A preliminary study is conducted to reduce the number of degrees of freedom in a high-dimensional model (HDM) of an assembly structure. Certain components of the assembly structure are modeled using a Galerkin projection reduced-order model (ROM), while the remaining components are modeled as an HDM. The ROMs and HDM are combined using a domain decomposition technique, where a ROM is treated as a subdomain and the HDM is decomposed into a number of subdomains. A ROM for a structure with Dirichlet boundary conditions as parameters is constructed and used in the combined ROM and HDM model.
Saito et al. (Wed,) studied this question.