TY - JOUR N2 - Nowadays, noise generated by devices is a serious issue in industry and in everyday life, because it may cause health damage to humans. In this research, a cubic rigid device casing built of double-panel thin steel walls is employed to reduce noise emitted from an enclosed noise source. Double-panel structure is used because of good sound insulation it provides. There exist three main groups of noise reduction methods, i.e. passive, semi-active and active. In this paper, a semi-active modification of double-panel structure is applied and examined. The bistable actuator (solenoid) mounted between incident and radiating plates changes its state due to applied constant voltage, causing the coupling of plates. Experimentally measured natural frequencies and modeshapes of the structure are compared to the simulation results. The influence of proposed modification on dynamical properties of the structure is analyzed and discussed. L1 - http://journals.pan.pl/Content/115756/PDF/aoa.2020.132488.pdf L2 - http://journals.pan.pl/Content/115756 PY - 2020 IS - No 1 EP - 127 DO - 10.24425/aoa.2020.132488 KW - noise control KW - vibration control KW - double-panel structures KW - active casing KW - natural frequencies KW - modeshapes A1 - Chrapońska, Anna A1 - Rzepecki, Jarosław A1 - Mazur, Krzysztof A1 - Wrona, Stanisław A1 - Pawełczyk, Marek PB - Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics VL - vol. 45 DA - 2020.02.26 T1 - Influence of Double-Panel Structure Modification on Vibroacoustical Properties of a Rigid Device Casing SP - 119 UR - http://journals.pan.pl/dlibra/publication/edition/115756 T2 - Archives of Acoustics ER -