Study on Virtual Design of Positioning Fixture

2011 ◽  
Vol 105-107 ◽  
pp. 2104-2108
Author(s):  
Huai Bi Zhao
Keyword(s):  
Virtual Environment ◽  
Fixture Design ◽  
Virtual Design ◽  
Interference Analysis ◽  
Processing Module ◽  
Dynamic Interference

This paper investigates the typical positioning fixture design under a virtual environment. The modeling and assembling work of the fixture are firstly presented by CATIA V5. Then the static interference analysis and the dynamic interference analysis for the fixture are proceeded in the BUM module. Finally, the simulation is taken in the processing module to check the feasibility of the designed fixture. The presented research in this paper offers an engineering reference for positioning fixture design.

A Framework for Designing Component Shapes in a Virtual Reality Environment

1997 ◽  
Author(s):  
Tushar H. Dani ◽  
Rajit Gadh
Keyword(s):  
Virtual Reality ◽  
Virtual Environment ◽  
User Interfaces ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
Human Interaction ◽  
Prototype System ◽  
Virtual Design ◽  
Cad System ◽  
Interactive Editing

Abstract Despite advances in Computer-Aided Design (CAD) and the evolution of the graphical user interfaces, rapid creation, editing and visualization of three-dimensional (3D) shapes remains a tedious task. Though the availability of Virtual Reality (VR)-based systems allows enhanced three-dimensional interaction and visualization, the use of VR for ab initio shape design, as opposed to ‘importing’ models from existing CAD systems, is a relatively new area of research. Of interest are computer-human interaction issues and the design and geometric tools for shape modeling in a Virtual Environment (VE). The focus of this paper is on the latter i.e. in defining the geometric tools required for a VR-CAD system and in describing a framework that meets those requirements. This framework, the Virtual Design Software Framework (VDSF) consists of the interaction and design tools, and an underlying geometric engine that provides the representation and algorithms required by these tools. The geometric engine called the Virtual Modeler uses a graph-based representation (Shape-Graph) for modeling the shapes created by the user. The Shape-Graph facilitates interactive editing by localizing the effect of editing operations and in addition provides constraint-based design and editing mechanisms that are useful in a 3D interactive virtual environment. The paper concludes with a description of the prototype system, called the Virtual Design Studio (VDS), that is currently being implemented.1.

Application of an Alternative Teaching Model in a Virtual Architectural Design Studio: Impacts and Constraints

2006 ◽  
Vol 31 (3) ◽  
pp. 77-84
Author(s):  
Rabee M. Reffat
Keyword(s):  
Real Time ◽  
Virtual Environment ◽  
Architectural Design ◽  
Shared Responsibility ◽  
Design Studio ◽  
Teaching Model ◽  
Virtual Design ◽  
Alternative Teaching ◽  
3D Virtual Environment ◽  
Architectural Design Studio

This paper introduces an alternative teaching model in a virtual architectural design studio, its application, impacts and constraints. This model aims for achieving collaborative learning through facilitating students to Inhabit, Design, Construct and Evaluate (IDCE) their designs collaboratively in a multi-user real-time 3D virtual environment platform (Activeworlds). The application of this model in virtual design studio (VDS) teaching has favorably impacted students' motivation for active, creative and explorative learning, social dynamics between studio participants. It also fostered learning electronic communication, collaboration techniques and etiquette in addition to design technology. The model assisted in developing collaborative experience and shared responsibility. However, there are some drawbacks of the virtual environment platform that hindered having a responsive design environment to users' needs with especially in modeling and rate of viewing. The advantages and constraints of applying the IDCE teaching model in a multi-user real-time 3D virtual environment for first year students at the University of Sydney are addressed in this paper.

COVIRDS: A Conceptual Virtual Design System

1995 ◽  
Author(s):  
Tushar H. Dani ◽  
Rajit Gadh
Keyword(s):  
Virtual Environment ◽  
Computer System ◽  
System Architecture ◽  
Design System ◽  
Shape Design ◽  
Virtual Design ◽  
Computer System Architecture

Abstract This paper describes the development of a computer system architecture for mechanical conceptual shape design within a virtual environment — COVIRDS1 (COnceptual VIRtual Design System).

Research on Virtual Design and Simulation System of Characteristic Fruit Manipulator in Southern China

2011 ◽  
Vol 148-149 ◽  
pp. 1394-1398
Author(s):  
Wei Liang Cai ◽  
Yan Chen ◽  
Meng Si Zhu ◽  
Xiang Jun Zou ◽  
Jing Li ◽  
...  
Keyword(s):  
Knowledge Base ◽  
Virtual Environment ◽  
Southern China ◽  
Parametric Model ◽  
Simulation System ◽  
Design System ◽  
Virtual Design ◽  
Key Technologies ◽  
Database Technology ◽  
Modular Technology

To study the characteristic fruit manipulator in southern China, architecture of fruit manipulator virtual design system was build by the use of modular technology. Parameterize the feature properties of picking manipulator, so the reusable parametric model was build. Based on the database technology, the knowledge base was build, including examples base, constraint rules and research status. Moreover, visualization 3D simulation of the processing of picking was realized under the virtual environment. Finally, through the development of experimental prototype, the virtual design system and its key technologies can be verified.

scholarly journals A Virtual Environment to Support the Distributed Design of Large Made-to-Order Products

2011 ◽  
pp. 299-320
Author(s):  
Robert Ian Whitfield
Keyword(s):  
European Commission ◽  
Virtual Environment ◽  
Use Case ◽  
Distributed Design ◽  
Design Environment ◽  
Virtual Design ◽  
Virtual Platform

An overview of a virtual design environment (virtual platform) developed as part of the European Commission funded VRShips-ROPAX (VRS) project is presented. The main objectives for the development of the virtual platform are described, followed by the discussion of the techniques chosen to address the objectives, and finally a description of a use-case for the platform. Whilst the focus of the VRS virtual platform was to facilitate the design of ROPAX (roll-on passengers and cargo) vessels, the components within the platform are entirely generic and may be applied to the distributed design of any type of vessel, or other complex made-to-order products.

Research on Virtual Prototyping Development of Product Information Modeling Method

2010 ◽  
Vol 129-131 ◽  
pp. 658-663 ◽  
Author(s):  
Tian Chen
Keyword(s):  
Virtual Environment ◽  
Information Exchange ◽  
Product Information ◽  
Virtual Prototyping ◽  
Information Modeling ◽  
Product Development Process ◽  
Design Stage ◽  
Concept Design ◽  
Virtual Design ◽  
Virtual Product

In the heterogeneous environment, fast and real-time information exchange is the requirements of rapid developing and information integrated for mechanical products. Meanwhile, it is also the basis and guarantee of virtual prototyping. This paper analyzes the process of mechanical product design, particularly starts from the concept design stage of virtual product to achieve information sharing and building information models, put forward a software network environment based on objects and STEP standards for integrated information model and the basic PVPIIM framework, application protocol's development, leaf characteristics of the definition and expressions. Furthermore, we proposed a distributed virtual environment in the virtual prototyping development and make it support the whole pump virtual product development process on basis of PVPIIM for an integrated virtual environment, where we use virtual reality modeling language VRML to describe the 3D geometric shape, material, texture, color and virtual design background of pump parts.

3D Modeling and Motion Simulation of Mine Skip Getting through Dump Rail Based on Pro/E

2012 ◽  
Vol 557-559 ◽  
pp. 2176-2180
Author(s):  
Ming Xia Yan
Keyword(s):  
3D Modeling ◽  
Virtual Assembly ◽  
Motion Simulation ◽  
Development Cost ◽  
Virtual Design ◽  
Design Quality ◽  
Improve Design ◽  
Dynamic Interference

3D modeling, virtual assembly and motion simulation of an up-open fan gate mine skip were completed with Pro/Engineer software. During virtual design, faults of a mine skip such as static and dynamic interference can be found out prior to be made, which is helpful to optimize it. Furthermore, it is effective to shorten design period of mine skip and save development cost and improve design quality.

Geometric Modeling and Collaborative Design in a Multi-Modal Multi-Sensory Virtual Environment

2000 ◽  
Author(s):  
Rajarathinam Arangarasan ◽  
Rajit Gadh
Keyword(s):  
Virtual Environment ◽  
Design Process ◽  
Collaborative Design ◽  
Computer Aided Design ◽  
Geometric Modeling ◽  
Shape Modeling ◽  
Design System ◽  
Design Environment ◽  
Virtual Design ◽  
Design Cycle

Abstract Shape modeling plays a vital role in the design process but often it is the most tedious task in the whole design cycle. In recent years the Computer Aided Design (CAD) industry has evolved through a number of advances and developments in design methodology. However, modeling in these CAD systems requires expertise and in-depth understanding of the modeling process, user interface and the CAD system itself, resulting in increased design cycle time. To overcome these problems a new methodology and a system called “Detailed Virtual Design System” (DVDS) has been developed for detailed shape modeling in a multi-modal, multi-sensory Virtual Environment (VE). This system provides an intuitive and natural way of designing using hand motions, gestures and voice commands. Due to the lack of effective collaborative design, visualization and analysis tools, designers spend a considerable amount of time and effort in the group discussion during design process. To enable multiple designers to effectively and efficiently collaborate in a design environment, framework of a collaborative virtual environment, called “Virtual Environment to Virtual Environment” (V2V), has been discussed. This framework allows same site and remote site multi-modal, multi-sensory immersive interface between designers.

A Virtual Hemodialyzer Design Project for First-Year Engineers: An Epistemic Game Approach

2010 ◽  
Author(s):  
Naomi C. Chesler ◽  
Elizabeth Bagley ◽  
Eric Breckenfeld ◽  
Devin West ◽  
David Williamson Shaffer
Keyword(s):  
Engineering Design ◽  
Virtual Environment ◽  
Design Problem ◽  
Engineering Students ◽  
First Year ◽  
Engineering Profession ◽  
Virtual Design ◽  
Design Problems ◽  
Enrollment Rates ◽  
Epistemic Frame

Engineering institutions nationwide are pursuing first-year engineering design courses to attract and retain nontraditional students. However, these courses often have high enrollment rates and can be resource intensive. Virtual design projects offer a potential solution to the physical resources requirements but often result in an overly constrained design space, creating uninteresting or non-challenging design problems. We are developing a design problem within a novel virtual environment (i.e., a game) that provides first-year engineering undergraduates with a more authentic engineering design experience and a more complete and accurate understanding of the engineering profession. The design problem presented challenges students to incorporate carbon nanotubes and chemical surfactants into a hemodialysis ultrafiltration unit. Our approach seeks to provide students with experience in the skills, knowledge, values, identity, and epistemology of the engineering profession, which is the epistemic frame of the profession. The virtual environment also provides a uniquely comprehensive platform for assessing the students’ epistemic frame development over time. We anticipate that this approach will be highly engaging to first-year undergraduate engineering students and will help engineering instructors understand how engineers-in-training learn to become engineers.

scholarly journals A Virtual Environment to Support the Distributed Design of Large Made-to-Order Products

2008 ◽  
pp. 304-325
Author(s):  
Robert Ian Whitfield ◽  
Alex H.B. Duffy ◽  
Alastair Conway ◽  
Zhichao Wu ◽  
Joanne Meehan
Keyword(s):  
European Commission ◽  
Virtual Environment ◽  
Use Case ◽  
Distributed Design ◽  
Design Environment ◽  
Virtual Design ◽  
Virtual Platform

An overview of a virtual design environment (virtual platform) developed as part of the European Commission funded VRShips-ROPAX (VRS) project is presented. The main objectives for the development of the virtual platform are described, followed by the discussion of the techniques chosen to address the objectives, and finally a description of a use-case for the platform. Whilst the focus of the VRS virtual platform was to facilitate the design of ROPAX (roll-on passengers and cargo) vessels, the components within the platform are entirely generic and may be applied to the distributed design of any type of vessel, or other complex made-to-order products.

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