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INTERNATIONAL JOURNAL OF ENGINEERING DEVELOPMENT AND RESEARCH
(International Peer Reviewed,Refereed, Indexed, Citation Open Access Journal)
ISSN: 2321-9939 | ESTD Year: 2013

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Paper Title
Damping Estimation In Thin Walled Structures Using Finite Element Analysis
Authors
  B.Anil Kumar,  B.Murali Krishna,  A.Purender Reddy

Abstract
By performing modal analysis by finite element analysis gives us only natural frequencies and mode shapes, but not modal damping ratio values. To obtain the modal damping ratio values establishment of a constitutive relation for specific material dissipation, volume integrals of the per cycle dissipation can be used to estimate the modal damping ratios. Here, a well-known power law model for such specific dissipation is used. The development of a modal damping estimation procedure for thin-walled components using shell elements in a commercial finite element package is made. The validation of the shell element results are compared with analytical results and both the results turns out to be same. The computational approach allows complex geometries in a study of the effects of shape on damping. Then demonstration of both the stress concentrations and small tuned resonant appendages yields in increasing damping. Various thin walled structures are taken and the damping values are calculated.

Keywords- Finite Element Analysis (FEA), Damping, Modal Analysis.
Publication Details
Unique Identification Number - IJEDR1602220
Page Number(s) - 1246-1255
Pubished in - Volume 4 | Issue 2 | May 2016
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)
Cite this Article
  B.Anil Kumar,  B.Murali Krishna,  A.Purender Reddy,   "Damping Estimation In Thin Walled Structures Using Finite Element Analysis ", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.4, Issue 2, pp.1246-1255, May 2016, Available at :http://www.ijedr.org/papers/IJEDR1602220.pdf
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