Effective construction of physically based virtual environments

1998 ◽  
Author(s):  
Xiaoke Zhang
Keyword(s):  
Virtual Environments ◽  
Physically Based

SHARP: A System for Haptic Assembly and Realistic Prototyping

2006 ◽  
Author(s):  
Abhishek Seth ◽  
Hai-Jun Su ◽  
Judy M. Vance
Keyword(s):  
Virtual Environments ◽  
Virtual Prototyping ◽  
Mechanical Assembly ◽  
Swept Volumes ◽  
Physically Based ◽  
Product Design Process ◽  
Costly Product ◽  
Easy Integration ◽  
Realization Process ◽  
Product Realization

Virtual Reality (VR) technology holds promise as a virtual prototyping tool for mechanical assembly; however, several developmental challenges still need to be addressed before virtual prototyping applications can successfully be integrated into the product realization process. This paper describes the development of SHARP (System for Haptic Assembly & Realistic Prototyping), a portable VR interface for virtual assembly. SHARP uses physically-based modeling for simulating realistic part-to-part and hand-to-part interactions in virtual environments. A dual handed haptic interface for realistic part interaction using the PHANToM® haptic devices is presented. The capability of creating subassemblies enhances the application’s ability to handle a wide variety of assembly scenarios. Swept volumes are implemented for addressing maintainability issues and a network module is added for communicating with different VR systems at dispersed geographic locations. Support for various types of VR systems allows an easy integration of SHARP into the product realization process resulting in faster product development, faster identification of assembly and design issues and a more efficient and less costly product design process.

Future Haptic Science Encyclopedia: Realistic Stable Haptic Interaction with Highly Deformable Objects Using HIRO-II

2006 ◽  
Vol 18 (4) ◽  
pp. 409-417 ◽  
Author(s):  
Osama Halabi ◽  
◽  
Vytautas Daniulaitis ◽  
Haruhisa Kawasaki ◽  
Tetsuya Mouri ◽  
...  
Keyword(s):  
Virtual Environments ◽  
Subjective Evaluation ◽  
Haptic Interface ◽  
Deformable Objects ◽  
The Finite Element Method ◽  
Haptic Interaction ◽  
Physically Based ◽  
The Stability ◽  
Displacement Approach ◽  
Objective And Subjective Evaluation

Maintaining a stable haptic interaction with virtual environments, especially with physically-based deformable objects, has long been an active area of research. We address this issue by presenting a comprehensive haptic system architecture and virtual reality simulation, where a physically-based modeling using the Finite Element Method (FEM) combined with an “elementary displacement” approach has been implemented. This approach ensures the stability of haptic interaction with deformable objects and considers interaction with multipoints contacts. The Future Haptic Science Encyclopedia (FHSE) we developed to verify our proposal and demonstrate the new haptic interface HIRO II. We also present an objective and subjective evaluation of FHSE simulation.

Enhancing a Traditional Ergonomics Tool With Capabilities and Algorithms From Immersive Environments

2007 ◽  
Author(s):  
OkJoon Kim ◽  
Uma Jayaram ◽  
Sankar Jayaram ◽  
Craig Palmer
Keyword(s):  
Engineering Design ◽  
Virtual Environments ◽  
Virtual Environment ◽  
Information Exchange ◽  
Ease Of Use ◽  
Human Model ◽  
Evaluation Tools ◽  
Physically Based ◽  
Immersive Environment ◽  
Constraint Based Modeling

This paper presents our continuing work in approaches to link traditional, commercially available ergonomics evaluation tools with virtual environment tools for providing enhanced capabilities for engineering design. Ergonomic evaluation tools in engineering design are fairly mature and are used in important and specific ways to analyze human model postures in industry. The promising capabilities of immersive environment tools such as realistic environments and interactions, constraint-based modeling, and physically-based modeling are attractive to industry but have so far been available only in environments separate from the traditional ergonomics analysis tools. Our research seeks to create well-integrated synergistic approaches that will complement traditional ergonomics tools with a careful assimilation of capabilities and algorithms from a virtual environment. The information exchange, representations, communication, and computational issues involved in achieving this connectivity are discussed in this paper. We demonstrate this functionality between a commercial ergonomics tool and an immersive assembly system. It is anticipated that this synergy between an ergonomics tool and a virtual environment will lead to breakthroughs and ease of use benefits similar to those that have now been obtained by the close integration of CAD and virtual environments.

Using physically based models for collision‐sound synthesis in virtual environments

1994 ◽  
Vol 95 (5) ◽  
pp. 2967-2967 ◽  
Author(s):  
Jeng‐Feng Lee ◽  
I‐Yue Shen ◽  
John Crouch ◽  
Walt Aviles ◽  
David Zeltzer ◽  
...  
Keyword(s):  
Virtual Environments ◽  
Sound Synthesis ◽  
Physically Based ◽  
Physically Based Models
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