Public sources

Implementation decisions are grounded in public, vendor-published format and command documentation. The full command-by-command bibliography is maintained with the source tree.

Core references include:

• Mechanical APDL Programmer's Reference: Guide to Interfacing with ANSYS
• CDWRITE command
• SFE command
• SURF156 element
• PLANE183 element
• PLANE183 pressure-vector theory
• SECDATA beam-section definitions
• SHELL181 element
• SHELL208 element and axisymmetric force convention
• SHELL208 pressure-vector theory
• SHELL281 element
• SOLID185 element
• SOLID186 element
• SOLID187 element
• BEAM189 element
• SOLSH190 element
• Function Loader
• Coded database commands, including *PREAD
• *DIM array dimensions and STRING character capacity
• NMODIF coordinate and nodal-rotation fields
• LOCAL coordinate-system fields
• Character parameters and documented filename use
• ARCLEN nonlinear continuation
• NSUBST load-step controls
• AUTOTS automatic load stepping
• ARCTRM arc-length termination
• INVOPT inverse-static selection and unsymmetric-solver requirement

The Function Loader reference documents that saved functions use a coded equation table processed by MAPDL. It does not publish an independent opcode contract; OmniSolver MAPDL Interop therefore preserves those tables and requires a documented expression rather than interpreting the code.