Abstract
Virtual assembly is a promising application of virtual reality in design and manufacturing that has drawn much attention from industry and research institutes. Physically based modeling has been an important research topic in computer graphics and virtual reality. In this paper, physically based modeling issues in virtual assembly are investigated. The specific requirements and characteristics of physically based modeling in virtual assembly versus those in traditional computer graphics are analyzed and studied. The mass properties of the assembly models are extracted from the Computer Aided Design (CAD) system while the design models are transferred from the CAD system to the virtual assembly environment. The assembly models are categorized using human strength survey data. The interaction between the parts, the environment objects, and the human are analyzed. In the fully immersed virtual environment, it is discovered that the gravity acceleration needs to be scaled down to achieve maximum realistic feeling. Finally, the benefits and limitations of physically based modeling in virtual environments are discussed.
Highlights
Virtual Reality (VR) is a synthetic environment that gives a person a sense of reality, even though the visual images of the environment may or may not exist in real life
We investigate the methods of dynamic simulation and discuss dynamic behaviors of objects in the virtual environment that can contribute to the assembly design evaluation and analysis operations
In our virtual assembly environment, we organize parts into three categories determined by weight: part able to be lifted by one hand, part able to be lifted by two hands, or part able to be lifted by a tool
Summary
Virtual Reality (VR) is a synthetic environment that gives a person a sense of reality, even though the visual images of the environment may or may not exist in real life. CAD assemblies are obtained from ProEngineerTM developer’s toolkit along with assembly constraints These assembly constraints are used to simulate physical constraints in VADE. The behavior of the objects should be "physically correct" This introduces the physically based modeling problems of computer graphics, especially interactive dynamic simulation. This topic has been extensively studied in the computer graphics community for several years. This is because no existing simulation paradigm is suitable for a system where human beings are involved directly. We investigate the methods of dynamic simulation and discuss dynamic behaviors of objects in the virtual environment that can contribute to the assembly design evaluation and analysis operations.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
