Survey on Use of Virtual Environments in Design and Manufacturing

Author(s):  
Rakesh Gupta

Abstract This paper surveys the work being done in Virtual Environments (VE) in both design and manufacturing with an emphasis on the industrial use of Virtual Environments. Research and applications are categorized into seven major areas: prototyping and design visualization; verification of design assembly; design creation; concurrent product design and marketing; manufacturing; training and maintenance; and human factors in design. These seven categories are neither mutually exclusive nor collectively exhaustive. For each of these major areas, the paper discusses the issues and the state of the art, emphasizing recent significant advances.

Author(s):  
Devdas Shetty ◽  
Tom Eppes ◽  
Lifeng Chao ◽  
Claudio Campana

Engineers, irrespective of their disciplines, need effective tools to comprehensively design, model, synthesize and analyze the design a product. This is often closely followed by the need to fabricate a working prototype. Engineers need useful methodologies and tools that can be used in preparation for manufacturing. These tools need to effectively analyze assembly & disassembly since a good assembly design makes a product les expensive to service, repair and maintain. A suite of well-integrated tools assists designers to create, simulate and test in a comprehensive manner. Modern software tools can be used at each stage to create conceptual designs, simulate part geometries, analyze key parameters, and generate motion paths for efficient manufacturing. This paper presents a set of comprehensive procedures and tools that can easily be incorporated into product design and manufacturing from early design through analysis. They consider assembly and disassembly factors up to and including the creation of a working prototype. Due to environmental regulations, designers must think about the product life cycle, recycling and reuse aspects from the very beginning. There is a continuing need for more efficient and rapid design processes which can best be driven by better tools and techniques.


Designs ◽  
2018 ◽  
Vol 2 (4) ◽  
pp. 37 ◽  
Author(s):  
Charul Chadha ◽  
Kathryn Crowe ◽  
Christina Carmen ◽  
Albert Patterson

This work explores an additive-manufacturing-enabled combination-of-function approach for design of modular products. AM technologies allow the design and manufacturing of nearly free-form geometry, which can be used to create more complex, multi-function or multi-feature parts. The approach presented here replaces sub-assemblies within a modular product or system with more complex consolidated parts that are designed and manufactured using AM technologies. This approach can increase the reliability of systems and products by reducing the number of interfaces, as well as allowing the optimization of the more complex parts during the design. The smaller part count and the ability of users to replace or upgrade the system or product parts on-demand should reduce user risk, life-cycle costs, and prevent obsolescence for the user of many systems. This study presents a detailed review on the current state-of-the-art in modular product design in order to demonstrate the place, need and usefulness of this AM-enabled method for systems and products that could benefit from it. A detailed case study is developed and presented to illustrate the concepts.


Author(s):  
Qingjin Peng

This paper describes the experience of teaching a graduate course in Mechanical and Manufacturing Engineering Programs at University of Manitoba, Virtual reality technology in product design and manufacturing. The course has been delivered six years since 2001. The course provides an opportunity for students to plan and optimize a design or manufacturing process in virtual environments. Students are expected to analyze some complex, open-ended questions in virtual environments for conceptual design solutions. This paper introduces the course outline and teaching materials developed in the last few years. The emphasis and challenge in the teaching and learning will be discussed. Examples of course projects completed by students are presented. The further work and direction of the course improvement will also be addressed.


Author(s):  
Dazhong Wu ◽  
Janis Terpenny ◽  
Dirk Schaefer

AbstractThis paper (Wu 2016), which was published in AI EDAM online on August 22, 2016, has been retracted by Cambridge University Press as it is very similar in content to a published ASME Conference Proceedings paper. The article in question and the ASME Conference Proceedings paper were submitted for review with AI EDAM and the ASME at similar times, but copyright was assigned to ASME before the paper was accepted in AI EDAM and therefore the article in AI EDAM is being retracted. (In recent years, industrial nations around the globe have invested heavily in new technologies, software, and services to advance digital design and manufacturing using cyber-physical systems, data analytics, and high-performance computing. Many of these initiatives, such as cloud-based design and manufacturing, fall under the umbrella of what has become known as Industry 4.0 or Industrial Internet and are often hailed as pillars of a new industrial revolution. While an increasing number of companies are developing or already offer commercial cloud-based software packages and services for digital design and manufacturing, little work has been reported on providing a review of the state of the art of these commercial software and services as well as identifying research gaps in this field. The objective of this paper is to present a state-of-the-art review of digital design and manufacturing software and services that are currently available on the cloud. The focus of this paper is on assessing to what extent engineering design, engineering analysis, manufacturing, and production across all phases of the product development lifecycles can already be performed based on the software and services accessed through the cloud. In addition, the key capabilities and benefits of these software packages and services are discussed. Based on the assessment of the core features of commercial software and services, it can be concluded that almost all phases of product realization can be conducted through digital design and manufacturing software and services on the cloud. Finally, existing research gaps and related challenges to overcome are identified. The state-of-the-art review serves to provide a technology guide for decision makers in their efforts to select suitable cloud-based software and services as alternatives to existing in-house resources as well as to recommend new research areas.)


1981 ◽  
Vol 25 (1) ◽  
pp. 48-52
Author(s):  
R.A. North ◽  
S.J. Mountford

A methodology was developed to identify the most beneficial task candidates for speech technology in an airborne crewstation. The method combined human factors analysis techniques with knowledge of the state-of-the-art in speech technology to produce a tradeoff matrix that ranks each task on pilot utility and technological feasibility. Information retrieval from flight manuals was identified as a “high need” task that could be readily implemented with a speech system in the cockpit.


1980 ◽  
Vol 24 (1) ◽  
pp. 85-89 ◽  
Author(s):  
H. Rudy Ramsey ◽  
Michael E. Atwood

A major literature survey investigated the state of the art in human factors in computer systems. The survey was concerned both with the status of human factors research in the area of user-computer interaction and with the current state of user-computer interaction technology and practices. The principal goal of the study was to determine the feasibility of human factors guidelines for interactive computer systems, and to investigate their possible form and content. Thus, the study addressed both the state of the art in the field and the information needs and problem-solving behavior of interactive system designers, since these personnel would be the primary users of guidelines. It is concluded that insufficient data exist for the development of a “quantitative reference handbook” in this area, and that that form of presentation may not be appropriate anyway. On the other hand, a “human factors design guide” – which discusses issues, alternatives, and methods in the context of the design process – appears both feasible and needed.


Author(s):  
Charul Chadha ◽  
Kathryn Crowe ◽  
Christina Carmen ◽  
Albert Patterson

This work explores an additive-manufacturing-enabled combination-of-function approach for design of modular products. AM technologies allow the design and manufacturing of nearly free-form geometry, which can be used to create more complex, multi-function or multi-feature parts. The approach presented here replaces sub-assemblies within a modular product or system with more complex single parts that are designed and manufactured using AM technologies. This approach can increase the reliability of systems and products by reducing the number of interfaces, as well as allowing the optimization of the more complex parts during the design. The smaller part count and the ability of users to replace or upgrade the system or product parts on-demand should reduce user risk, life-cycle costs, and prevent obsolescence for the user of many systems. This study presents a detailed review on the current state-of-the-art in modular product design in order to demonstrate the place, need and usefulness of this AM-enabled method for systems and products that could benefit from it. A detailed case study is developed and presented to demonstrate the concepts.


1992 ◽  
Vol 7 (2) ◽  
pp. 75-83 ◽  
Author(s):  
R Motro

Tensegrity systems are space structures of a special nature and their industrial use has not yet been fully developed. The article describes the state of the art. The systems examined are geometrically and mechanically complex. Solutions have been found for some of the problems and others require development. A large set of references identifies the main contributions of researchers encouraging the designing of tensegrity systems open up new prospects for construction and application.


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