Numerical validation of composite panel impact tests

Loukham Shyamsunder, Bilal Khaled, Subramaniam Rajan, J. Michael Pereira, Paul DuBois, Gunther Blankenhorn

Research output: Contribution to journalArticlepeer-review

Abstract

Researchers have met the challenge of modeling impact events involving composite targets for a variety of applications in a variety of ways. In this paper, the theory and implementation details of an orthotropic visco-elastic-visco-plastic material model with strain rate dependence are discussed. The model is driven by experimental data from quasi-static as well as high strain rate tests, and the data is used in defining the deformation, damage and failure sub-models. Validation data is generated by shooting a hollow 50 g Al-2024 projectile at different velocities against a flat panel target made of unidirectional composite material in a 16-ply [(0/90/45/-45)2]S layup. Explicit dynamic finite element analyses of four high speed tests involving one contained (projectile rebounded) and three uncontained (projectile penetrated) impact tests show that the developed material model and modeling techniques yield reasonable and acceptable predictions.

Original languageEnglish (US)
Article number104032
JournalInternational Journal of Impact Engineering
Volume159
DOIs
StatePublished - Jan 2022

Keywords

  • Explicit dynamic finite element analysis
  • Impact testing
  • Orthotropic composite
  • Viscoplasticity

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Automotive Engineering
  • Aerospace Engineering
  • Safety, Risk, Reliability and Quality
  • Ocean Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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