Artificial Intelligence - Special volume on constraint-based reasoning
VADE: A Virtual Assembly Design Environment
IEEE Computer Graphics and Applications
A Virtual Assembly Design Environment
VR '99 Proceedings of the IEEE Virtual Reality
A correct rule-based geometric constraint solver
Computers and Graphics
VMR '09 Proceedings of the 3rd International Conference on Virtual and Mixed Reality: Held as Part of HCI International 2009
An enhanced haptic assembly simulation system for the efficiency of assembly tasks
IROS'09 Proceedings of the 2009 IEEE/RSJ international conference on Intelligent robots and systems
A desktop virtual reality-based interactive modular fixture configuration design system
Computer-Aided Design
Robotics and Computer-Integrated Manufacturing
A virtual environment for complex products collaborative assembly operation simulation
Journal of Intelligent Manufacturing
Computation of components' interfaces in highly complex assemblies
Computer-Aided Design
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Assembly constraint is an important factor for product assembly. Constraint is not only necessary for accurate locating of parts but also an important way to realize assembly operation process in virtual assembly (VA) system. In this study, to realize VA reasonably, uniform representations of assembly constraint, equivalent relation between constraint and degree of freedom (DOF), and movable DOF reduction are defined. Several algorithms including based-constraint assembly relation recognition, assembly parts location solving under free and constrained spaces, and movement navigation are developed. These algorithms have been applied to integration virtual assembly environment (IVAE) software system. An example is illustrated, and the results prove that the algorithms provide a good support for the constraint treatments in IVAE and the high consistence between virtual and real assembly process is realized.