Active vibration control of timber floors and humaninduced excitations

Timber offers numerous benefits due to its low self-weight, particularly when used as structural element. However, they also present certain disadvantages in building physics, especially concerning airborne and impact sound insulation issues. One approach to address this challenge is to provide additional mass, particularly in floor constructions. This practice, in turn, compromises the dynamic behaviour in the low-frequency range, which is essential for the serviceability of a slab, and highlights the relevance of related solutions for timber construction. To manipulate the dynamic response of structures is a challenge that can be solved in different ways. The variability of excitation and the randomness of human-induced vibrations concerning time and location placed the focus of the present research on actively controlled systems. It has already been shown that floor vibrations can be actively influenced in a specific manner. Regarding the fundamentals of active vibration control, it is possible to act against undesired vibrations. The research objective presented here is to demonstrate how various active vibration elements can positively influence the vibration characteristics and ensure the comfort, or rather the serviceability, of the floors. ... mehrThe main focus is the performance of these active elements in relation to human-induced excitations.