• Current Topics
      • Structural Analysis - Bridges
      • Magnetic-Electrical Field Analysis & Lorentz Force
      • Contact with Adhesion
      • Multi-scale, Multi-physics Analysis & Computation
        • interfacial fracture at very small scale
        • coupling of molecular dynamic/meshfree method/finite element
        • nanocomposite/nanomaterial design and simulation
        • Phase Field Models
          • Anisotropic coarsening
          • Simplified Solidification
          • Coupling with Mechanical Analysis
    • Past Projects
      • Biofilm Growth - Biomechanical Application
      • Dynamic fracture - fast crack growth
      • Dislocation analysis
      • Damage Model-Constitutive Law
        • bonds/damage cohesive law
        • concret fracture - smooth cap model
      • Numerical method developments
        • Moving Particle Finite Element Method (MPFEM) - a new numerical method based on meshfree method and finite elements
        • large deformation
        • fast nodal integration scheme with stabilization
      • Contact algorithm
      • Damage induced crack
    • My Numerical Lab.
      • Interfacial debunding - Molecular dynamic simulation ( )
        • Problem statement
        • shear localization induced debonding(movie: .avi file)
      • 2D damage induced crack growth in bending notched concrete bar
        • Problem statement
        • Simulated crack growth and contours of damage(movie: .avi file)
        • Comparison with test
      • 3D penetration/fragmentation (penetrator is upright to the target surface, concrete)
        • front view-coutours of equivalent strain(movie: .avi)
        • back view(movie: .avi)>
      • 3D penetration of metal target (penetrator inclines to the target surface)
        • first 50 steps(movie: .avi)
        • whole process(movie: .avi)
      • Some Results from Past
        •  3D Ductile Crack growth (FE simulation)
        • 2D shear bands in a notched bar under pure bending
        • 2D interface crack growth - simulation and comparison with test
          • crack grows away from interface and along shear band
          • crack grows along interface
      • 3D simulations of the Waterway Station penetration/fragmentation test
        • problem statement
        • Single projectile penetration
          • contours of the stress(movie: .avi file)
          • contours of equivalent strain (movie: .mpeg file)
          • contours of the damage around the penetrator(movie: .avi file)
        • Multi-projectiles penetration
          • contours of the stress (movie: .avi file)
          • contours of the damage (movie: .avi file)
          • Preliminary comparison with test
            • penetration depth
            • an overview of the crator (not available for distribution)
      • Intersonic Crack Growth - A Preliminary Simulation of the Caltech's Dynamic Crack Growth Test
        • problem statement
        • Crack growth along the interfacial plane between two pieces bonded brittle material
          • contours of the stress normal to the crack plane (movie: .avi file)
          • contours of the stress parallel to the crack plane (movie: .avi file)
          • contours of the shear stress (movie: .avi file)
          • contours of the strain vertical to the crack plane -

            • movement of cohesive zone and strain shock(movie: .avi file)
        • Crack initiates - surpasses sound barrie (movie: .avi file)
        • A supersonice-like crack propagation - two stress shocks appear (movie: .avi file)
        • A crack grows initially with intersonic speed, then drops back to Rayleigh speed

          • -a phenomenon observed in seismological analysis
          • contours of the stress normal to the crack plane (movie: .avi file)
          • contours of the strain (movie: .avi file)

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      • More examples are coming soon