Integrating Virtual Reality for Virtual Prototyping

1998 ◽  
Author(s):  
Antonino Gomes de S. ◽  
Gabriel Zachmann
Keyword(s):  
Virtual Reality ◽  
Product Development ◽  
Business Process ◽  
Development Time ◽  
Virtual Prototyping ◽  
International Markets ◽  
User Survey ◽  
Product Complexity ◽  
Design Quality ◽  
Near Future

Abstract Business process re-engineering is becoming a main focus in today’s efforts to overcome problems and deficits in the automotive and aerospace industries (e.g., integration in international markets, product complexity, increasing number of product variants, reduction in product development time and cost). In this paper, we investigate the steps needed to apply virtual reality (VR) for virtual prototyping (VP) to verify assembly and maintenance processes. After a review of today’s business process in vehicle prototyping, we discuss CAD-VR data integration and identify new requirements for design quality. We present several new interaction paradigms so that engineers and designers can experiment naturally with the prototype. Finally, some results of a user survey performed at BMW are presented, showing the acceptance and feasability of VP and the paradigms implemented for our key process. The results show that VR will play an important role for VP in the near future.

Cure and Rheological Analysis of Reinforced Resins for Stereolithography

2008 ◽  
Vol 587-588 ◽  
pp. 563-567 ◽  
Author(s):  
J. Gaspar ◽  
P.J. Bártolo ◽  
Fernando M. Duarte
Keyword(s):  
Product Development ◽  
New Product Development ◽  
Rheological Behaviour ◽  
International Markets ◽  
Product Development Process ◽  
Powder Size ◽  
Product Complexity ◽  
Polymeric Systems ◽  
Development Context ◽  
Metallic Parts

The rising of consumers’ demands and an ever increasing pressure of international markets imposed a deep change in the product development process to respond to an increasing product complexity and higher quality, as well to the need to promptly introduce products into the market. Stereolithography plays an important role on this new product development context. This technology produces models for thermosetting resins through a polymerisation process that transforms liquid resins into solid materials. In this work, a new route to produce metallic parts through stereolithography is explored. The curing analysis of hybrid reinforced polymeric systems, polymerised through radicalar or/and cationic mechanisms, is investigated. The rheological behaviour of these polymeric systems is also evaluated due to its importance for recoating. The influence of other processing and material characteristics like light intensity, initiator concentration, low powder size of metallic powders, degree of dilution, etc. is also investigated.

Metallic Stereolithography

2008 ◽  
Author(s):  
Jorge Gaspar ◽  
Paulo Jorge Ba´rtolo
Keyword(s):  
Product Development ◽  
New Product Development ◽  
Rheological Behaviour ◽  
International Markets ◽  
Product Development Process ◽  
Powder Size ◽  
Product Complexity ◽  
Polymeric Systems ◽  
Development Context ◽  
Metallic Parts

The rising of consumers’ demands and an ever increasing pressure of international markets imposed a deep change in the product development process to respond to an increasing product complexity and higher quality, as well to the need to promptly introduce products into the market. Stereolithography plays an important role on this new product development context. This technology produces models for thermosetting resins through a polymerisation process that transforms liquid resins into solid materials. In this work, a new route to produce metallic parts through stereolithography is explored. The curing analysis of hybrid reinforced polymeric systems, polymerised through radicalar or/and cationic mechanisms, is investigated. The rheological behaviour of these polymeric systems is also evaluated due to its importance for recoating. The influence of other processing and material characteristics like light intensity, initiator concentration, powder size of metallic powders, degree of dilution, etc. is also investigated.

Practical Considerations for Setting Up A Virtual Reality System for Virtual Prototyping

2003 ◽  
Vol 3 (3) ◽  
pp. 266-271
Author(s):  
Joseph P. De Kroon ◽  
Bert Bras
Keyword(s):  
Virtual Reality ◽  
Product Development ◽  
Virtual Prototyping ◽  
Software Components ◽  
Virtual Reality System ◽  
Wide Range ◽  
System Components ◽  
Commercial Off The Shelf

As smaller companies in a wider range of industries seek to implement virtual reality (VR) in their product development cycles, they are presented with a wide range of choices for commercial off-the-shelf hardware and software components that make up a virtual reality system. In this article, results and learning from efforts in an industry project (as well as from our continued work in this field of research) are shared, which are expected to be of practical use for the engineer in industry or researcher in academia who wishes to use VR for virtual prototyping. Some findings are presented about what VR is and is not, and advice is provided about selecting a candidate application and selecting VR system components, suggesting a list of criteria by which VR system components may be compared and selected.

scholarly journals Open Architecture Framework for Integrated Virtual Product Development Systems

1997 ◽  
Vol 3 (1) ◽  
pp. 1-26 ◽  
Author(s):  
Scott Angster ◽  
Sankar Jayaram
Keyword(s):  
Virtual Reality ◽  
Product Development ◽  
Manufacturing Systems ◽  
New Technologies ◽  
Virtual Prototyping ◽  
Systems Design ◽  
Open Architecture ◽  
Software Systems ◽  
Virtual Product Development ◽  
Virtual Product

In the current marketplace, products are required to proceed rapidly from conceptualization to production. This has put a great deal of pressure on the current state of computer software systems. These include computer-aided design and manufacturing systems, design for assembly systems, design for manufacture systems, and manufacturing simulation systems. Modern product development processes call for rapid designs and adapting designs to suit ever changing customer requirements. Virtual prototyping is allowing engineers to quickly create digital prototypes, allowing for quick evaluation of conceptual designs. New technologies such as virtual reality are now being used to aid engineers in the area of virtual prototyping. Existing systems using virtual reality technology are limited in their expandability, customization, or usability with current design software systems. This paper discusses an expandable and customizable architecture aimed at integrating virtual product development tools.

Virtual Reality for Machine Tool Prototyping

Manufacturing ◽  
2002 ◽  
Author(s):  
Antonio Valerio Netto ◽  
Maria Cristina Ferreira de Oliveira
Keyword(s):  
Virtual Reality ◽  
Product Development ◽  
Machine Tool ◽  
Virtual Environments ◽  
Geometric Model ◽  
Virtual Prototyping ◽  
Physical Design ◽  
Virtual Reality Technology ◽  
New Approach ◽  
Cnc Lathe

We outline a procedure for implementing a virtual CNC lathe prototype using software for creating virtual environments. The prototype constructed focus on the lathe’s interlocking system (its functionality) and on its geometric model (its physical design). This project allowed us to identify the possibilities and limitations of applying current Virtual Reality technology for virtual prototyping of manufacturing machines, and evaluate the complexity associated to product prototyping in manufacturing or assembly. In additional, we suggest the possibility that this new approach can use for three areas: Training, Marketing/Sale and Product development.

scholarly journals A survey of virtual prototyping techniques for mechanical product development

2003 ◽  
Vol 217 (4) ◽  
pp. 513-530 ◽  
Author(s):  
F Zorriassatine ◽  
C Wykes ◽  
R Parkin ◽  
N Gindy
Keyword(s):  
Product Development ◽  
Manufacturing Industry ◽  
Virtual Prototyping ◽  
World Market ◽  
Product Development Process ◽  
Research Issues ◽  
Computer Based ◽  
The Difference ◽  
Medium Enterprises ◽  
Near Future

Repeated, efficient, and extensive use of prototypes is a vital activity that can make the difference between successful and unsuccessful entry of new products into the competitive world market. In this respect, physical prototyping can prove to be very lengthy and expensive, especially if modifications resulting from design reviews involve tool redesign. The availability and affordability of advanced computer technology has paved the way for increasing utilization of prototypes that are digital and created in computer-based environments, i.e. they are virtual as opposed to being physical. The technology for using virtual prototypes was pioneered and adopted initially by large automotive and aerospace industries. Small-to-medium enterprises (SMEs) in the manufacturing industry also need to take virtual prototyping (VP) technology more seriously in order to exploit the benefits. VP is becoming very advanced and may eventually dominate the product development process. However, physical prototypes will still be required for the near future, albeit less frequently. This paper presents a general survey of the available VP techniques and highlights some of the most important developments and research issues while providing sources for further reference. The purpose of the paper is to provide potential SME users with a broad picture of the field of VP and to identify issues and information relevant to the deployment and implementation of VP technology.

scholarly journals Multi-Resolution Modeling for Virtual Design

2000 ◽  
Vol 4 (4) ◽  
pp. 110-120 ◽  
Author(s):  
Chiyi Cheng ◽  
Mingmin Zhang ◽  
Zhigeng Pan
Keyword(s):  
Virtual Reality ◽  
Virtual Prototyping ◽  
Virtual Design ◽  
Multiple Objects ◽  
Variable Resolution ◽  
Modeling Techniques ◽  
Efficient Extraction ◽  
Key Features ◽  
Modeling Data ◽  
Representation Scheme

The benefits of multi-resolution modeling techniques in virtual reality are vast, but one essential component of this model is how it can be used to speedup the process of virtual design and virtual prototyping. In this paper we propose a new multi-resolution representation scheme called MRM, which can support efficient extraction of both fixed and variable resolution modeling data for handling multiple objects in the same scene. One important feature of the MRM scheme is that it supports unified selective simplifications and selective refinements over the mesh representation of the object. In addition, multi-resolution models may be used to support real-time geometric transmission of data in collaborative virtual design and prototyping applications. These key features in MRM, may be applied to a variety of VR applications.

scholarly journals A Survey of Interactive Systems based on Brain-Computer Interfaces

2013 ◽  
Vol 4 (1) ◽  
pp. 1 ◽  
Author(s):  
Alessandro Luiz Stamatto Ferreira ◽  
Leonardo Cunha de Miranda ◽  
Erica Esteves Cunha de Miranda ◽  
Sarah Gomes Sakamoto
Keyword(s):  
Virtual Reality ◽  
Brain Computer Interface ◽  
Research Area ◽  
Interactive Systems ◽  
Computer Interface ◽  
Immersive Environments ◽  
User Interactions ◽  
Computer Interfaces ◽  
Brain Signals ◽  
Near Future

Brain-Computer Interface (BCI) enables users to interact with a computer only through their brain biological signals, without the need to use muscles. BCI is an emerging research area but it is still relatively immature. However, it is important to reflect on the different aspects of the Human-Computer Interaction (HCI) area related to BCIs, considering that BCIs will be part of interactive systems in the near future. BCIs most attend not only to handicapped users, but also healthy ones, improving interaction for end-users. Virtual Reality (VR) is also an important part of interactive systems, and combined with BCI could greatly enhance user interactions, improving the user experience by using brain signals as input with immersive environments as output. This paper addresses only noninvasive BCIs, since this kind of capture is the only one to not present risk to human health. As contributions of this work we highlight the survey of interactive systems based on BCIs focusing on HCI and VR applications, and a discussion on challenges and future of this subject matter.

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