Fatigue Configuration File
The fatigue configuration file is a user-defined external ASCII-file through which the data groups from results of static/modal/transient analysis of different solvers can be read.
This data is available for fatigue analysis. Previous HyperMesh versions (4.0 and below) supported only results of Nastran and Abaqus solvers. HyperMesh 5.0 and after allows you to use the results of different solvers to generate data for fatigue analysis.
- The local working directory.
- Your home directory (looks at the "HOME" environment variable).
- The HyperMesh bin directory.
Each file should consist of one or more data groups. Each group is defined by a group name (denoted by having an ‘*’ leading the group name line), followed by 1-12 data type lines.
You can comment out any line in the fatigue.cfg file by having either a ‘#’,’$’, or ‘/’ lead the line.
*My Unique Group
SX = Normal Stress X (solids)
SZ = Normal Stress Z (solids)
#SXY = Shear Stress XY (solids)
SYZ = Shear Stress YZ (solids)
SXZ = Shear Stress XZ (solids)
Notice that SY is not defined, and that SXY is commented out. HyperMesh assumes that each missing data type value is 0. In this case, both SY and SXY are considered missing.
You do not need to set SX = Normal Stress X (Solids)If the solver you are using calls for SX to be set to whatever SZ is, you can simply set SX = Normal Stress Z (Solids)
Valid Data Types
The first character in the data type identifier string determines if the group is a Stress (S), Force (F), Moment (M), or Strain (E) group. The S in SX refers to a stress group.
Stresses = SX, SY, SZ, SXY, SYZ, SXZ
Strains = EX, EY, EZ, EXY, EYZ, EXZ
Stresses = SX1, SY1, SZ1, SXY1, SYZ1, SXZ1, SX2, SY2, SZ2, SXY2, SYZ2, SXZ2
Strains = EX1, EY1, EZ1, EXY1, EYZ1, EXZ1, EX2, EY2, EZ2, EXY2, EYZ2, EXZ2
F & M = FX1, FY1, FZ1, MX1, MY1, MZ1, FX2, FY2, FZ2, MX2, MY2, MZ2
Depending on which type of group you are defining, HyperMesh assumes that any undefined data type identifiers (which are allowed) to be 0. If you provide an improper data type identifier (one not on any of the above lists), the line is ignored.
Negation
SX = Normal Stress X (solids)(SX = 0.2)
SX = -Normal Stress X (solids)
SX = Normal Stress X (solids); -1.0 (SX = -0.2 in either case)