Andersen, Lars

Dickow, Kristoffer Ahrens

Domadiya, Parthkumar Gandalal

Sorokin, Sergey

English

Andersen, Lars Vabbersgaard

    Aalborg UniversitetInfluence of Periodic Stiffenning on Flanking Noise Transmissionnumerical analysis based on various frame design of a lightweight panel structureDomadiya, Parthkumar Gandalal; Dickow, Kristoffer Ahrens; Andersen, Lars Vabbersgaard;Sorokin, SergeyPublished in:Congress Program and Abstracts inter-noise 2010Publication date:2011Document VersionPublisher's PDF, also known as Version of recordLink to publication from Aalborg UniversityCitation for published version (APA):Domadiya, P. G., Dickow, K. A., Andersen, L. V., & Sorokin, S. (2011). Influence of Periodic Stiffenning onFlanking Noise Transmission: numerical analysis based on various frame design of a lightweight panel structure.In Congress Program and Abstracts inter-noise 2010: 40th international congress and exposition on noisecontrol engineering "Sound Environment as a Global Issue" (pp. 169). The Institute of Noise Control Engineeringof Japan (NCE/J).General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright ownersand it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.            ? Users may download and print one copy of any publication from the public portal for the purpose of private study or research.            ? You may not further distribute the material or use it for any profit-making activity or commercial gain            ? You may freely distribute the URL identifying the publication in the public portal ?Take down policyIf you believe that this document breaches copyright please contact us at vbn@aub.aau.dk providing details, and we will remove access tothe work immediately and investigate your claim.Downloaded from vbn.aau.dk on: November 29, 2020

Influence of Periodic Stiffenning on Flanking Noise Transmission:numerical analysis based on various frame design of a lightweight panel structure

In this paper, a finite-element model is utilized for analysis of noise transmission in a lightweight structure consisting of a source panel subjected to external forces, a receiver panel used to measure the output, and a panel in between acting as a transmission path. Each panel consists of two plates with internal ribs, where it is assumed that the ribs are fully fixed to the plates. A parametric study is carried out on centre panel with regard to various spacing between the ribs. Solid finite elements are adopted for the structure and the computations are carried out in frequency domain in the range below 500 Hz. The responses of the receiving wall are studied under point-force excitation and diffuse-field excitation applied on the source wall. It is found that the positions of the ribs have a significant impact over flanking noise transmission. Thus, a panel with few ribs transmits vibrations in the entire frequency range, whereas a panel with periodic stiffening provides a wide band gap with a significant reduction of the transmitted energy

https://vbn.aau.dk/ws/files/52822119/Influence_of_Periodic_Stiffening_on_flanking_Noise_Transmissio_._numerical_analysis_based_on_various_frame_designs_of_a_lightweight_panel_structure.pdf

Influence of Periodic Stiffenning on Flanking Noise Transmission:numerical analysis based on various frame design of a lightweight panel structure

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