Analysis of Elastic-Viscoplastic Behavior of Honeycomb Sandwich Panels Based on a Homogenization Theory for Free Edge Analysis

Takayuki Koda; Tetsuya Matsuda

doi:10.4028/www.scientific.net/KEM.535-536.357

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 535-536Analysis of Elastic-Viscoplastic Behavior of...

Analysis of Elastic-Viscoplastic Behavior of Honeycomb Sandwich Panels Based on a Homogenization Theory for Free Edge Analysis

Abstract:

In this study, the elastic-viscoplastic properties of aluminum honeycomb sandwich panels are investigated using a homogenization theory for free edge analysis. For this, the mathematical homogenization theory is reconstructed for elastic-viscoplastic analysis of honeycomb sandwich panels by introducing a traction free boundary condition. Moreover, the domain of analysis is reduced to a quarter using point-symmetry of internal structures of honeycomb sandwich panels. The present method is then applied to the analysis of macroscopic elastic-viscoplastic behavior and microscopic stress distribution of an aluminum honeycomb sandwich panel subjected to in-plane uniaxial compression. It is shown that the stress concentration arises at face/core interfaces, especially at intersections of core walls.

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Periodical:

Key Engineering Materials (Volumes 535-536)

Pages:

357-360

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.535-536.357

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Online since:

January 2013

Authors:

Takayuki Koda, Tetsuya Matsuda

Keywords:

Face/Core Interface, Homogenization, Honeycomb Sandwich Panel, Stress Concentration, Viscoplasticity

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