Abstract

The paper proposes a semantics knowledge modeling approach for product assembly, which is suitable for virtual reality interaction. Assembly semantics knowledge is used to express design conception, constrain the relationship between parts, and encapsulate design knowledge in semantics knowledge modeling. Using assembly semantics, the designer is able to express design intention in an engineer's language, which is natural and convenient for designer. In addition, the intelligence of the system can be promoted through the inference of implicit knowledge of semantics. These methods are implemented in the development of VIRDAS (Virtual Reality Design and Assembly System) and several assembly examples are also given.

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