A three dimensional modeling method for spherical open cell aluminum foams based on spherical core stratification algorithm

Abstract In this study, the use of three-dimensional modeling method was tested in taking some body measurements in camels with a practical method and was compared with other measurement methods. As the animal material of the study, 12 single humped dromedary female camels and 14 double humped Camelus dromedarius X Camelus bactrianus: F1 male camels, totally 26 camels, were used in three camel farms in Incirliova district of Aydın province. The body measurements taken from each animal by using different three methods, namely by Manuel Method (MM), by Photography Method (PM), and by Three Dimensional Modeling Method (3D) were the Cidago Height (CH), the Back Height (BH), the Rump Height (RH), the Body Length (BL), the Brisket Height (BRH), the Abdominal Height (AH), the Shoulder Width (SW) and the Rump Width (RW) and these values were compared with each other. As a result of this study, the mean values of MM and 3D measurement values were very close to each other and the difference between them was found to be statistically insignificant. (P<0.05). The difference between the means of PM and MM/3D measurement values was found to be significant. (P <0.05). In the measurements taken by MM, 3D, PM methods in male camels, the values obtained by MM and 3D methods for CH, BH, RH, BRH, AH, BL, and SW were very close to each other and the differences between them were found insignificant statistically (p < 0.05). On the determined regression graph, a linear was found between MM and 3D measurement values. As a result of this study, it has been determined that the 3D modeling method can be used as a remote and more practical method in determining the morphological features of large-scale animals such as camels more reliably, more easily and more practically.

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Research on 3D Modeling Method Based on Hybrid Octree Structure

The Open Electrical & Electronic Engineering Journal ◽

10.2174/1874129001408010323 ◽

2014 ◽

Vol 8 (1) ◽

pp. 323-329 ◽

Cited By ~ 2

Author(s):

Wang Yujian ◽

Tan Shaowei ◽

Dong Weiwei ◽

Jing Wenpeng

Keyword(s):

Data Model ◽

Three Dimensional ◽

Hash Table ◽

Structure Type ◽

Modeling Method ◽

Prefix Code ◽

Mesh Surface ◽

Three Dimensional Modeling ◽

Dimensional Modeling ◽

Hybrid Data

With studying deeply of the three-dimensional modeling method, this paper proposed a hybrid data model which based on Octree,the four fork tree and NURBS. The characteristic of fast convergence of Octree is used to segment the 3D entity. Describe the irregular surface of entity by NURBS, and restructure the local mesh surface. The model uses the mixture data structure of Octree and four fork tree to restructure mesh surface gradually. The storage structure is the Octree structure type; establish Hash table based on octal prefix code. Finally, an experimental model system is designed by using OpenGL. The feasibility and effectiveness of the algorithm has been verified.

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MRI-Based Three Dimensional Modeling of Stenting Procedure

Volume 2: Biomedical and Biotechnology Engineering; Nanoengineering for Medicine and Biology ◽

10.1115/imece2011-65583 ◽

2011 ◽

Author(s):

Shijia Zhao ◽

Linxia Gu ◽

Shailesh Ganpule

Keyword(s):

Computational Simulation ◽

Three Dimensional ◽

Patient Specific ◽

Open Cell ◽

Mechanical Responses ◽

Three Dimensional Modeling ◽

Dimensional Modeling ◽

Closed Cell ◽

Stenosed Artery ◽

3D Geometry

In this work, the stents-induced mechanical responses of a patient-specific common carotid artery (CCA) were evaluated through computational simulation. The realistic 3D geometry of the artery was constructed from the MRI data. Two types of self-expanding stent design (open-cell and closed-cell) were used to restore the blood flow inside the 60% stenosed artery. The resulting lumen gain, dog-boning effect and arterial stress were estimated. Results suggested that the artery was straightened after stent implantation, and the open-cell design led to bigger lumen gain, better conformability, and less dog-boning effect. This work may facilitate the development of new stent designs.

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