Abstract: The parts structure is a synthesis of geometrical element and design intent attached to geometrical element. It is an important issue of the evolutionary design technology research for parts structure to how to effectively realize uniform representation of both. First, coupling modelon is defined to express structure coupling constraint abstractly. Based on that, a coupling semantics relation graph is given to show the parts structure model for evolutionary design. Then, an operation method for coupling semantics which focus on the process evolution is presented. This method integrates evolutionary operation and linkage-evolutionary algorithm for structure model rebuilding to realize the dynamically editing for parts structure evolutionary model.

Key words: Evolutionary design, Linkage-evolutionary Coupling semantics, Structure modeling Creative design