Delamination and Fracture Modeling

We study crack and delamination initiation and propagation in composite and smart materials, from the laminate scale down to graphene. Layerwise spectral finite elements are combined with cohesive-zone models to simulate progressive delamination and debonding.

1. Delamination growth in laminated strips
   • Related Publication(s):
     D. K. Siorikis, C. S. Rekatsinas, N. Chrysohoidis, D. A. Saravanos, “An Extended Layerwise Spectral Finite Element Framework for Delamination Growth Simulation in Laminated Composite Strips”, Composite Structures, 276, 114452, 2021.
2. Progressive debonding in sandwich structures
   • Related Publication(s):
     D. K. Siorikis, C. S. Rekatsinas, D. A. Saravanos, “Progressive Debonding Analysis of Sandwich Composite Strips Using a Cohesive-Layerwise Spectral Finite Element Model”, International Journal of Solids and Structures, 243, 111560, 2022.
3. Delamination effects on dynamic and wave response
   • Related Publication(s):
     C. S. Rekatsinas, N. Chrysohoidis, D. A. Saravanos, “Investigation of Critical Delamination Characteristics in Composite Plates Combining Cubic Spline Piezo-Layerwise Mechanics and Time Domain Spectral Finite Elements”, Wave Motion, 106, 102752, 2021.
4. Fracture at the nanoscale
   • Related Publication(s):
     T. C. Theodosiou, D. A. Saravanos, “Numerical Simulation of Graphene Fracture Using Molecular Mechanics Based Nonlinear Finite Elements”, Computational Materials Science, 82, 56–65, 2014.

Applications

• Delamination growth in laminates
• Core-face debonding in sandwich panels
• Damage tolerance assessment
• Strength prediction of nanostructures