Numerical simulations of low-velocity impact experiments on cross-ply CFRP beams using a heuristic boundary conditions approach with spring elements

BATMAZ O. A., Bozkurt M. O., GÜRSES E., ÇÖKER D.

3rd International Workshop on Plasticity, Damage and Fracture of Engineering Materials, IWPDF 2023, İstanbul, Türkiye, 4 - 06 Ekim 2023, cilt.61, ss.305-314 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 61
  • Doi Numarası: 10.1016/j.prostr.2024.06.039
  • Basıldığı Şehir: İstanbul
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.305-314
  • Anahtar Kelimeler: Boundary conditions, Finite element analysis, Low-velocity impact, Polymer-matrix composites
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

A high-fidelity finite element model is constructed to simulate the low-velocity line-impact experiments conducted previously by Bozkurt and Coker on [05/903]s CFRP beam specimens. In the finite element simulations, we implemented a three-dimensional continuum damage model with LaRC05 criterion for matrix cracking, and employed the built-in cohesive zone model at the 0°/90° interfaces for delamination in ABAQUS/Explicit. Recognizing the significant influence of boundary supports on the global impact response and deformation fields, we propose a heuristic approach for modeling boundary conditions, which involves replicating the experiment's boundaries by incorporating DIC data-tuned spring elements at the corresponding boundary nodes. The simulation results then demonstrated improved agreement with experimental findings in terms of global impact response, strain fields, and delamination force and displacement.