Manufacturing

souxmar ships an additive-manufacturing and subsea capability block: eighteen capabilities covering metal and polymer AM process simulation, design-for-additive-manufacturing checks, slicing, and preliminary marine/pressure-hull assessment.

They are all in-tree plugins loaded through the same C ABI a third-party plugin uses. solver.am.thermal.lpbf is dispatched exactly the way solver.elasticity.linear is, and any of them can be replaced by a higher-fidelity implementation behind the same capability id.

Two pages

• Additive manufacturing — LPBF, DED/WAAM, FFF and SLS: the process chain, the DfAM checks, G-code and build reports.
• Marine and subsea — depth and pressure conventions, pressure-hull collapse margin, seawater corrosion, and the advisory qualification dossier.

Read this first

Every model in this block is closed-form or heuristic. None of them is a finite-element solve. They are fast, deterministic and honest about their limits — each plugin's source header opens with What it computes: and What this is NOT:, and the repo docs carry a per-capability fidelity table stating what each capability must not be used for.

Concretely, that means:

Use it for	Do not use it for
Comparing two build orientations	Quoting a build
Ranking two process windows	Accept/reject on porosity
Seeing where distortion trends	Predicting distortion magnitude uncalibrated
Preliminary hull sizing	Class approval of anything

Two constants must be calibrated against a measured part before any metal-AM number here is quantitative: strain_calibration (distortion) and absorptivity (melt pool). The procedures are in the repo guide.

Units

Strict SI — metres, kilograms, seconds, watts, pascals — with one exception: temperatures are degrees Celsius, in inputs and in output fields. So layer_height: 0.001 is one millimetre and melt_temperature: 1400 is 1400 °C.

Where things live

Surface	What
CLI	souxmar run <pipeline.yaml> --plugin-path <dir>
Desktop	Manufacturing and Marine panels above the pipeline editor; they append whole stages into the open buffer
Agent	Six tools: propose_am_setup, check_printability, set_build_orientation, estimate_build_cost, apply_hydrostatic_load, check_marine_integrity
Examples	examples/am-lpbf-bracket, am-marine-propeller, am-submarine-pressure-hull, am-polymer-auv-fairing

Reference documents in the repo

• docs/MANUFACTURING.md — the domain guide: every capability, every input key with unit and default, every output component order, the fidelity table and the calibration procedures.
• docs/MARINE.md — marine conventions, collapse modes, corrosion, and the advisory-only scope statement.
• ADR-0044 — why these capabilities live under the existing five plugin namespaces instead of a new one.
• RFC-0012 — the physics roadmap: what replaces the closed-form models, and how it gets validated.