ANSYS APDL Parametric Naval Structure Modeling and Analysis

Problem

Naval finite element analysis often becomes repetitive when loading cases change: geometry, materials, boundary conditions, loads, and post-processing must be adjusted in APDL commands. Hand-written main.mac files are error-prone when handling node offsets, element sections, result component selection, and batch log diagnostics.

How It Works

The skill provides a structured ANSYS APDL workflow:

• Case definition: confirm structure type, geometry, material, boundary conditions, loads, and analysis type.
• Command stream generation: produce preprocessing, solution, and postprocessing commands for cases such as antype,0, antype,buckle, and arclen,on.
• Modeling rules: distinguish SHELL181 shell plates, rib webs, rib flanges, and BEAM188 beams, using secoffset and secdata for node placement and section setup.
• Result extraction: build CM components and exclude end boundary effects, such as kebanjieguo and leigujieguo.
• Diagnostics: read *.log and *.err, then interpret strength, buckling, and convergence results.

Scope

Useful for cylindrical shells, conical shells, framed plates, and beam-shell combinations in parametric naval structure analysis, especially strength, linear buckling, and nonlinear buckling. It should not replace code checks, corrosion allowance, imperfection modeling, load combination, or engineering judgment in final design decisions.