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29 July 2004 Vibration and sound radiation from a sandwich cylindrical shell with prismatic core
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Abstract
The vibration and the sound radiation of cylindrical shells with cellular core is here analyzed. The considered structure is composed of a repeated unit cell and can be classified as a Linear Cellular Alloy (LCA) core. The unit cells are of a tetrahedral configuration, arranged according to a honeycomb lay-out. The considered configuration has previously been proposed for core designs of sandwich beams with superior structural properties. In here, the effects of the core configuration on the structural-acoustic behavior of the considered sandwich shell is investigated through a FE model. The FE model is created with ANSYS, a commercially available Finite Element Analysis (FEA) package. The sensitivity of the shell's dynamic characteristics to changes in the geometric properties of the core is investigated. An optimization problem is formulated to determine the core configuration which minimizes, within a target frequency range, the sound radiation of the shell in an unbounded fluid environment.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sang Min Jeong and Massimo Ruzzene "Vibration and sound radiation from a sandwich cylindrical shell with prismatic core", Proc. SPIE 5386, Smart Structures and Materials 2004: Damping and Isolation, (29 July 2004); https://doi.org/10.1117/12.540351
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