Parametric modelling of assembled constructional bodies

Parametric definition of a complex assembled constructional model was given for finite element analysis.Combining two such model assemble methods as bottom-to-top and top-to-bottom and employing the dimensional parameters and assemble relationship among the components and parts,the parametric modelling can be implemented during the process of parameter transformation among the principal coordinates of the model and the local coordinates of the formation of components and parts.Taking the establishment of a parametric model with reasonable configuration and reliable formation as objective,a basic thought and method of defining the assemble parameters of the model of complex assembled constructional bodies was presented.