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These elements are ignored, and the contour integrationĪs a workaround for this contour integral limitation there are two approaches:Īllow the calculation of the contour integrals but do not use them for driving the analysis. *** WARNING *** CP = 1.061 TIME= 12:31:14Ĭontour integration for crack 1 includes surface elements which are not That is not supported, Crack 1, crack tip node 549, element type 154. *** WARNING *** CP = 0.796 TIME= 12:31:13Įrror with CINT calculation: crack tip node attached to element type

Version 12.1 gives the second of the following warning types only, versions 13.0, 14.0 give both the following warning types: Ignored, and the contour integration results may not be correctly Includes surface elements which are not supported. *** WARNING *** CP = 1.342 TIME= 15:07:29įracture parameter calculation issue: Contour integration for crack 1 Details of the warnings depend on the Ansys version. out files that surface elements are not supported in contour integral evaluation, but will still carry out the contour integral evaluation and report potentially invalid results. Note that Ansys will generate warnings in the. Since Zencrack only updates the surface without regard for the way in which that surface is used, this can cause incorrect contour integral evaluation without any warning being generated in the Zencrack. This leads to incorrect contour integral evaluation for any crack front node connected to a surface with pressure applied in this way.

However, contour integral evaluation in Ansys (up to at least v2021R2) does not support surface load applied via SURF154 elements. Such surfaces are updated if they are on target crack-block elements (from Zencrack 7.7-2). When including pressure load on the surfaces of brick elements, Ansys Workbench generates the load via SURF154 elements. Note that from version 7.9-3 the Zencrack setup program requests information about the number of processors and configures the zencrack.ini file accordingly during the installation process. If the -np parameter is defined using both methods, the command line value takes precedence. The parameters should be surrounded by quotes. This defines parameters to be passed to the Ansys command line for that particular Zencrack job.

Refer to the file itself (located in the Zencrack tools folder) or the Installation And Execution Manual for more information about this variable. The -np option can be added to this parameter.