Application of Modified Grid-Based Approach for Auto Mesh Generation of IT-Related Products

2006 ◽  
Vol 321-323 ◽  
pp. 12-15
Author(s):  
Young Jae Park ◽  
Byung Sun Kim ◽  
Han Ok Ko ◽  
Yoon Suk Chang ◽  
Jae Boong Choi ◽  
...  
Keyword(s):  
Dynamic Analysis ◽  
Product Design ◽  
Mesh Generation ◽  
Industrial Application ◽  
Complex Geometry ◽  
Cellular Phone ◽  
Rough Boundary ◽  
Cad Model ◽  
Exact Geometry ◽  
Grid Based

A seamless analysis of IT-related products, such as cellular phone, LCD monitor and note PC etc., which are thin and complex geometry is one of great concerns in product design. However, there is a considerable amount of gap between the industrial application and fundamental academic studies due to a time consuming detailed mesh generation. In order to settle the bottleneck, an auto mesh generation program based on a modified grid-based approach is proposed in this paper. At first, base mesh and skin mesh were generated using informations on entities which extracted from an IGES (Initial Graphics Exchange Specification) file. Secondly, a provisional core mesh with a rough boundary geometry was constructed by superimposing the skin mesh into the base mesh generated from CAD model. And then, positions of boundary nodes were redistributed to delineate exact geometry of the provisional mesh. Finally, good qualified meshes were constructed by moving the positions of the nodes and splitting elements along boundary edges. In conclusion, it is anticipated that the developed program can be used as a promising pre-processor for static or dynamic analysis of various IT-related products.

Application of Grid-Based Approach for Auto Mesh Generation of Vacuum Chamber

2006 ◽  
Vol 306-308 ◽  
pp. 631-636 ◽  
Author(s):  
Young Jae Park ◽  
H.K. Kim ◽  
Yoon Suk Chang ◽  
Jae Boong Choi ◽  
Young Jin Kim
Keyword(s):  
Finite Element ◽  
Mesh Generation ◽  
Vacuum Chamber ◽  
Complex Geometry ◽  
Industrial Applications ◽  
Cad Model ◽  
Finite Element Analyses ◽  
Mesh Quality ◽  
Modeling Process ◽  
Grid Based

A seamless analysis of complex geometry is one of greatly interesting topic. However, there are still gaps between the industrial applications and fundamental academic studies owing to time consuming modeling process. To resolve this problem, an auto mesh generation program based on grid-based approach has been developed for IT-product in the present study. At first, base mesh and skin mesh are generated using the information of entities which extracted from IGES file. Secondly the provisional core mesh with rugged boundary geometry is constructed by superimposing the skin mesh as well as the base mesh generated from the CAD model. Finally, the positions of boundary nodes are adjusted to make a qualified mesh by adapting node modification and smoothing techniques. Also, for the sake of verification of mesh quality, the hexahedral auto mesh constructed by the program is compared with the corresponding tetrahedral free mesh and hexahedral mapped mesh through static finite element analyses. Thereby, it is anticipated that the grid-based approach can be used as a promising pre-processor for integrity evaluation of various IT-products.

scholarly journals Hex-dominant mesh generation for basin modeling with complex geometry

2010 ◽  
Vol 10 ◽  
pp. 012085
Author(s):  
Longmin Ran ◽  
Houman Borouchaki ◽  
Abdallah Benali ◽  
Chakib Bennis
Keyword(s):  
Mesh Generation ◽  
Complex Geometry ◽  
Basin Modeling

scholarly journals Modeling in ADAMS of a 6R industrial robot

2018 ◽  
Vol 184 ◽  
pp. 02006
Author(s):  
Mariana Ratiu ◽  
Alexandru Rus ◽  
Monica Loredana Balas
Keyword(s):  
Dynamic Analysis ◽  
Industrial Robot ◽  
Kinematic Model ◽  
Future Research ◽  
Robot Motion ◽  
Cad Model ◽  
3D Cad ◽  
Revolute Joints ◽  
Real Model ◽  
Articulated Robot

In this paper, we present the first steps in the process of the modeling in ADAMS MBS of MSC software of the mechanical system of an articulated robot, with six revolute joints. The geometric 3D CAD model of the robot, identical to the real model, in the PARASOLID format, is imported into ADAMS/View and then are presented the necessary steps for building the kinematic model of the robot. We conducted this work, in order to help us in our future research, which will consist of kinematic and dynamic analysis and optimization of the robot motion.

Design and Deformation of CAD Surface Models With Haptics

2004 ◽  
Author(s):  
X. Liu ◽  
G. Dodds ◽  
J. McCartney ◽  
B. K. Hinds
Keyword(s):  
Shape Control ◽  
Force Feedback ◽  
Complex Geometry ◽  
Virtual Space ◽  
Cad Model ◽  
Two Dimensional ◽  
Shape Functions ◽  
Ship Hulls ◽  
Control Functions ◽  
Surface Models

With traditional two-dimensional based interfaces, many CAD surface models, such as automobile bodies and ship hulls, are difficult to design and edit due to their 3D nature. This paper discusses the haptic-based deformation for the design of CAD surface models. With haptic devices (force feedback interfaces) designers can, in virtual space, touch a native B-rep CAD model, and use their tactile senses to manipulate it by pushing, pulling and dragging its surfaces in a natural 3D environment. The paper presents shape control functions. By using the shape functions, designers can directly manipulate and deform a selected region of a surface to the desired shape, and generate complex geometry with simple operations. Force feedback gives designers the greatest flexibility for the design of complex surfaces.

CAD Model Reuse Based on the Integrate Design History

2013 ◽  
Vol 423-426 ◽  
pp. 1898-1901
Author(s):  
Ying Jie Wu ◽  
Qi Gao ◽  
Gang Liu ◽  
Xue Ji
Keyword(s):  
Product Design ◽  
Prototype System ◽  
Cad Model ◽  
Design History ◽  
Model Reuse ◽  
Design Information ◽  
Modeling Process ◽  
Design Guide ◽  
Incomplete Design ◽  
Integrate Design

A CAD model cannot be reused efficiently because of its incomplete design information. To solve this problem, a CAD model reuse method based on the IDH (Integrate Design History) is presented. IDH is defined as full record of modeling process and related knowledge, an extended CAD model is built as the carrier of the IDH. Based on the extended CAD model, a model reuse method is proposed by taking advantage of product design guide technology. Finally, a prototype system is developed and verifies the efficiency and feasibility of this method.

A CAD Template Approach to Support Web-Based Customer Centric Product Design

2005 ◽  
Vol 5 (4) ◽  
pp. 381-387 ◽  
Author(s):  
Zahed Siddique ◽  
Karunakar Boddu
Keyword(s):  
Product Design ◽  
Design Process ◽  
Mass Customization ◽  
Computer Aided Design ◽  
Cad Model ◽  
Entire Family ◽  
Web Based ◽  
Computer Aided ◽  
Aided Design ◽  
Configurable Products

In order to provide products that can be tailored to the need of the customer, it is necessary to integrate the customer into the design process. In this paper we present a mass customization computer-aided design (CAD) framework that helps to integrate the customer into the design of user-configurable products. A template approach, which considers both modularity and scaling, is utilized to concisely represent a CAD model of the entire family. The system accepts user selections and parameters to automatically create a CAD model of the customized product in real time and then shows the model to the user. The system is implemented using PRO/ENGINEER and demonstrated through customization of bicycle frames.

Development of CAD Model Annotation System Based on Design Intent

2017 ◽  
Vol 863 ◽  
pp. 368-372
Author(s):  
Qin Yi Ma ◽  
Li Hua Song ◽  
Da Peng Xie ◽  
Mao Jun Zhou
Keyword(s):  
Product Design ◽  
3D Model ◽  
Adaptive Design ◽  
Design Knowledge ◽  
Cad Model ◽  
Design Intent ◽  
Design Information ◽  
Annotation System ◽  
Modeling Analysis ◽  
Model Annotation

Most of the product design on the market is variant design or adaptive design, which need to reuse existing product design knowledge. A key aspect of reusing existing CAD model is correctly define and understand the design intents behind of existing CAD model, and this paper introduces a CAD model annotation system based on design intent. Design intents contained all design information of entire life cycle from modeling, analysis to manufacturing are marked onto the CAD model using PMI module in UG to improve the readability of the CAD model. Second, given the problems such as management difficulties, no filter and retrieval functions, this paper proposes an annotation manager system based on UG redevelopment by filtration, retrieval, grouping and other functions to reduce clutter on the 3D annotations and be convenient for users to view needed all kinds of annotations. Finally, design information is represented both internally within the 3D model and externally on a XML file.

A Morphing Method for Shape Generation in Product Design

2000 ◽  
Vol 44 (8) ◽  
pp. 32-35
Author(s):  
Shih-Wen Hsiao
Keyword(s):  
Computer Program ◽  
Product Design ◽  
Product Form ◽  
Cad Model ◽  
Image Perception ◽  
Gray Theory ◽  
Semantic Difference ◽  
Form Design ◽  
Feature Based ◽  
Design Ideas

A morphing method for product design is proposed in this study. In this model, a feature-based method is first used to construct a CAD model of a product. The image perception of the product is then quantified by using ‘semantic difference (SD)’ and the relationships between the morphed shapes and image words are analyzed with ‘gray theory’. A consultative computer program is then constructed based on these basic data. With this program, the designer can start to develop design ideas and will quickly obtain a product form that fits the demanded image by inputting an image word. Though the form design for a LCD monitor is taken as an example in this study, this method can also be used to develop other products.

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