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Mechanical Engineer´s Handbook P17

CHAPTER 14 VIRTUAL REALITY—A NEW TECHNOLOGY FOR THE MECHANICAL ENGINEER T\ishar H. Dani Rajit Gadh Department of Mechanical Engineering University of Wisconsin—Madison Madison, Wisconsin 14.1 14.2 14.3 INTRODUCTION VIRTUALREALITY VRTECHNOLOGY 14.3.1 VR Hardware 14.3.2 VR Software VRSYSTEMARCHITECTURE 319 319 14.6 320 320 322 323 14.7 14.5.2 14.5.3 Desktop VR Systems Hybrid Systems 325 325 325 325 325 326 VRFORMECHANICAL ENGINEERING 14.6.1 Enhanced Visualization 14.6.2 VR-CAD VIRTUAL PROTOTYPING/ MANUFACTURING AND VR 14.4 14.5 THREE-DIMENSIONAL COMPUTER GRAPHICS vs. VR 324 14.5.1 Immersive VR System 324 14.1 INTRODUCTION In recent times, the term virtual has seen increasing usage in the mechanical engineering discipline as a qualifier to describe a broad range of technologies. Examples of usage include. | CHAPTER 14 VIRTUAL REALITY A NEW TECHNOLOGY FOR THE MECHANICAL ENGINEER Tüshar H. Dani Rajit Gadh Department of Mechanical Engineering University of Wisconsin Madison Madison Wisconsin 14.1 INTRODUCTION 319 14.5.2 Desktop VR Systems 325 325 14.5.3 Hybrid Systems 14.2 VIRTUAL REALITY 319 14.6 VR FOR MECHANICAL 14.3 VR TECHNOLOGY 14.3.1 VR Hardware 14.3.2 VR Software 320 320 322 ENGINEERING 14.6.1 Enhanced Visualization 14.6.2 VR-CAD 325 325 325 14.4 VR SYSTEM ARCHITECTURE 323 14.7 VIRTUAL PROTOTYPING MANUFACTURING AND VR 326 14.5 THREE-DIMENSIONAL COMPUTER GRAPHICS vs. YR 324 14.5.1 Immersive VR System 324 14.1 INTRODUCTION In recent times the term virtual has seen increasing usage in the mechanical engineering discipline as a qualifier to describe a broad range of technologies. Examples of usage include virtual reality virtual prototyping and virtual manufacturing. In this chapter the meaning of the term virtual reality VR is explained and the associated hardware and software technology is described. Next the role of virtual reality as a tool for the mechanical engineer in the design and manufacturing process is highlighted. Finally the terms virtual prototyping and virtual manufacturing are discussed. 14.2 VIRTUAL REALITY The term virtual reality is an oxymoron as it translates to reality that does not exist. In practice however it refers to a broad range of technologies that have become available in recent years to allow generation of synthetic computer-generated and hence virtual environments within which a person can interact with objects as if he or she were in the real world reality . In other instances it is used as a qualifier to describe some computer applications such as a virtual reality system for concept shape design or a virtual reality system for robot path planning. Hence the term by itself has no meaning unless it is used in the context of some technology or application. Keeping in mind this association of VR with technology the next .