Acoustic displacement triangle based on the individual element test

Correa, S. and Militello, C. and Recuero López, Manuel (2012). Acoustic displacement triangle based on the individual element test. "Latin American Journal of Solids and Structures", v. 9 (n. 2); pp. 133-144. ISSN 1679-7825.

Description

Title: Acoustic displacement triangle based on the individual element test
Author/s:
  • Correa, S.
  • Militello, C.
  • Recuero López, Manuel
Item Type: Article
Título de Revista/Publicación: Latin American Journal of Solids and Structures
Date: 2012
ISSN: 1679-7825
Volume: 9
Subjects:
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Mecánica y de Fabricación [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

A three node, displacement based, acoustic element is developed. In order to avoid spurious rotational modes, a higher order stiffness is introduced. The higher order stiffness is developed from an incompatible strain field which computes element volume changes under nodal rotational displacements fields. The higher order strain satisfies the IET requirements, non affecting convergence. The higher order stiffness is modulated, element by element, with a factor. Thus, the displacement based formulation is capable of placing the spurious rotational modes over the range of physical compressional modes that can be accurately captured by the mesh.

More information

Item ID: 14167
DC Identifier: http://oa.upm.es/14167/
OAI Identifier: oai:oa.upm.es:14167
Official URL: http://www.lajss.org/index.php/LAJSS/article/viewArticle/358
Deposited by: Memoria Investigacion
Deposited on: 19 Dec 2012 08:53
Last Modified: 21 Apr 2016 13:41
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