Agent skill

Curing Contact

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

Define contact pairs and friction for composite curing simulation: mold-composite contact (S1↔S4+S6), temperature-dependent friction (0.45→0.2→0.169), HARD contact property.

MITAuto-check passed

Install Curing Contact

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

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

GitHub CLI
$ gh skill install Cai-aa/CAE-Agent-Hub curing-contact --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-contact .claude/skills/curing-contact && 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-contact
GitHub stars
1k
Token cost
~1.4k tokens
SKILL.md length
534 words
Files
1
Skills in repo
57
Repo updated
First seen
Licence
MIT

At a glance

Define contact pairs and friction for composite curing simulation: mold-composite contact (S1↔S4+S6), temperature-dependent friction (0.45→0.2→0.169), HARD contact property.

  • Works in 5 steps: Friction varies spatially: Different… → L-bracket geometry: The corner region… → Thermal expansion: During heating, the… → …
  • SKILL.md covers When to Invoke, Contact Pair Definition, Contact Interaction Property and Temperature-Dependent Friction, plus 5 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Curing Contact is an agent skill from Cai-aa/CAE-Agent-Hub. Define contact pairs and friction for composite curing simulation: mold-composite contact (S1↔S4+S6), temperature-dependent friction (0.45→0.2→0.169), HARD contact property. Invoke when setting up contact, friction, or mold interaction in curing models.

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-contact”

Workflow steps

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

  1. Friction varies spatially: Different regions of the composite experience different normal pressures, leading to varying frictional…
  2. L-bracket geometry: The corner region has higher contact pressure than the arm tips, creating non-uniform constraint
  3. Thermal expansion: During heating, the composite expands and slides against the mold; friction resists this sliding asymmetrically
  4. Demolding release: When the mold is removed, the stored frictional energy releases unevenly, causing asymmetric deformation
  5. Result: Maximum displacement at free edges (arm tips), minimum at the corner — this is the correct physical pattern

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 Contact loads about 1.4k tokens when it runs. Until then it costs about 67 tokens; SKILL.md has 534 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~67
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). 534 words, ~1,401 tokens.

Download SKILL.mdSave it as .claude/skills/curing-contact/SKILL.md (or your agent's skills folder).
name
curing-contact
description
Define contact pairs and friction for composite curing simulation: mold-composite contact (S1↔S4+S6), temperature-dependent friction (0.45→0.2→0.169), HARD contact property. Invoke when setting up contact, friction, or mold interaction in curing models.

Curing Contact Setup

Define the frictional contact between the composite (P8-1) and the mold (TOOL-1). This is the physical mechanism that constrains the composite during curing and creates asymmetric springback upon demolding.

When to Invoke

  • User asks to set up contact between composite and mold
  • User mentions "接触", "摩擦", "模具接触", "contact pair"
  • User needs to change friction coefficients
  • User encounters contact-related convergence issues

Contact Pair Definition

*Surface, type=ELEMENT, name=com-surface
P8-1.S1                      # Composite outer surface (contact with mold)

*Surface, type=ELEMENT, name=tool-surface
TOOL-1.S4, S6                # Mold contact surfaces

*Contact Pair, interaction=INTER-1, type=SURFACE TO SURFACE
com-surface, tool-surface    # Master: tool, Slave: composite

Surface assignments:

SurfacePartElement FaceRole
com-surfaceP8-1 (composite)S1 (outer)Slave surface
tool-surfaceTOOL-1 (mold)S4 + S6Master surface

Why S1 on composite?

  • S1 is the element face on the outer surface of the composite
  • This is the face that physically touches the mold
  • S2 is the inner surface (where pressure is applied)

Why S4+S6 on TOOL?

  • The mold is an L-shaped bracket with two contact faces
  • S4 and S6 correspond to the two inner faces of the mold L-shape
  • Both faces must be included to capture full contact

Contact Interaction Property

*Surface Interaction, name=INTER-1
*Friction
0.45                         # Step vis: viscous state friction
*Surface Behavior, pressure-overclosure=HARD

Temperature-Dependent Friction

Friction changes with material state (temperature-dependent). Each step has a different friction coefficient:

StepTemperature RangeMaterial StateFriction Coefficient
vis25°C → 150°CViscous (rubbery)0.45
rub150°C → 180°CRubbery0.20
glassy180°C → 25°CGlassy (cured)0.169
sp25°C—N/A (contact removed)

Physics behind friction change:

  • Viscous (0.45): High friction because resin is viscous and sticky; composite strongly adheres to mold
  • Rubbery (0.20): Lower friction as resin becomes more rubbery; some slip occurs
  • Glassy (0.169): Lowest friction as material vitrifies; cured composite can slide more freely on mold

How to implement per-step friction:

*Step, name=vis
*Change Friction, interaction=INTER-1
0.45, 

*Step, name=rub
*Change Friction, interaction=INTER-1
0.20, 

*Step, name=glassy
*Change Friction, interaction=INTER-1
0.169, 

HARD Contact Behavior

*Surface Behavior, pressure-overclosure=HARD
  • HARD: Standard hard contact — no penetration allowed, no tension
  • Pressure transfers only when surfaces are in contact
  • Gap opens when pressure goes to zero (no adhesion)

Contact in Springback Step (sp)

In the sp step, contact is completely removed via Model Change:

*Step, name=sp
*Model Change, remove
TOOL-1.EL                    # Remove mold elements
*Model Change, remove
TOOL-1, com-surface          # Remove composite contact surface assignment
*Model Change, remove
TOOL-1, tool-surface         # Remove tool contact surface assignment

After Model Change:

  • No contact pair exists
  • No friction
  • Composite is free to deform (constrained only by Set-2)
  • Residual stresses drive springback deformation
Show full SKILL.md (211 more words)Show less

Why Contact Creates Asymmetric Springback

  1. Friction varies spatially: Different regions of the composite experience different normal pressures, leading to varying frictional resistance
  2. L-bracket geometry: The corner region has higher contact pressure than the arm tips, creating non-uniform constraint
  3. Thermal expansion: During heating, the composite expands and slides against the mold; friction resists this sliding asymmetrically
  4. Demolding release: When the mold is removed, the stored frictional energy releases unevenly, causing asymmetric deformation
  5. Result: Maximum displacement at free edges (arm tips), minimum at the corner — this is the correct physical pattern

P8_only vs P8_mold Contact Comparison

AspectP8_mold (Correct)P8_only (Incorrect)
Contact paircom-surface ↔ tool-surfaceNone
Friction0.45 → 0.2 → 0.169None
Contact behaviorHARDNone
DemoldingModel Change removes contactNo demolding
Composite constraintFriction (allows slip)ENCASTRE (no slip)
Springback patternAsymmetric (correct)Center-symmetric (wrong)

Common Errors

ErrorCauseFix
Penetration in ODBContact not properly definedVerify surface assignments (S1 on composite, S4+S6 on tool)
No springbackContact not removed in spAdd *Model Change, remove for TOOL elements and surfaces
Convergence issuesFriction too highCheck friction values: 0.45/0.2/0.169 for vis/rub/glassy
Symmetric deformationNo contact (P8_only model)Use P8_mold_V2.inp with proper contact pair
CPRESS = 0 everywhereWrong surface pairVerify master/slave assignment; tool is master

© 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-contact of Cai-aa/CAE-Agent-Hub.

Open the folder on GitHubat commit 194ef49

Compare with similar skills

Curing Contact 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.

Curing Contact compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Curing Contact this skillCai-aa/CAE-Agent-Hub1k—~1.4kAutomated safety check: PassMIT
Bio Hi C Analysis Contact PairsFreedomIntelligence/OpenClaw-Medical-Skills3.1k1 repos~1.6kAutomated safety check: PassNone
Contact Pagethedaviddias/Front-End-Checklist74k—~424Automated safety check: PassMIT
Composition Patternssickn33/agentic-awesome-skills47k1 repos~742Automated safety check: PassMIT
Eas Simulatorsickn33/agentic-awesome-skills47k1 repos~6kAutomated safety check: NotesMIT
Vercel Composition Patternssupabase/supabase111k58 repos~726Automated safety check: PassMIT

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Questions about Curing Contact

What does Curing Contact do?

Define contact pairs and friction for composite curing simulation: mold-composite contact (S1↔S4+S6), temperature-dependent friction (0.45→0.2→0.169), HARD contact property. Curing Contact is an agent skill from Cai-aa/CAE-Agent-Hub.169), HARD contact property.

How do I install Curing Contact in Claude Code?

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

How do I install Curing Contact in Codex?

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

Can I use Curing Contact 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-contact -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-contact, .gemini/skills/curing-contact, .github/skills/curing-contact and .opencode/skills/curing-contact in your project.

What does Curing Contact need to run?

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

Does Curing Contact 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 Contact 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 Contact use?

Curing Contact 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 Contact 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 Contact?

Skills that share tags, products or a category with Curing Contact: Bio Hi C Analysis Contact Pairs (FreedomIntelligence/OpenClaw-Medical-Skills, 3.1k stars), Contact Page (thedaviddias/Front-End-Checklist, 74k stars), Composition Patterns (sickn33/agentic-awesome-skills, 47k stars) and Eas Simulator (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 Contact?

Cai-aa (a GitHub user) maintains it in Cai-aa/CAE-Agent-Hub, which has 1,003 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.