Design Square Grid Sandwich Plate Based on Equivalent Theory

Abstract:

A square grid sandwich plate is modeled as a laminate plate in this paper, and the equivalent method is proved according to natural frequencies of the grid sandwich plate and the equivalent plate. Effects of geometric and material parameters on the equivalent Young’s modulus, equivalent thickness, and equivalent density are discussed and some conclusions are obtained:(1) effects of thickness of upper and lower panels on equivalent parameters are the same; (2) keeping the total thickness of upper and lower panels a constant, the equivalent thickness reaches its maximum while thickness of upper panel is equal to that of lower panel, meanwhile the equivalent Young’s modulus and equivalent density get to their minimum values; (3) the equivalent thickness and density increase with thickness of grid sandwich core; (4) the equivalent Young’s modulus decreases while the thickness of grid sandwich core increases; (5) the equivalent Young’s modulus increases with that of the grid core; (5) the equivalent density is inversely proportional to the equivalent thickness; (6) the equivalent Young’s modulus is inversely proportional to the equivalent thickness. These conclusions are helpful to design square grid sandwich plate.

• Periodical: Applied Mechanics and Materials (Volume 248)
• Pages: 365-369
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.248.365
• Online since: December 2012
• Authors: Jin Tao Gu, Mei Ping Sheng, Fei Han
• Keywords: Design Parameter, Equivalent Theory, Square Grid Sandwich Plate

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