Understanding spurious modes of structures with voids using dynamic stiffness method

Kennedy, David ORCID: https://orcid.org/0000-0002-8837-7296, Ilanko, Sinniah and Mochida, Yusuke 2013. Understanding spurious modes of structures with voids using dynamic stiffness method. Presented at: 9th International symposium on Vibrations of Continuous Systems, Courmayeur, Italy, 21 - 26 July 2013. Proceedings of the 9th International symposium on Vibrations of Continuous Systems. pp. 37-39.

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Abstract

In another paper being presented at this symposium [1], the existence of natural frequencies and modes of a solid structure which includes an embedded negative structure is discussed. The same paper also describes the challenges associated with the presence of some spurious modes. In this paper, we explain the presence of actual and spurious modes using the exact dynamic stiffness method. We limit the analysis to structures consisting of an assembly of continuous systems (possessing both positive and negative elastic and inertial properties) which are connected at certain nodal points.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Completion
Status:	Unpublished
Schools:	Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Last Modified:	06 Jan 2024 03:54
URI:	https://orca.cardiff.ac.uk/id/eprint/67285

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