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LS-TaSC is a Topology and Shape Computation tool. Developed for engineering analysts who need to optimize structures, LS-TaSC works with both the implicit and explicit solvers of LS-DYNA. LS-TaSC handles topology optimization of large non-linear problems, involving dynamic loads and contact conditions.


General Capabilities


  • Tight integration with LS-DYNA
  • Large models with millions of elements
  • Manufacturing constraints
    • Symmetry
      • Extrusion
      • Casting
      • Forging
  • Global constraints
  • Generalized constraints
  • Multiple load cases and disciplines
  • Multiple design parts

Topology Optimization

Topology optimization of solid designs and Topometry optimization of shell designs


  • Element types
    • Solids: First-order hexahedrons and tetrahedral elements
    • Shells: First-order quadrilateral and triangular elements
  • Combination of statics, NVH and impact
    • Homogenization of internal energy density
    • Maximization of fundamental frequency
  • Postprocessing
    • Iso-surfaces
  • Methodologies
    • Optimality Criteria
    • Projected Subgradient method
    • Multi-point method for constrained optimization

Free Surface Design

The surface of a solid part can be redesigned to reduce stress concentrations.


  • Objective: Uniform surface stress
  • Parameters: Position of each node in the design surface
  • Geometry definitions
  • Edge smoothing

Further Information