Rendering 3D Solid Model

2015 ◽  
pp. 309-316 ◽  
Author(s):  
Cheng-Wei Huang ◽  
Ran-Zan Wang ◽  
Shang-Kuan Chen ◽  
Wen-Pin Fang
Keyword(s):  
Solid Model ◽  
3D Solid

scholarly journals TOWARDS A DIGITAL TWIN OF A STORAGE TANK USING LASER SCAN DATA

2021 ◽  
Vol XLVI-4/W4-2021 ◽  
pp. 119-124
Author(s):  
L. Truong-Hong ◽  
N. Nguyen ◽  
R. Lindenbergh ◽  
P. Fisk ◽  
T. Huynh
Keyword(s):  
Data Storage ◽  
Storage Tank ◽  
Laser Scanning ◽  
Point Clouds ◽  
Solid Model ◽  
Shell Wall ◽  
Digital Twin ◽  
Oil Storage ◽  
Oil Storage Tank ◽  
3D Solid

Abstract. This paper proposes a methodology to automatically extract components of an oil storage tank from terrestrial laser scanning (TLS) point clouds, and subsequently to create a three-dimensional (3D) solid model of the tank for numerical simulation. The proposed method is integrated into a smart analysis layer of a digital twin platform consisting of three main layers: (1) smart analysis, (2) data storage, and (3) visualisation and user interaction. In this proposed method, primary components of the tank were automatically extracted in a consecutive order from a shell wall to roof and floor. Voxel-based RANSAC is employed to extract voxels containing point clouds of the shell wall, while a valley-peak-valley pattern based on kernel density estimation is implemented to remove outlier points within voxels representing to the shell wall and re-extract data points within voxels adjoined to the shell wall. Moreover, octree-based region growing is employed to extract a roof and floor from remaining point clouds. An experimental showed that the proposed framework successfully extracted all primary components of the tank and created a 3D solid model of the tank automatically. Resulting point clouds of the shell wall were directly used for estimating deformation and a 3D solid model was imported into finite element analysis (FEA) software to assess the tank in terms of stress-strain. The demonstration shows that TLS point clouds can play an important role in developing the digital twin of the oil storage tank.

Automatic Recognition of Multi-Axis Machining Features Based on Machining Process from 3D Solid Model

2015 ◽  
Vol 789-790 ◽  
pp. 873-877 ◽  
Author(s):  
Phung Xuan Lan ◽  
Hoang Vinh Sinh
Keyword(s):  
Automatic Recognition ◽  
Machining Process ◽  
Solid Model ◽  
Machining Features ◽  
Rule Based ◽  
Machining Feature ◽  
Complex Design ◽  
3D Solid ◽  
The Relationship

This paper presents an effective rule-based method for extracting and recognizing the machining features from 3D solid model. The machining feature is automatically recognized while considering the relationship between machining feature and machining process. This proposed method is capable of recognizing not only prismatic machining features but also multi-axis machining features from many kinds of complex design features in both protrusion and depression. It also succeeds in recognizing various types of interaction in a uniform way. The capability of the proposed method is demonstrated in one specific case study.

scholarly journals Studying and Generation of Saffron Flower's 3D Solid Model

2015 ◽  
Vol 19 ◽  
pp. 62-69 ◽  
Author(s):  
Mojtaba Zeraatkar ◽  
Khalil Khalili ◽  
Abolfazl Foorginejad
Keyword(s):  
Solid Model ◽  
3D Solid

Responses of Aluminium Alloy Pistons under Mechanical and Thermal Loads

2019 ◽  
Vol 969 ◽  
pp. 231-236
Author(s):  
Chandan Kumar ◽  
Nilamber Kumar Singh
Keyword(s):  
Thermal Analysis ◽  
Combustion Engine ◽  
Topological Optimization ◽  
Solid Model ◽  
Thermal Loads ◽  
Transient Thermal Analysis ◽  
Critical Areas ◽  
Temperature Distributions ◽  
Transient Thermal ◽  
3D Solid

A comparative study of three different aluminium alloys, Al2618, Al4032 and Al6061 made internal combustion engine pistons is done on their responses under mechanical and thermal loads using finite element methods. In this study, a 3D solid model of piston is created in CATIA and the simulations of the static structural analysis, steady-state thermal analysis and transient thermal analysis are carried out in ANSYS. Stress and temperature distributions on critical areas of piston are pointed out for appropriate modification in piston design. The temperature and heat flux variations with time are presented in transient thermal analysis. Taguchi method and topological optimization are applied to optimize the process parameters and to select the appropriate material for the piston.

A New Approach to Reconstructing 3D Solid from the Two 2D Views Based on AutoCAD

2011 ◽  
Vol 88-89 ◽  
pp. 697-702
Author(s):  
Hong Sheng Zhao ◽  
Ya Xian Wu ◽  
Yun Zhen Wu
Keyword(s):  
Research Work ◽  
Special Kind ◽  
Basic Knowledge ◽  
Solid Model ◽  
Engineering Drawing ◽  
Theoretical Possibility ◽  
New Approach ◽  
Simple Operation ◽  
High Efficient ◽  
3D Solid

This paper presents a new approach to reconstructing 3D solid model from the two given 2D orthographic views based on AutoCAD, which is much more effective and high efficient for a special kind of compound object than the currently existing ways. The approach emphasizes integrated operating of AutoCAD software and basic knowledge of engineering drawing with no needs for complicated computation and 3D rich imagination and reconstruction. Using this approach, the 3D solid model can be reconstructed effectively and efficiently from the two given 2D orthographic views by several steps of simple operation on computer on the basis of judgment. The research work provides a theoretical possibility for the automatic reconstruction of 3D Solid model of such compound objects, and a simple and practical 3D solid model-reconstructing method for engineers and learners of engineering drawing.

Internet Based Framework to Perform Automated FEA on User Customized Products

2003 ◽  
Author(s):  
Zahed Siddique ◽  
Jiju A. Ninan
Keyword(s):  
Product Family ◽  
Solid Model ◽  
Product Families ◽  
Analysis And Evaluation ◽  
The Past ◽  
Evaluation Of Performance ◽  
Internet Users ◽  
Solid Models ◽  
3D Solid ◽  
Fea Analysis

Designing family of products require analysis and evaluation of performance for the entire product family. In the past, products were mainly mass-produced hence the use of CAD/CAE was restricted to developing and analyzing individual products. Since the products offered using a platform approach include a variety of products built upon a common platform, CAD/CAE tools need to be explored further to assist in customization of products according to the customer needs. In this paper we investigate the development of a Product Family FEA (PFFEA) module that can support FEA analysis of user customized product families members. Customer specifications for family members are gathered using the internet, users are allowed to scale and change configurations of products. These specifications are then used to automatically generate 3D solid models of the product and then perform FEA to determine feasibility of the customer specified product. In this paper, development of the PFFEA module is illustrated using a family of lawn trimmer and edger. The PFFEA module uses Pro/E to generate the solid model and ANSYS as the base FEA software.

Graph-based heuristics for recognition of machined features from a 3D solid model

1988 ◽  
Vol 20 (2) ◽  
pp. 58-66 ◽  
Author(s):  
S. Joshi ◽  
T.C. Chang
Keyword(s):  
Solid Model ◽  
3D Solid

Fast 3D solid model reconstruction from orthographic views

1998 ◽  
Vol 30 (1) ◽  
pp. 63-76 ◽  
Author(s):  
Byeong-Seok Shin ◽  
Yeong Gil Shin
Keyword(s):  
Solid Model ◽  
Model Reconstruction ◽  
3D Solid

Conversion of a GIS surface data directly to a 3D STL part for terrain modeling

2014 ◽  
Vol 20 (5) ◽  
pp. 422-430 ◽  
Author(s):  
Sanat Agrawal ◽  
Deon J. de Beer ◽  
Yashwant Kumar Modi
Keyword(s):  
Three Dimensional ◽  
Solid Model ◽  
Catchment Management ◽  
Data Loss ◽  
Terrain Modeling ◽  
Content Type ◽  
Terrain Models ◽  
File Formats ◽  
Surface Data ◽  
3D Solid

Purpose – This paper aims to convert surface data directly to a three-dimensional (3D) stereolithography (STL) part. The Geographic Information Systems (GIS) data available for a terrain are the data of its surface. It doesn’t have information for a solid model. The data need to be converted into a three-dimensional (3D) solid model for making physical models by additive manufacturing (AM). Design/methodology/approach – A methodology has been developed to make the wall and base of the part and tessellates the part with triangles. A program has been written which gives output of the part in STL file format. The elevation data are interpolated and any singularity present is removed. Extensive search techniques are used. Findings – AM technologies are increasingly being used for terrain modeling. However, there is not enough work done to convert the surface data into 3D solid model. The present work aids in this area. Practical implications – The methodology removes data loss associated with intermediate file formats. Terrain models can be created in less time and less cost. Intricate geometries of terrain can be created with ease and great accuracy. Social implications – The terrain models can be used for GIS education, educating the community for catchment management, conservation management, etc. Originality/value – The work allows direct and automated conversion of GIS surface data into a 3D STL part. It removes intermediate steps and any data loss associated with intermediate file formats.

Research on the 3D Modeling Method of Epicycloids’ Bevel Gear Based on Pro/E

2011 ◽  
Vol 120 ◽  
pp. 15-19
Author(s):  
Chun Xiang Wang ◽  
Fan Juan Meng ◽  
Jing Qiang Zhang
Keyword(s):  
Cross Section ◽  
Optimization Design ◽  
Gear Tooth ◽  
Axial Direction ◽  
Variable Cross Section ◽  
Modeling Method ◽  
Bevel Gear ◽  
Solid Model ◽  
Variable Cross ◽  
3D Solid

In order to obtain 3D solid model of an Oerlikon system’s prolate epicycloidal bevel gear by full generating processing, the solid modeling method for the gear was studied in Pro/E. First, Drawing benchmark circles (base on the circle and reference circle as well as tip circle and root circle)and involute tooth profile of virtual equivalent gears of both large end and small end of the real gear, and then an intercepted segment of prolate epicycloid which has the same trend to the tooth and is controlled by prolate epicycloidal equations is projected to the surface of the gear’s root cone for the sake of getting tooth curve along axial direction. In the end, along the tooth curve and on the root cone conducting a variable cross section solid scanning to tooth shaped cross section, a complete gear tooth will be gained and at last model establishing will be finished. This method provided digital basis for optimization design, reverse design and rapid prototyping of this kind of gear, and so its design efficiency is improved.

Sign in / Sign up

Export Citation Format

Share Document