Laminate Theory Python Package

A Python package for classical laminate theory (CLT) calculations of composite laminates.
It computes A, B, D matrices, effective in-plane stiffness, and detects symmetric/unsymmetric laminates.

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Features

• Read laminate configuration from a JSON file
• Define orthotropic material properties
• Define individual plies with thickness and orientation
• Compute ply stiffness matrices (Q, Q̄) automatically
• Compute laminate ABD matrices
• Detect symmetric vs. unsymmetric laminates
• Compute homogenized in-plane laminate properties (E1, E2, G12, ν12)
• Fully object-oriented and dataclass-based
• Logs inputs, matrices, symmetry, and homogenzied properties

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Project Structure

project_root/
├── src/
│   └── laminate/
│       ├── __init__.py
│       ├── utilities.py
│       ├── material.py
│       ├── ply.py
│       └── laminate.py
├── examples/
│   ├── example.py
│   └── input.json
├── pyproject.toml
└── README.md

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Development

• All source code is in src/laminate/
• Examples and test inputs are in examples/
• Use editable install to develop and test:

pip install -e .

• Make sure your IDE is using the same virtual environment for proper module resolution.

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References

• NASA Classical Laminate Theory Reference

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License