The paper describes a homogenization technique for periodic lattice structures. The analysis is performed by considering the irreducible unit cell as a building block that defines the periodic pattern. In particular, the continuum equivalent representation for the discrete structure is sought with the objective of retaining information regarding the local properties of the lattice, while condensing its global behavior into a set of differential equations. These equations can then be solved either analytically or numerically, thus providing a model which involves a significantly lower number of variables than those required for the detailed model of the assembly. The methodology is first tested by comparing the dispersion relations obtained through homogenization with those corresponding to the detailed model of the unit cells and then extended to the comparison of exact and approximate harmonic responses. This comparison is carried out for both one-dimensional and two-dimensional assemblies. The application to three-dimensional structures is not attempted in this work and will be approached in the future without the need for substantial conceptual changes in the theoretical procedure. Hence the presented technique is expected to be applicable to a wide range of periodic structures, with applications ranging from the design of structural elements of mechanical and aerospace interest to the optimization of smart materials with attractive mechanical, thermal or electrical properties.
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ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
September 24–28, 2005
Long Beach, California, USA
Conference Sponsors:
- Design Engineering Division and Computers and Information in Engineering Division
ISBN:
0-7918-4738-1
PROCEEDINGS PAPER
Homogenization of Vibrating Periodic Lattice Structures Available to Purchase
Stefano Gonella,
Stefano Gonella
Georgia Institute of Technology, Atlanta, GA
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Massimo Ruzzene
Massimo Ruzzene
Georgia Institute of Technology, Atlanta, GA
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Stefano Gonella
Georgia Institute of Technology, Atlanta, GA
Massimo Ruzzene
Georgia Institute of Technology, Atlanta, GA
Paper No:
DETC2005-84428, pp. 21-31; 11 pages
Published Online:
June 11, 2008
Citation
Gonella, S, & Ruzzene, M. "Homogenization of Vibrating Periodic Lattice Structures." Proceedings of the ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 1: 20th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C. Long Beach, California, USA. September 24–28, 2005. pp. 21-31. ASME. https://doi.org/10.1115/DETC2005-84428
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