Smart systems are interdisciplinary technologies that implement autonomous structural systems, which can independently adjust to changing boundary conditions. All mechanical engineering constructions can be used as application scenarios, for which their vibrational behaviour, sound radiation, contour and geometric properties, or even damage tolerances should be actively manipulated. To control the high functioning of smart systems, a detailed numerical system characterization is necessary in the earlier design phase. Our research goal is to improve and expand the current methods for multi-physical, overall system simulation. On one hand, we are investigating how the complex relationship (e.g. the coupling of electrical and mechanical domains) of a smart system can be displayed in a more numerically efficient manner, e.g. through use of a metamodel. On the other hand, we are researching the use of acoustic target functions (e.g. the calculation of the radiated sound power from structural vibrations) in the design of smart systems.