Agent skill

Curing Bc

by Cai-aa in Cai-aa/CAE-Agent-Hub

Define boundary conditions for composite curing simulation: mold contact constraints (TOOL U1=0, U2=0), springback Set-2 constraints, and Model Change demolding.

MITAuto-check passed

Install Curing Bc

skills CLI
$ npx skills add Cai-aa/CAE-Agent-Hub --skill curing-bc -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install Cai-aa/CAE-Agent-Hub curing-bc --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/Cai-aa/CAE-Agent-Hub.git skills-src && mkdir -p .claude/skills && cp -r skills-src/Skill/abaqus/composite-curing-simulation/setup/curing-bc .claude/skills/curing-bc && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
curing-bc
GitHub stars
998
Token cost
~1.4k tokens
SKILL.md length
600 words
Files
1
Skills in repo
57
Repo updated
First seen
Licence
MIT

At a glance

Define boundary conditions for composite curing simulation: mold contact constraints (TOOL U1=0, U2=0), springback Set-2 constraints, and Model Change demolding.

  • Works in 3 steps: No friction → no asymmetric resistance… → No demolding → no physical springback… → Full rotational fixity prevents any…
  • SKILL.md covers When to Invoke, Critical: Two Constraint…, TOOL Boundary Conditions… and Set-2: Springback Constraint, plus 4 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Curing Bc is an agent skill from Cai-aa/CAE-Agent-Hub. Define boundary conditions for composite curing simulation: mold contact constraints (TOOL U1=0, U2=0), springback Set-2 constraints, and Model Change demolding. Invoke when setting up BCs, constraints, or boundary conditions for curing models with mold.

Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The licence is MIT.

Example prompts

  • “/curing-bc”

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. No friction → no asymmetric resistance to thermal expansion
  2. No demolding → no physical springback mechanism
  3. Full rotational fixity prevents any angle change at the constraint

What it can do on your machine

Read from SKILL.md and the folder at commit 194ef49. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Curing Bc loads about 1.4k tokens when it runs. Until then it costs about 66 tokens; SKILL.md has 600 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~66
When it runs · the whole SKILL.md, loaded when a task matches
~1.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Cai-aa/CAE-Agent-Hub at commit 194ef49, republished under its MIT licence (© Cai-aa). 600 words, ~1,391 tokens.

Download SKILL.mdSave it as .claude/skills/curing-bc/SKILL.md (or your agent's skills folder).
name
curing-bc
description
Define boundary conditions for composite curing simulation: mold contact constraints (TOOL U1=0, U2=0), springback Set-2 constraints, and Model Change demolding. Invoke when setting up BCs, constraints, or boundary conditions for curing models with mold.

Curing Boundary Conditions

This skill defines all boundary conditions for the P8_mold curing model, including the critical distinction between mold-constrained (correct) and ENCASTRE-constrained (incorrect) approaches.

When to Invoke

  • User asks to set up boundary conditions for a curing model
  • User mentions "约束", "边界条件", "固支", "模具约束"
  • User needs to define Set-2 for springback
  • User encounters constraint-related issues (e.g., symmetric deformation)

Critical: Two Constraint Paradigms

Correct: Mold Contact Constraint (P8_mold)

The mold (TOOL-1) is fixed in space, and the composite is held only by friction contact with the mold. This allows the composite to slide and expand during curing, which is the real physical mechanism.

Curing steps (vis/rub/glassy):

*Boundary
_PickedSet328, 1, 1          # TOOL U1 = 0
_PickedSet327, 2, 2          # TOOL U2 = 0

Springback step (sp):

*Boundary, op=NEW
Set-2, 1, 1                   # Composite inner corner U1 = 0
Set-2, 2, 2                   # Composite inner corner U2 = 0
Set-2, 3, 3                   # Composite inner corner U3 = 0

The op=NEW keyword removes all previous boundary conditions and applies only Set-2 constraints. This is critical — without op=NEW, the mold constraints would remain active during springback.

Incorrect: ENCASTRE Constraint (P8_only)

The composite inner surface is fully fixed (all 6 DOFs) throughout the entire simulation. There is no mold, no contact, no demolding.

*Boundary
_PickedSet246, 1, 6           # ENCASTRE: U1=U2=U3=UR1=UR2=UR3=0

This produces center-symmetric deformation because:

  1. No friction → no asymmetric resistance to thermal expansion
  2. No demolding → no physical springback mechanism
  3. Full rotational fixity prevents any angle change at the constraint

TOOL Boundary Conditions (P8_mold Only)

The TOOL part has two constraint sets:

Set NameDOFValuePurpose
_PickedSet328U10Prevent mold sliding in X
_PickedSet327U20Prevent mold sliding in Y

Why only U1 and U2?

  • The mold is a rigid body; fixing U1 and U2 prevents translation
  • U3 (vertical) is constrained by the contact algorithm
  • Rotations are implicitly constrained by the rigid body definition
  • This allows the mold to "press down" on the composite via contact pressure

Set-2: Springback Constraint

Set-2 is a node set on the composite part at the inner corner of the L-bracket. It is activated only in the sp (springback) step.

Purpose: Prevent rigid body motion after the mold is removed. Without Set-2, the composite would float freely after demolding.

How Set-2 is defined:

  • Nodes at the inner corner of the L-bracket (near origin)
  • Selected by coordinate proximity: X ≈ 0 AND Y ≈ 0
  • Typically 9-25 nodes (the corner mesh region)

When mesh changes: Set-2 must be redefined by matching node coordinates, not node IDs, because renumbering occurs with mesh changes.

Show full SKILL.md (230 more words)Show less

Model Change: Demolding Process

The sp step includes *Model Change to remove the TOOL elements and contact pair:

*Step, name=sp
*Model Change, remove
TOOL-1.EL                   # Remove all TOOL elements
*Model Change, remove
TOOL-1, com-surface         # Remove contact surface
*Model Change, remove
TOOL-1, tool-surface        # Remove contact surface
*Boundary, op=NEW
Set-2, 1, 3                  # Apply springback constraint

Sequence in sp step:

  1. Remove TOOL elements (mold disappears)
  2. Remove contact surfaces (no more contact)
  3. Remove old boundary conditions (TOOL constraints gone)
  4. Apply Set-2 constraints (new BC for springback)
  5. Allow residual stresses to relax → springback deformation

Pressure Boundary Condition

Pressure (0.6 MPa) is applied on S2 (inner surface) during curing and removed in sp step:

** Curing steps (vis/rub/glassy):
*Dsload
P8-1.S2, P, 0.6              # 0.6 MPa on inner surface

** Springback step (sp):
** (no *Dsload — pressure removed)

Why S2 (inner surface)?

  • The pressure represents autoclave pressure pressing the composite against the mold
  • S2 is the surface facing the mold (inner surface)
  • S1 is the outer surface (contact surface with mold)

Boundary Condition Summary Table

StepTOOL-1 BCComposite BCContactPressure
visU1=0, U2=0None (friction-held)Active0.6 MPa (S2)
rubU1=0, U2=0None (friction-held)Active0.6 MPa (S2)
glassyU1=0, U2=0None (friction-held)ActiveNone
spRemoved (Model Change)Set-2: U1=U2=U3=0 (op=NEW)RemovedNone

Common Errors

ErrorCauseFix
Center-symmetric deformationUsing ENCASTRE instead of mold contactUse P8_mold_V2.inp template
Composite floats away in sp stepMissing Set-2 constraintAdd *Boundary, op=NEW with Set-2
Mold still visible in sp stepMissing *Model Change, removeAdd Model Change for TOOL elements
Over-constraint in sp stepTOOL BCs not removedUse op=NEW keyword to clear old BCs
No springback deformationPressure not removed in spRemove *Dsload in sp step

© Cai-aa, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in Skill/abaqus/composite-curing-simulation/setup/curing-bc of Cai-aa/CAE-Agent-Hub.

Open the folder on GitHubat commit 194ef49

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Curing Bc next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

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Composition Patternssickn33/agentic-awesome-skills47k1 repos~742Automated safety check: PassMIT
Eas Simulatorsickn33/agentic-awesome-skills47k1 repos~6kAutomated safety check: NotesMIT

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Questions about Curing Bc

What does Curing Bc do?

Define boundary conditions for composite curing simulation: mold contact constraints (TOOL U1=0, U2=0), springback Set-2 constraints, and Model Change demolding. Curing Bc is an agent skill from Cai-aa/CAE-Agent-Hub. Define boundary conditions for composite curing simulation: mold contact constraints (TOOL U1=0, U2=0), springback Set-2 constraints, and Model Change demolding.

How do I install Curing Bc in Claude Code?

Run `npx skills add Cai-aa/CAE-Agent-Hub --skill curing-bc -a claude-code`. Or copy the skill folder (Skill/abaqus/composite-curing-simulation/setup/curing-bc in Cai-aa/CAE-Agent-Hub) into .claude/skills/curing-bc in your project. Claude Code loads it when a task matches its description.

How do I install Curing Bc in Codex?

Run `npx skills add Cai-aa/CAE-Agent-Hub --skill curing-bc -a codex`. Or copy the skill folder (Skill/abaqus/composite-curing-simulation/setup/curing-bc in Cai-aa/CAE-Agent-Hub) into .agents/skills/curing-bc in your project. Codex loads it when a task matches its description.

Can I use Curing Bc in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Cai-aa/CAE-Agent-Hub --skill curing-bc -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/curing-bc, .gemini/skills/curing-bc, .github/skills/curing-bc and .opencode/skills/curing-bc in your project.

What does Curing Bc need to run?

SKILL.md names no scripts, command-line tools or credentials: Curing Bc is instructions for the agent only.

Does Curing Bc access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Curing Bc safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Curing Bc use?

Curing Bc is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Curing Bc use?

About 1.4k tokens (SKILL.md is roughly 5.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Curing Bc?

Skills that share tags, products or a category with Curing Bc: Contact Page (thedaviddias/Front-End-Checklist, 74k stars), Psychrev Boundary Conditions (brycewang-stanford/Awesome-Journal-Skills, 1.2k stars), Soctheory Boundary Conditions (brycewang-stanford/Awesome-Journal-Skills, 1.2k stars) and Composition Patterns (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Curing Bc?

Cai-aa (a GitHub user) maintains it in Cai-aa/CAE-Agent-Hub, which has 998 GitHub stars. The repository holds 57 skills in this directory. The repository was last updated on September 30, 2026.

Source: Cai-aa/CAE-Agent-Hub on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.