DARS
Dynamics of Active and Rotating Structures
HRZZ Research projects ("IP")
lP-2019-04-54
Duration: 01.02.2020. - 31.01.2024.
Project Summary
In the last 20 years vibroacoustic quality of technical products is becoming extremely important in competative economies of EU, as well as for wellbeing of its citizens. For example, noise pollution in traffic is the second cause of rising death in European Union. Cherishing the relevant engineering disciplines and targeted education of new experts in the field is therefore important for Croatian economic development and community itself. DARS project covers two non-trivial research disciplines in the field of noise and vibrations, both from scientific and technological standpoint. First discipline is automatic regulation of noise and vibrations, with emphasis on developing new active metamaterials that can suppress noise transmission on a selective manner. Nowadays, main topic in the field is how to cancel the reciprocity principle, a common phenomenon that often characterizes linear acoustic media, as well as linear-elastic bodies. DARS project will work on developing and research on active cells of metamaterials, with hope of demonstrating the cancellation of the reciprocity effect of noise transmission through metamaterial barriers. Second subject deals with vibrations of rotating, deformable structures like propeller shafts or car tires. Such structures require better understanding and description of physical mechanisms that lead to rotating forms of vibrations and bifurcations of natural frequencies. Throughout the implementation of project DARS, the goal is to develop and research physically rigorous models for analysis of vibrating behaviour of such structures. Two research subjects are foundations for two doctoral dissertations, so that two young researchers will mold through sustaining new knowledge with help of cutting-edge research methods and equipment. Young researchers will integrate in active and productive group of experienced experts in the field of noise and vibrations, sustaining new skills and increasing their employability. Also, implementation of DARS project will motivate required funding for vibroacoustic laboratory equipment.