Identification of a computationally efficient numerical model for honeycombs using a multi-objective taguchi optimization process

S. Amine, A. S. Milani, James Nemes

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Due to their high specific strength and stiffness, honeycomb sandwich structures are used in impact-resistance applications. Their structural efficiency depends to a great extent on the lightweight core separating the face sheets and providing overall high stiffness. Detailed finite element (FE) modelling of the penetration of honeycombs by a projectile can be occasionally complex and computationally expensive. In this paper, a computationally efficient equivalent numerical model for a hexagonal honeycomb subjected to high-speed impacts is developed in ABAQUS/Explicit, based on an equation-of-state model for porous media. A multi-objective Taguchi optimization is used to identify unknown material parameters in this model. It is shown that with the optimal set of parameters, the equivalent model can closely predict perforation velocities, particularly in the higher ranges, for different impact conditions, requiring less than 8% of the time needed to run a detailed FE model of the same honeycomb configuration.

Original languageEnglish (US)
Pages (from-to)169-180
Number of pages12
JournalInternational Journal of Modelling and Simulation
Volume29
Issue number2
DOIs
StatePublished - Jan 1 2009

Fingerprint

Honeycomb
Process Optimization
Numerical models
Stiffness
Sandwich Structures
Impact resistance
Sandwich structures
Projectile
Finite Element Modeling
ABAQUS
Projectiles
Equations of state
Equation of State
Penetration
Hexagon
Finite Element Model
Porous Media
Porous materials
High Speed
Face

All Science Journal Classification (ASJC) codes

  • Software
  • Modeling and Simulation
  • Mechanics of Materials
  • Hardware and Architecture
  • Electrical and Electronic Engineering

Cite this

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abstract = "Due to their high specific strength and stiffness, honeycomb sandwich structures are used in impact-resistance applications. Their structural efficiency depends to a great extent on the lightweight core separating the face sheets and providing overall high stiffness. Detailed finite element (FE) modelling of the penetration of honeycombs by a projectile can be occasionally complex and computationally expensive. In this paper, a computationally efficient equivalent numerical model for a hexagonal honeycomb subjected to high-speed impacts is developed in ABAQUS/Explicit, based on an equation-of-state model for porous media. A multi-objective Taguchi optimization is used to identify unknown material parameters in this model. It is shown that with the optimal set of parameters, the equivalent model can closely predict perforation velocities, particularly in the higher ranges, for different impact conditions, requiring less than 8{\%} of the time needed to run a detailed FE model of the same honeycomb configuration.",
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