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Numerical Modeling of FMLs Subjected to a Projectile Impact

In: Computational Mechanics

Author

Listed:
  • Z. W. Guan

    (University of Liverpool, Department of Engineering)

  • W. J. Cantwell

    (University of Liverpool, Department of Engineering)

Abstract

Fibre Metal Laminate structures (FMLs) consist of thin layers of metal sheet and unidirectional fibre layers embedded in an adhesive system. They have superior material properties to resist impact loading and fatigue, in addition to the very low weight to strength ratio. Apart from the thin metal layer, the fibre layer can also be modified and replaced by other non-conventional glass fibre, such as metallic foam materials and pre-designed metal meshes made from laser forming. Optimised FMLs has huge potential in aircraft and aerospace industry. Using validated computer models to assist design and optimization of FMLs is an efficient approach to cover large variety of parameters that are likely affect the interested performances. In this paper, numerical models were developed to simulate impact behaviour of FMLs subjected to a projectile impact at a mild velocity. FMLs were made with Al 2024- O and PP/PP composites. Typical stacking configurations are A1/PP/A1, A1/PP/A1/PP/A1 and A1/PP/A1/PP/A1/PP/A1. Polypropylene was simulated as an elastic anisotropic material with specified failure stresses, Aluminum as elasto-plastic material with a specified shear failure strain/tensile failure cut-off stress, and the projectile as a rigid body. Simulated deformation and failure modes were compared with the corresponding experimental results. Also predicted relationships of the perforation energy-target thickness were compared with the related test results. Discussions on the correlation were given.

Suggested Citation

  • Z. W. Guan & W. J. Cantwell, 2007. "Numerical Modeling of FMLs Subjected to a Projectile Impact," Springer Books, in: Computational Mechanics, pages 415-415, Springer.
    • Handle: RePEc:spr:sprchp:978-3-540-75999-7_215
    DOI: 10.1007/978-3-540-75999-7_215
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