CalculiX Sizing Optimization

Two-stage sizing/parameter optimization: minimize mass subject to stress, displacement, or natural-frequency constraints by editing scalar design variables in place (shell thickness, beam section, material E/nu/density, load magnitude). The mesh and geometry never change — only scalar cards.

This is sizing optimization, not topology optimization. It thins sections; it does not redistribute material in space.

When to Use

Use when an agent must lighten a CalculiX shell or beam model while keeping von Mises stress and displacement within limits (static deck), or must lighten it while keeping a natural frequency above a resonance floor (modal deck). Driven by the optimize_structure_tool MCP tool.

Do NOT use for: