Title :
Optimization of anisotropic sandwich beams for higher sound transmission loss
Author :
Diveyev, Bohdan ; Horbay, Orest ; Nykolyshyn, Myron ; Smolskyy, Andrij ; Vikovych, Ihor
Author_Institution :
Transp. Dept., Lviv Polytech. Nat. Univ., Lviv, Ukraine
Abstract :
This study aims to predict the vibration damping and sound transmission properties of composite laminated thin-walled structures with the attached dynamic vibration absorbers systems. In this paper, the effective stiffness constants (the equivalent Timoshenko beam) of sandwich type laminates and their damping properties have been determined by using a procedure based on multi-level numerical schemes. Numerical evaluations obtained for the vibration of the laminates have been used to determine the displacement field for the analysis of the vibration and sound transmission properties of laminated composite beams in the lower frequency range.
Keywords :
beams (structures); damping; numerical analysis; sandwich structures; structural acoustics; structural engineering; vibration control; Timoshenko beam; anisotropic sandwich beams; composite laminated thin-walled structure; multilevel numerical scheme; sandwich type laminates; sound transmission loss; vibration absorber system; vibration damping; Acoustic beams; Damping; Materials; Noise; Power transmission; Propagation losses; Vibrations; dynamic vibration absorber; multi-level numerical schemes; sandwich type laminates; sound transmission;
Conference_Titel :
Perspective Technologies and Methods in MEMS Design (MEMSTECH), 2011 Proceedings of VIIth International Conference on
Conference_Location :
Polyana
Print_ISBN :
978-1-4577-0639-4
Electronic_ISBN :
978-966-2191-18-9
