Physically based modeling in virtual assembly
TL;DR: The specific requirements and characteristics of physically based modeling in virtual assembly versus those in traditional computer graphics are analyzed and studied, and the gravity acceleration needs to be scaled down to achieve maximum realistic feeling.
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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.
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Citations
Virtual reality for assembly methods prototyping: a review
TL;DR: A review of the research in virtual assembly is provided and the potential to support integration of natural human motions into the computer aided assembly planning environment and results in reduced time and cost for product design are presented.
386
A review of virtual reality and haptics for product assembly (part 1): rigid parts
TL;DR: A comprehensive survey of VR and haptics for product assembly, from rigid parts to soft cables, can be found in this paper, where the major research groups, typical systems and major research issues are explored in detail, treating rigid parts and soft cables separately.
34
Combining Geometric Constraints With Physics Modeling for Virtual Assembly Using SHARP
Abhishek Seth,Judy M. Vance,James H. Oliver +2 more
- 01 Jan 2007
TL;DR: This research combines physics-based and constraint-based approaches for virtual assembly simulations where geometric constraints are created or deleted within the virtual environment at runtime to provide a solution to low clearance assembly by utilizing B-Rep data representation of complex CAD models for accurate collision/physics results.
25
A new methodology to evaluate the performance of physics simulation engines in haptic virtual assembly
Germanico Gonzalez-Badillo,Hugo I. Medellín-Castillo,Theodore Lim,James Millar Ritchie,Raymond Sung,Samir Garbaya +5 more
TL;DR: In this article, a new methodology to evaluate the performance of physics simulation engines (PSEs) when used in haptic virtual assembly applications is proposed, and two-third party PSEs (Bullet and PhysXtm) were evaluated.
Enhancing fidelity of virtual assembly by considering human factors
TL;DR: In this article, the human factors involved in the assembly process and analyzes the influence of human factors on assembly performance on the basis of a physics-based assembly method, in which the assembling part is guided by the assembly force and the physics of the interaction is simulated.
14
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