SIMULIA Integration Partner
Using fairly versatile GUI and Zentech’s proprietary ‘crack-block’ methodology in Zencrack software, it is easy to quickly generate 3D focused finite element models of cracked components from User supplied uncracked component (.inp) meshes. Zencrack generates a new input file of the cracked component, runs Abaqus, extracts results from the Abaqus output file and processes them to provide energy release rates and stress intensity factor distributions. Zencrack also has a inbuilt plug-in capability for Abaqus/CAE. Currently new features are being developed which would allow to insert cracks directly in the geometry of a component and then create an FE mesh of combined tet and hex cracktip collapsed hex elements.
For static or transient loading without crack growth, Zencrack can evaluate and report SIFs, j-integrals and T-stresses along one or more crack fronts. Both linear and non-linear analyses can be undertaken using a range of the available capabilities in Abaqus/Standard such as Contact, Friction, etc. Zencrack is now fully GUI driven both for pre and post processing.
For crack growth analysis, Zencrack predicts the magnitude and direction of 3D crack growth along each crack front and automatically advances each crack through the F.E model. Several options are available for crack growth data definition including a user subroutine capability for complex proprietary material data. A powerful, yet flexible ‘load system’ approach is provided for defining load histories which may include multiple load spectra, complex thermo-mechanical and non-linear loading effects with fatigue and/or time dependent crack growth.