Non-destructive manufacturing

  • Forging, extrusion, spring back, compression molding

  • Materials: metal, composite

  • Large deformation, coupled thermal-mechanical, implicit and explicit

  • Numerical approaches

    • Adaptivity

      • Remeshing: mesh quality & refinement, surface representation

      • Remapping: transfer internal variables through remapping functions

      • FEM: fast and robust, low order method

      • EFG: highly accurate, enhanced capabilities, slower and memory demanding​

    • SPG

      • Particle based truly meshfree method

      • Computationally stable and efficient to handle extremly large deformation

      • Only available in LS-DYNA​

Destructive manufacturing

  • Grinding, riveting, cutting, flow drill screw, self-pierce riveting, self-tapping screw, drilling

  • Materials: metal, composite

  • Workpiece-tool interaction and stress analysis

  • Numerical approaches

    • SPG

      • Multiple kernel options for different types of material failure behavior

      • Ability to help prevent “numerical failure”

      • Flexibility to incorporate different failure indicators including those in material laws

    • Peridynamics

      • Bond-based version: brittle and composite laminate material

      • Discontinuous Galerkin framework: use FEM model as input

      • Laminate model: inner-layer and inter-layer bonds