Industrial Virtual Reality: Manufacturing and Design Tool for the Next Millennium最新文献

{"title":"VPAVE: An Interactive Tool for Validating Assembly Components in Virtual Environment Using Finite Element Simulation","authors":"T. Deviprasad, T. Kesavadas","doi":"10.1115/imece1999-0165","DOIUrl":"https://doi.org/10.1115/imece1999-0165","url":null,"abstract":"\u0000 Assembly is a geometric problem and its success depends on the quality of the mating parts. Design for Assembly (DFA) takes care of the issues such as part handling, insertion and mating, and other features that make assembly an easier and cost effective task. Practical considerations like part deformation during manufacturing, wear and tear of machines and jigs, and other constraints like cost and technical limitations contribute significantly to dimensional and form errors. These factors are usually not accounted for during the DFA, as the data is not as yet available. This results in improper assembly and part rejection at a later stage. One approach of solving this problem is to develop a virtual prototype, which captures the real manufacturing variables by modeling the process impact on the assembled components. The work presented here tries to look at a few issues concerning validation of the virtual prototype (VP) of a manufactured component before assembly.\u0000 A Virtual Prototype Assembly Validation Environment dubbed VPAVE was developed to test virtual prototypes of manufactured component in a Virtual Environment for assembly process. We have demonstrated by an example that the VPAVE based validation during DFA can prevent difficulties that may arise during the actual assembly process due to the influence of the production process of the components.","PeriodicalId":231726,"journal":{"name":"Industrial Virtual Reality: Manufacturing and Design Tool for the Next Millennium","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130488625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Virtual Reality Enabling Parameterization of CFD Simulations for Non-Empty Room Layout Design","authors":"V. Giallorenzo, P. Banerjee","doi":"10.1115/imece1999-0176","DOIUrl":"https://doi.org/10.1115/imece1999-0176","url":null,"abstract":"\u0000 In this paper, a new approach of establishing the Computational Fluid Dynamics (CFD) - Virtual Reality (VR) design interface is described. Near optimal configuration of all the parameters affecting the contaminant removal is the most important factor that determines the effectiveness of the cleanliness of the indoor air. The main limitation encountered in applying VR to CFD aided design is due to complex and time consuming setup and computation steps of a CFD analysis. Consequently a CFD computation of the airflow pattern is done separately with a traditional CFD solver and then the data is imported in VR. This makes it infeasible to use CFD/VR to analyze a large number of layout design alternatives.\u0000 A novel method for overcoming this problem has been conceptualized by using a VR preprocessing step. A mathematical expression of the dependence of the contaminant removal effectiveness on room parameters has been developed based on the experimental result. In this way, the selected set of preferred solutions is selected among the enormous number of possible alternatives. The restricted set of room layouts is further investigated by VR analysis of the CFD simulation. This provides insight for an effective positioning of all parameters for room air cleanliness. This two step CFD/VR aided design technique allows overcoming the problems that affect the integration of CFD and VR technique in design of contaminant-free environments.\u0000 The methodology is well suited for the design of special indoor environments such as tuberculosis hospital facilities, clean rooms and certain electronic, pharmaceutical and chemical manufacturing facility rooms with special contamination control requirements.","PeriodicalId":231726,"journal":{"name":"Industrial Virtual Reality: Manufacturing and Design Tool for the Next Millennium","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127475717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of a Telemanufacturing Test Bed","authors":"L. Abdel-Malek, V. Batra","doi":"10.1115/imece1999-0164","DOIUrl":"https://doi.org/10.1115/imece1999-0164","url":null,"abstract":"\u0000 A Telemanufacturing facility has been developed to test virtual manufacturing concepts across the Internet. The essence of this research is a web site/service provider to aid manufacturers, especially small and medium size, in the different production functions of concern. The web site capitalizes on the advances in virtual reality technologies to enable enterprises to gain flexibility and competitiveness. Through this web site companies/users will be able to access a variety of services available within this facility. This web site initially will act as a test bed and a resource center for enterprises to base design and manufacturing decisions as well as utilize technologies available globally. The test bed currently incorporates three facilities, Rapid Prototyping, make or buy decision support system, and manufacturing cell development. Using this facility it will be possible to evaluate the functioning of the Telemanufacturing infrastructure and also highlight the problems and deficiencies associated with the system.","PeriodicalId":231726,"journal":{"name":"Industrial Virtual Reality: Manufacturing and Design Tool for the Next Millennium","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123990018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and Utilization of Virtual Machines and Processes","authors":"Z. Bzymek","doi":"10.1115/imece1999-0167","DOIUrl":"https://doi.org/10.1115/imece1999-0167","url":null,"abstract":"\u0000 Virtual Models (VMd), Virtual Machines (VMn) and Virtual Processes (VP) are becoming more and more useful tools in manufacturing design, research and development of products. They give possibility to investigate manufacturing and production problems prior to building a physical model or prototype of the machine. Virtual Machines and Virtual Processes are technologies used in the design of machining equipment and in looking at production processes. They consist of a group of recently developed techniques and approaches that allow the construction of machine computer models and the simulation of the fabrication process. What makes this group of manufacturing technologies special is that they allow the checking of machining and production parameters before actual prototypes and their specific tooling are manufactured. The possibility of using these virtual manufacturing techniques could result in great savings of both time and money. In general, virtual manufacturing promises shorter design cycles with more design iterations, leading to an optimal design and better use of resources. The end goal of any virtual manufacturing is to produce a virtual model of a machine that will virtually make the part from its database file containing the geometrical description of a physical object in terms of pre-defined geometric entities. The actual manufacturing hardware provides the physical means to machine the part, which Virtual Machining allows making the as a computer model. Special software is employed to bridge the gap between the CAD data and the virtual manufacturing system. Such software should control various parameters such as the rate at which the positioning system proceeds, the tool path, the thickness of the layer of the material for removal and/or length of the path, the slice length, and others. Virtual manufacturing provides a means of motion control and easy manipulation of various manufacturing hardware.\u0000 The methods and software described in this paper allow the creation of different kinds of milling and grinding machines which are later compared with the actual existing machines and the parts produced by them. Three virtual systems are presented in this paper. One system was compared to the actual system operating in the CAD&CAM and Expert Systems Laboratory, and another was designed for stereoscopic view experiment. The third is a new machine that is in the design process. Also some examples of workpiece finish produced by virtual machining are described.\u0000 The work presents an effort to extend virtual manufacturing techniques in design, testing demonstration and manufacturing equipment and processes as well as the teaching of design and manufacturing. The work was conducted at the University of Connecticut using Silicon Graphics systems equipped with inventor, GL library and C compilers.","PeriodicalId":231726,"journal":{"name":"Industrial Virtual Reality: Manufacturing and Design Tool for the Next Millennium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116443510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"VRHose — Virtual Hydraulic Hose Routing Design","authors":"Kurt A. Chipperfield, J. M. Vance","doi":"10.1115/imece1999-0160","DOIUrl":"https://doi.org/10.1115/imece1999-0160","url":null,"abstract":"\u0000 Hydraulic hoses, which are used to transport high pressure hydraulic fluid, are key components in many large industrial vehicles. In the design of an industrial vehicle, designers must allow sufficient space for hydraulic hoses to pass through the vehicle. Because these hoses are typically stiff and do not bend easily, planning the routing of the hoses around components in the vehicle is challenging. Currently designers use CAD programs to design vehicles and rely on past experience to plan hose routes and allow sufficient space for the hoses in a new vehicle. Later, during the prototype build, the actual hoses are fit and cut to length to determine exact specifications. This paper describes the program VRHose which provides the designer with a three-dimensional interface to aid in planning hose paths. VRHose allows designers to lay out hose routes through the vehicle by defining points in space which constrain the hose path. Virtual reality (VR) is used as the human-computer interface to provide three-dimensional viewing and interaction with the digital models. The initial development of VRHose has concentrated on providing the user with a three-dimensional input and evaluation tool to lay out hose routings. Future versions of VRHose will include hose material properties which will constrain the hose paths to those which are feasible.","PeriodicalId":231726,"journal":{"name":"Industrial Virtual Reality: Manufacturing and Design Tool for the Next Millennium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116527527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Digital Humans in Virtual Environments","authors":"Andrew Yee, K. Nebel","doi":"10.1115/imece1999-0169","DOIUrl":"https://doi.org/10.1115/imece1999-0169","url":null,"abstract":"\u0000 This paper discusses the cooperative research and development work between Delphi Interior Systems (formerly known as Delphi interior & Lighting Systems) and the U.S. Army’s Tank Automotive & Armaments Command, Research, Development, and Engineering Center (TARDEC). Technical Areas addressed include real time human interaction, scripted simulations, alternative approaches to scripting, digital human factor analysis, and how ergonomic software interfaces with virtual manufacturing/simulation environments.","PeriodicalId":231726,"journal":{"name":"Industrial Virtual Reality: Manufacturing and Design Tool for the Next Millennium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129462885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetic Calibration by Tetrahedral Interpolation","authors":"William Briggs","doi":"10.1115/imece1999-0155","DOIUrl":"https://doi.org/10.1115/imece1999-0155","url":null,"abstract":"\u0000 This paper presents a method for discovering a work area’s magnetic characteristics using relatively sparse data from a magnetic tracker. It then explains a method based on creating tetrahedrons to create a lookup table used in compensating for the positional data component quickly during runtime. The paper also describes initial “before” and “after” results for a noisy lab, including visuals and statistical data. Finally new techniques are discussed for further refinement and future development.","PeriodicalId":231726,"journal":{"name":"Industrial Virtual Reality: Manufacturing and Design Tool for the Next Millennium","volume":"471 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126065954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Industrial Virtual Reality Engineering Applications","authors":"D. Rantzau, R. Breining, O. Riedel, Ulrich Haefner, Holger Scharm, Andreas Wierse, Ulrich Lang","doi":"10.1115/imece1999-0158","DOIUrl":"https://doi.org/10.1115/imece1999-0158","url":null,"abstract":"\u0000 Virtual Reality (VR) in conjunction with Immersive Projection Technology (IPT) are well introduced and highly accepted in the international society of institutional research. But does the (manufacturing) industry share this excitement about recent stereo projection technology? What are the key factors of successfully creating a VR solution with production quality? How to identify fields of application and how to get return on invest?\u0000 These questions will be addressed especially for the automotive industry. While some of the considerations hold for other manufacturing industries as well, some do not.\u0000 Problems and solutions will be discussed on sample installations and applications for the automotive industry. These VR systems help engineers to deal with different problems:\u0000 • evaluation of exterior car design,\u0000 • analysis of thermal comfort in a car cabin,\u0000 • visualization of a production line\u0000 • acceptance of tools for deep drawing\u0000 We will outline the different projection and software technologies used for these engineering tasks as well as the user interface aspects, because there is a special correlation between used projection technology and useful user interaction. The careful design of a special purpose 3D user interface is one of the keys for user productivity and user acceptance.","PeriodicalId":231726,"journal":{"name":"Industrial Virtual Reality: Manufacturing and Design Tool for the Next Millennium","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131451585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interactive Product Simulation Environment for Assessing Assembly and Maintainability Tasks","authors":"T. Fernando, P. Wimalaratne, Kevin Tan, Norman Murray","doi":"10.1115/imece1999-0173","DOIUrl":"https://doi.org/10.1115/imece1999-0173","url":null,"abstract":"\u0000 This paper presents the design and implementation of an interactive product simulation environment for supporting interactive assembly and maintenance tasks. The system architecture of the constraint-based virtual environment is based on the integration of components such as OpenGL Optimizer, Parasolid geometric kernel, a Constraint Engine, an Assembly Relationship Graph (ARG) and a task model. The approach presented in this paper is based on pure geometric constraints. Techniques such as automatic constraint recognition, constraint satisfaction, constraint management and constrained motion are employed to support interactive assembly operations and realistic behaviour of assembly parts. The user inputs are handled using a task model based on Augmented Transition Networks (ATN). The current system has been evaluated using two industrial case studies.","PeriodicalId":231726,"journal":{"name":"Industrial Virtual Reality: Manufacturing and Design Tool for the Next Millennium","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134445235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Some Commercial VR Environments: Trends and Directions","authors":"A. Hudson, J. Curtis, P. Banerjee, B. Dodds, A. Banerjee, T. DeFanti","doi":"10.1115/imece1999-0163","DOIUrl":"https://doi.org/10.1115/imece1999-0163","url":null,"abstract":"\u0000 Some of the commercially available software systems for VR applications are evaluated for a number of desired features. These features are useful in determining the choice of software while developing a VR application. The capabilities and drawbacks of the software systems are highlighted using a grading procedure and the current trends and future needs in VR software are discussed.","PeriodicalId":231726,"journal":{"name":"Industrial Virtual Reality: Manufacturing and Design Tool for the Next Millennium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131045615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}