Paper Title:
Investigation on Nonlinear Constitutive Relationship for a Honeycomb Sandwich Composite
  Abstract

This paper investigates nonlinear responses of honeycomb sandwich composite under externally applied loads theoretically and experimentally. In the experimental work, honeycomb sandwich composites made of an aluminum honeycomb core and glass fiber reinforced polymer (FRP) laminate surfaces were loaded under in-plane tension and out-of plane bending up to failure. Stress-strain curves or load deflection plot together with elastic moduli and ultimate strengths were obtained. An energy approach was used to establish a nonlinear constitutive relationship for the honeycomb sandwich composites. Making use of the superimposition ability of the strain energies of all of the walls of the RVE, a nonlinear constitutive relationship for the honeycomb core was obtained. The thus obtained relationship was incorporated with a laminate theory and the bridging model to analyze nonlinear responses of the honeycomb core and FRP surface sandwich composites up to failure. The composite failure was detected micromechanically, i.e., based on the failure status of its constituent aluminum core, reinforcing fiber, polymer matrix, and adhesion layer. Stiffness discount was applied respectively to the failed composing element. The predicted nonlinear stress-strain curves under tension and load-deflection relationship under three-point bending were compared with the experimental measurements. Favorable correlations have been obtained.

  Info
Periodical
Advanced Materials Research (Volumes 291-294)
Chapter
Mechanical Behavior & Fracture
Edited by
Yungang Li, Pengcheng Wang, Liqun Ai, Xiaoming Sang and Jinglong Bu
Pages
1025-1038
DOI
10.4028/www.scientific.net/AMR.291-294.1025
Citation
Q. Liu, Z. M. Huang, "Investigation on Nonlinear Constitutive Relationship for a Honeycomb Sandwich Composite", Advanced Materials Research, Vols. 291-294, pp. 1025-1038, 2011
Online since
July 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hyoung Gu Kim, Hoong Soo Yoon, Nak Sam Choi
Abstract:Theoretical formulas for effective elastic modulus and Poisson's ratio of honeycomb core materials were proposed considering the bending,...
763
Authors: H.X. Zhu
Abstract:This paper investigates the combined effects of relative density and material distribution on the elastic constants and the yield strength of...
1003
Authors: Qiong Chen
Abstract:Compressive performance of honeycomb paperboard was studied by way of FEM and verified by experiment. First, the collapsing process was...
2818
Authors: Xiao Jun Yang, Qing Shan Lan, Yu Ning Zhong
Chapter 2: Simulation and Engineering Optimization
Abstract:The theory of natural frequencies were acquired from vibration experiment, meanwhile, the first order frequencies of honeycomb sandwich...
360
Authors: Jie Lu, Guang Ping Zou, Peng Fei Yang
Abstract:In this study, based on Goodman stress correction algorithm, four point bending fatigue behavior of brazed steel honeycomb sandwich panels at...
113