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Assembly Planning in Virtual Environment| old_uid | 10138 |
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| title | Assembly Planning in Virtual Environment |
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| start_date | 2015/12/03 |
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| schedule | 10h30-12h |
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| online | no |
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| location_info | EuroMov |
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| summary | Virtual assembly is based on the use of computer-generated environment to assemble 3D models of mechanical parts. The objective is to test the feasibility of the assembly operations at the design stage of the product. The manipulation of the digital prototype allows improving the product design and its assemblability at the early stage of production. The use of virtual reality technology in product assembly allows shortening the product development cycle and contributes to the reduction of time-to-market considered as an important key issue in nowadays’ worldwide industrial competition. Natural interaction and the virtual environment realism have an important effect on human performance during the execution of the assembly task. Physical behavior of virtual parts and haptic sensation play an important role in human perception. Appropriate interaction techniques are necessary in order to develop the virtual parts’ behaviour that mimics the interaction with physical parts in real world. Collision detection, physically-based modelling and realistic grasping of virtual objects are the main issues investigated by researcher. However, assembling parts in virtual environment requires that 3D models of the parts do not interpenetrate during the mating phase of the assembly operation. This talk will focus on the very recent research development about the concept of “visual dynamic behavior” based on the use of spring-damper model applied for the manipulation of separated parts and subassemblies. The talk will focus on the following aspects: - Overview of the research in the domain of virtual assembly and associated techniques to perform assembly planning with the manipulation of virtual prototype of parts, - Physically-based modeling and the avoidance of the interpenetration of virtual objects, - The concept of “Visual Dynamics” - The implementation of spring-damper model to couple the visual and the tracked models of parts, - The technique of precluding the interpenetration of parts and the implementation of spring- damper model for the manipulation of subassemblies, - Presentation of validation techniques for the approach of Virtual assembly Keywords: Haptic feedback, physically-based modeling, replication of parts, spring-damper model, virtual assembly planning, virtual oriented center of mass, visual dynamics. |
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| responsibles | Hoffmann, Marin |
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