An arrangement for controlling a coupled hybrid dynamic system (70',72) comprising modeled components in a virtual model and physical components, the arrangement comprising: a physical test rig configured to drive the physical structural components and generate a test rig response comprising a coupling response corresponding to an input to the virtual model and a convergence response that is compared to an output of the virtual model; a storage device; and a processor operable with the storage device to store the virtual model of a complementary system to the physical structural components, the virtual model comprising a model of a disembodied assembly comprising a plurality of disembodied assemblies, the processor configured to: control the physical test rig to drive the physical structural components and generate a test rig response comprising a coupling response corresponding to an input to the virtual model and a convergence response that is compared to an output of the virtual model, and applying a virtual drive to the model of the disembodied assembly using a processor and obtain a virtual model response; obtain a virtual dynamic response for the disembodied assembly using the virtual drive applied to the model of the disembodied assembly and the virtual model response; obtain a combined virtual dynamic response matrix for the plurality of disembodied assemblies using the virtual dynamic response for the disembodied assembly repeatedly in the virtual dynamic response for the plurality of disembodied assemblies; obtain a first dynamic response using the drive of the physical structural components and the coupling response; obtain a second dynamic response using the drive of the physical structural components and the convergence response; obtain a dynamic response matrix by multiplying the combined virtual dynamic response for the plurality of disembodied assemblies and the first dynamic response; and obtain the combined system dynamic response model using the dynamic response matrix and the second dynamic response. a physical test rig configured to drive the physical structural components and generate a test rig response comprising a coupling response corresponding to an input to the virtual model and a convergence response that is compared to an output of the virtual model; a storage device; and a processor operable with the storage device to store the virtual model of a complementary system to the physical structural components, the virtual model comprising a model of a disembodied assembly comprising a plurality of disembodied assemblies, the processor configured to: control the physical test rig to drive the physical structural components and generate a test rig response comprising a coupling response corresponding to an input to the virtual model and a convergence response that is compared to an output of the virtual model, and applying a virtual drive to the model of the disembodied assembly using a processor and obtain a virtual model response; obtain a virtual dynamic response for the disembodied assembly using the virtual drive applied to the model of the disembodied assembly and the virtual model response; obtain a combined virtual dynamic response matrix for the plurality of disembodied assemblies using the virtual dynamic response for the disembodied assembly repeatedly in the virtual dynamic response for the plurality of disembodied assemblies; obtain a first dynamic response using the drive of the physical structural components and the coupling response; obtain a second dynamic response using the drive of the physical structural components and the convergence response; obtain a dynamic response matrix by multiplying the combined virtual dynamic response for the plurality of disembodied assemblies and the first dynamic response; and obtain the combined system dynamic response model using the dynamic response matrix and the second dynamic response. control the physical test rig to drive the physical structural components and generate a test rig response comprising a coupling response corresponding to an input to the virtual model and a convergence response that is compared to an output of the virtual model, and applying a virtual drive to the model of the disembodied assembly using a processor and obtain a virtual model response; obtain a virtual dynamic response for the disembodied assembly using the virtual drive applied to the model of the disembodied assembly and the virtual model response; obtain a combined virtual dynamic response matrix for the plurality of disembodied assemblies using the virtual dynamic response for the disembodied assembly repeatedly in the virtual dynamic response for the plurality of disembodied assemblies; obtain a first dynamic response using the drive of the physical structural components and the coupling response; obtain a second dynamic response using the drive of the physical structural components and the convergence response; obtain a dynamic response matrix by multiplying the combined virtual dynamic response for the plurality of disembodied assemblies and the first dynamic response; and obtain the combined system dynamic response model using the dynamic response matrix and the second dynamic response.