scholarly journals Multilevel Design for the Interior of 3D Fabrications

Symmetry ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1029 ◽  
Author(s):  
Kanygul Chynybekova ◽  
Soo-Mi Choi
Keyword(s):  
3D Model ◽  
Scaling Parameter ◽  
Input Model ◽  
Application Requirements ◽  
Symmetric Patterns

This article presents a multilevel design for infill patterns. The method partitions an input model into subareas and each subarea are applied with different scales of infill patterns. The number of subareas can be decided by users. For each subarea, there are different values of the scaling parameter that determines the number of columns and rows of pattern elements, which is useful to change the weight and strength of a certain area by user demands. Subareas can be symmetric or asymmetric to each other depending on the geometry of a 3D model and the application requirements. In each subarea, there are generated symmetric patterns. The proposed method is also applicable to combining different patterns. The aim of our work is to create lightweight 3D fabrications with lighter interior structures to minimize printing materials and supplementary to strengthen thin parts of objects. Our approach allows for the composition of sparse and dense distributions of patterns of interior 3D fabrications in an efficient way so users can fabricate their own 3D designs.

scholarly journals Research on relative orientation method of oblique aerial photography based on basic matrix

2021 ◽  
Vol 2093 (1) ◽  
pp. 012025
Author(s):  
Zehong Wang ◽  
Long Xiao
Keyword(s):  
Aerial Photography ◽  
3D Model ◽  
Relative Orientation ◽  
Stereo Image ◽  
Control Points ◽  
Subsequent Application ◽  
Orientation Method ◽  
Application Requirements ◽  
3D Software ◽  
Rectification Process

Abstract After the oblique aerial photography technology is used to collect the stereo image, it is necessary to use the relative orientation method to check the image parameters. After the rectification process is completed, the 3D software is used to draw the 3D model to meet the subsequent application requirements. The author of this paper analyzes the difficulty of the matching and aerial photography, including affine transformation cannot successful transformation, influence there covered phenomenon and characteristic finishing is difficult, the combination of fundamental matrix tilt aerial photography as a method of relative orientation, through the study of oblique aerial photography based matrix as precision control points, its aim is to continuously optimize tilt aerial photography as the content, improve the use value of collation results.

scholarly journals RESEARCH ON QUALITY FRAMEWORK OF REAL SCENE 3D MODEL BASED ON OBLIQUE PHOTOGRAMMETRY

2021 ◽  
Vol XLIII-B3-2021 ◽  
pp. 791-796
Author(s):  
Y. M. Xu ◽  
J. X. Zhang ◽  
H. T. Zhao ◽  
C. X. Chen ◽  
W. J. Mao
Keyword(s):  
Production Technology ◽  
3D Model ◽  
Quality Model ◽  
Model Quality ◽  
Model Based ◽  
Real Scene ◽  
Quality Framework ◽  
Application Requirements ◽  
Technology Level

Abstract. With the development of real 3D model production technology and the expansion of application field, people pay more and more attention to the quality of real 3D model. However, how to measure the quality of today's real 3D model have been bothering its producers and users. In this paper, we analysed the quality model of real scene 3D model based on oblique photography from the perspective of the third party. Our analysis is guided by the application requirements of real scene 3D model, combined with the existing production technology level. Our analysis is guided by the application requirements of real scene 3D model, combined with the existing production technology level, we established the quality framework of real scene 3D model. This quality framework of real 3D model includes nine quality elements. Using this quality framework, we made a quality evaluation test in Yingjing County, Sichuan Provence. The test results show that the quality framework can fully reflect the quality of the real scene 3D model. The quality framework of real scene 3D model established in this paper solves the problem that it is difficult to evaluate the quality of real scene 3D model. The quality framework provides a basis for comprehensive and objective evaluation of real scene 3D model quality.

On the pressure dependence of the thermodynamical scaling exponent γ

Soft Matter ◽  
2020 ◽  
Vol 16 (19) ◽  
pp. 4625-4631 ◽  
Author(s):  
R. Casalini ◽  
T. C. Ransom
Keyword(s):  
Pressure Dependence ◽  
Scaling Exponent ◽  
Scaling Parameter

In materials with a constant scaling parameter γS, the Isomorph γI is found to vary with pressure, demonstrating γS ≠ γI.

Does the mood-as-input model explain task persistence when goals are activated automatically?

2008 ◽  
Author(s):  
P. A. Karsdorp ◽  
S. Ranson ◽  
J. W. S. Vlaeyen
Keyword(s):  
Task Persistence ◽  
Input Model

Generation of a 3D model to better mimic NAFLD in vitro

2016 ◽  
Vol 54 (12) ◽  
pp. 1343-1404
Author(s):  
LS Spitzhorn ◽  
MA Kawala ◽  
J Adjaye
Keyword(s):  
3D Model

A Quasi-3D Model for Suspended Sediment Transport by Currents and Waves.

1991 ◽  
Author(s):  
Irene Katopodi ◽  
Jan S. Ribberink
Keyword(s):  
Sediment Transport ◽  
Suspended Sediment ◽  
3D Model ◽  
Suspended Sediment Transport

Pembuatan 3D Model Denah Panggung Menggunakan Teknik Subdivison Modeling

2018 ◽  
Vol 2 (1) ◽  
pp. 9-14
Author(s):  
Ariswan Chandra Wiratirta ◽  
Keyword(s):  
3D Model

Evaluation of geometrical benchmark artifacts containing multiple overhang lengths fabricated using material extrusion technique

2020 ◽  
Vol 14 (3) ◽  
pp. 7296-7308
Author(s):  
Siti Nur Humaira Mazlan ◽  
Aini Zuhra Abdul Kadir ◽  
N. H. A. Ngadiman ◽  
M.R. Alkahari
Keyword(s):  
3D Model ◽  
Laser Scanner ◽  
Dimensional Accuracy ◽  
Fused Deposition Modelling ◽  
Layer By Layer ◽  
Fused Deposition ◽  
Layer Technique ◽  
Subtractive Manufacturing ◽  
Manufacturing Features ◽  
Layer Problem

Fused deposition modelling (FDM) is a process of joining materials based on material entrusion technique to produce objects from 3D model using layer-by-layer technique as opposed to subtractive manufacturing. However, many challenges arise in the FDM-printed part such as warping, first layer problem and elephant food that was led to an error in dimensional accuracy of the printed parts especially for the overhanging parts. Hence, in order to investigate the manufacturability of the FDM printed part, various geometrical and manufacturing features were developed using the benchmarking artifacts. Therefore, in this study, new benchmarking artifacts containing multiple overhang lengths were proposed. After the benchmarking artifacts were developed, each of the features were inspected using 3D laser scanner to measure the dimensional accuracy and tolerances. Based on 3D scanned parts, 80% of the fabricated parts were fabricated within ±0.5 mm of dimensional accuracy as compared with the CAD data. In addition, the multiple overhang lengths were also successfully fabricated with a very significant of filament sagging observed.

3D MODEL OF THE ESTABLISHMENT OF A PLASMA ARC BETWEEN TWO AERIAL METALLIC ELECTRODES

2003 ◽  
Vol 7 (1) ◽  
pp. 65-70
Author(s):  
B. Barthelemy ◽  
C. Girold ◽  
C. Delalondre ◽  
B. Paya ◽  
J. M. Baronnet
Keyword(s):  
3D Model ◽  
Plasma Arc ◽  
Metallic Electrodes
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