang, Pengyu Lv, Huiling Duan
2018 Advanced Science  
The proposed multimaterial microfluidic 3D printing framework could be broadly applicable for structural composites and soft robotic devices.  ...  By combining the direct ink writing and microfluidics, a multimaterial 3D printing system for fabricating textured composites with liquid inclusions of programmable spatial distribution and compositions  ...  Acknowledgements Financial support for this work was provided by the National Natural Science  ... 
doi:10.1002/advs.201800730 pmid:30775221 pmcid:PMC6364488 fatcat:rzrsnqnpdnat3ld3etay3h7sa4


Daniel Saakes, Thomas Cambazard, Jun Mitani, Takeo Igarashi
2013 Proceedings of the 26th annual ACM symposium on User interface software and technology - UIST '13  
In this paper, we introduce PacCAM, a system for packing 2D parts within a given source material for fabrication using 2D cutting machines.  ...  Our solution combines computer vision to capture the source material shape with a user interface that incorporates 2D rigid body simulation and snapping.  ...  ACKNOWLEDGEMENTS We thank the anonymous reviewers for their suggestions and ideas. We also thank Masahiro Furukawa for arranging participants for the user study.  ... 
doi:10.1145/2501988.2501990 dblp:conf/uist/SaakesCMI13 fatcat:2cj3soo24zg5rdjw4n6sxgpyla

Particle Seeded Grains to Identify Highly Irregular Solid Boundaries and Simplify PIV Measurements

William Basham, Ralph Budwig, Daniele Tonina
2019 Frontiers in Earth Science  
However, applying this method, with a mask of the correct shape and at the correct location, is difficult, time consuming, and would be potentially unfeasible for packed bed of irregular shaped grains.  ...  To address this problem, we present the proof-of-concept of a novel approach to delineate highly irregular granular particles (grains) of varying size and shape and improve PIV processing for flows around  ...  ACKNOWLEDGMENTS We thank the three reviewers and the Associate Editor Theresa Plume for their valuable and insightful comments, which improve our contribution.  ... 
doi:10.3389/feart.2019.00195 fatcat:z5m36fblqvd37lras2xaqgivi4

3D-Printed Stationary Phases with Ordered Morphology: State of the Art and Future Development in Liquid Chromatography

Christopher Salmean, Simone Dimartino
2018 Chromatographia  
The recent explosion of additive manufacturing methods (AM, aka 3D printing) has opened a new paradigm for the microfabrication of precisely ordered three-dimensional packed beds.  ...  ., (i) bed homogeneity, (ii) particle shape, and (iii) bed configuration. The review will then progress to novel complex formats for chromatography cartridges enabled by the 3D printing technology.  ...  For example, while chromatographers are interested in porous materials, the 3D printing industry tends to produce "dense parts", common terminology in the 3D printing community to describe objects with  ... 
doi:10.1007/s10337-018-3671-5 fatcat:s4jmbahp3ve6bckih7yn3chxpm

SCARLET-1.0: SpheriCal Approximation for viRtuaL aggrEgaTes

Eduardo Rossi, Costanza Bonadonna
2021 Geoscientific Model Development  
All the 3D shapes are described using the Standard Triangulation Language (STL) format, which is the current standard for 3D printing.  ...  The main outcome of the code is the virtual representation of the object, its size, porosity, density, and the associated STL file. In addition, the object can be potentially 3D printed.  ...  We would like to thank Marco Pistolesi and Raffaello Cioni for their help in reconstructing the grain size distribution of the aggregate EJ15.  ... 
doi:10.5194/gmd-14-4379-2021 fatcat:eaawvjc4mne63ii5no2gybvmhm

Automated packing systems-a systems engineering approach

P.F. Whelan, B.G. Batchelor
1996 IEEE transactions on systems, man and cybernetics. Part A. Systems and humans  
An important group of applications of this type is found in the automated packing and nesting of arbitrary shapes.  ...  The aim of this work has been to produce an efficient packing strategy that is flexible enough for a wide variety of industrial uses and which can be implemented using fast moderately priced hardware.  ...  This modification consists of packing each shape, taking the robot foot-print into account, but removing the foot-print from the scene prior to the application of the next shape.  ... 
doi:10.1109/3468.531901 fatcat:vgrywqebezetnoazdgt5gtlxli

A hybrid approach of simulation and metaheuristic for the polyhedra packing problem

Germán Fernando Pantoja-Benavides, David Álvarez-Martínez
2022 International Journal of Industrial Engineering Computations  
This document presents a simulation-based method for the polyhedra packing problem (PPP).  ...  This problem refers to packing a set of irregular polyhedra (convex and concave) into a cuboid with the objective of minimizing the cuboid's volume, considering non-overlapping and containment constraints  ...  Furthermore, applications of C&PP in 3D with irregular items happen in scenarios where the volume is limited and some components have to be tightly packed; for example, in automobiles' engineering design  ... 
doi:10.5267/j.ijiec.2021.7.003 fatcat:pgknhoayk5e7fik6upksr43w6m

Optimal layout of ellipses and its application for additive manufacturing

Tatiana Romanova, Yuri Stoyan, Alexandr Pankratov, Igor Litvinchev, Konstantin Avramov, Marina Chernobryvko, Igor Yanchevskyi, Irina Mozgova, Julia Bennell
2019 International Journal of Production Research  
The paper studies a layout problem of variable number of ellipses with variable sizes placed into an arbitrary disconnected polygonal domain with maximum packing factor.  ...  This algorithm can be used in the design of parts for «support-free» additive manufacturing, taking into account the conditions for its static/ dynamic strength.  ...  Conclusions A new optimization layout problem for ellipses is considered in the study. Our container is an arbitrary disconnected polygonal area.  ... 
doi:10.1080/00207543.2019.1697836 fatcat:szvk2k7pqnh6hpfnekztwwpfr4


Lin Lu, Baoquan Chen, Andrei Sharf, Haisen Zhao, Yuan Wei, Qingnan Fan, Xuelin Chen, Yann Savoye, Changhe Tu, Daniel Cohen-Or
2014 ACM Transactions on Graphics  
Thus, our system allows to build-to-last 3D printed objects with large control over their strength-to-weight ratio and easily model various interior structures.  ...  The 3D printed hollowed solid is built-to-last using our interior structure (right).  ...  Acknowledgements We thank the reviewers for their valuable suggestions, Qiannan Li for video editing, and Maggie Chen for video narration.  ... 
doi:10.1145/2601097.2601168 fatcat:pxe3gubkzrb7rjal7yvrteyary

Review of Polymeric Materials in 4D Printing Biomedical Applications

Ming-You Shie, Yu-Fang Shen, Suryani Dyah Astuti, Alvin Kai-Xing Lee, Shu-Hsien Lin, Ni Luh Bella Dwijaksara, Yi-Wen Chen
2019 Polymers  
Simply put, 4D printing is a continuum of 3D printing technology that is now able to print objects which change over time.  ...  The 3D printed object can be assembled or transformed into intended designs by applying certain conditions or forms of stimulation such as temperature, pressure, humidity, pH, wind, or light.  ...  Shape-Shifting Behaviors The main characteristic of 4D printing lies in the shape-shifting capabilities of a 3D printed static object.  ... 
doi:10.3390/polym11111864 pmid:31726652 pmcid:PMC6918275 fatcat:hxwnufkiobfgplqnsb6saohdyi
« Previous Showing results 1 — 15 out of 4,511 results