Software > Zencrack > Overview > Under development

Under development

Current development areas for Zencrack include:

  • Mixed hex and tet re-meshing for crack insertion into an uncracked mesh.
  • Implementation of a non-linear Kujawski-Ellyin crack growth law.
    • Ref: M.Lepore, F.Berto, D.Kujawski, Non-linear models for assessing the fatigue crack behaviour under cyclic biaxial loading in a cruciform specimen, Theoretical and Applied Fracture Mechanics, Volume 100, 14-26, April 2019.
  • Implementation of crack growth direction from stress intensity factors based on the work of Richard et al.
    • Ref: H.A.Richard, M.Fulland, M.Sander, Theoretical crack path prediction, Fatigue Fract Engng Mater Struct 28, 3-12, 2005.
  • Extension of the processing available for interaction integrals to allow them to be used to drive a crack growth analysis.
  • Support for the Ansys option for specifying the auxiliary field solution when calculating interaction integrals: mixed, plane stress or plane strain.
  • Re-working of some of the options on the *ENERGY RELEASE RATE keyword to accommodate some of the above changes and to allow future additions.
  • Creation of an output set of crack-blocks that are "ready to transfer".

Current development areas for the Zencrack GUI include:

  • Improved performance for large medhes (faster import and manipulation).
  • Import and optional display of the material regions defined in a mesh.
  • Identification of disconnected mesh regions.
  • Labelling of profiles when displaying crack growth profile results.
  • Labelling of splines (Input Tab crack front splines and Display Tab splines).
  • Ability to add multiple meshes into one viewport.
  • Ability to display some types of surface definitions.
  • Re-working of the Energy Release Rate screen to accommodate the changes described above.
  • New input and preview options to support mixed hex and tet re-meshing for crack insertion into an uncracked mesh.

 

Elliptic crack position and ring preview

Definition of elliptic crack position plus ring preview

Ring preview

Ring elements and crack front node position preview

Placement of crack into a specific region

Placement of crack into a specific region

Preview of crack front nodes with crack in a specifed region

Preview of crack front nodes; crack in a specifed region

Connecting rod, crack definition and remeshed region

Connecting rod, crack definition and remeshed region

Bracket, crack definition and remeshed region

Bracket, crack definition and remeshed region