Composipy is a Python-based library designed to address the challenges of composite plate analysis and optimization in the aerospace industry, where weight reduction is crucial for efficient and profitable aircraft design. The library offers tools for plate buckling analysis and lamination parameter optimization, empowering engineers to streamline the design process and enhance structural performance. Utilizing object-oriented programming and native Python structures, Composipy ensures a seamless workflow and easy integration into existing engineering practices. Through continuous integration and delivery practices, Composipy maintains reliability and efficiency.

Composipy is able to perform buckling calculation considering different boundary conditions and in-plane load applications. See Examples.

pip install composipy

python setup.py install

• Examples

• Code References

• Optitmization functions

from composipy import OrthotropicMaterial
 
E1 = 60800
E2 = 58250
v12 = 0.07
G12 = 4550
t = 0.21

mat_1 = OrthotropicMaterial(E1, E2, v12, G12, t)

See OrthotropicMaterial for reference.

from composipy import LaminateProperty
stacking = [-45, 45, 90, 0, 0, 0, 0, 90, 45, -45]
laminate1 = LaminateProperty(stacking, mat_1)

See LaminateProperty for reference.

print(laminate1.ABD) # prints the ABD matrix as a np.ndarray
print(laminate1.xiA) # prints lamination parameters of extension as a np.ndarray
print(laminate1.xiD) # prints lamination parameters of bending as a np.ndarray

from composipy import PlateStructure
 
constraints = {    
     'x0' : ['TX', 'TY', 'TZ', 'RX', 'RY', 'RZ'],
     'xa' : ['TX', 'TY', 'TZ', 'RX', 'RY', 'RZ'],
     'y0' : ['TX', 'TY', 'TZ', 'RX', 'RY', 'RZ'],
     'yb' : ['TX', 'TY', 'TZ', 'RX', 'RY', 'RZ']
}
panel = PlateStructure(laminate1, 360, 360, m=10, n=10, Nxx=-1, constraints=constraints)

See PlateStructure for reference.

print(panel.buckling_analysis()) # solve the eigenvalue problem.

print(panel.plot_eigenvalue())

The implementation of composipy is based on the following reference:

• SILVA, Rafael Pereira da. Composite Plate optimization combining semi-analytical model, Lamination Parameters and a Gradient-Based Optimizer. 2023. 82f. Dissertation of Master of Science – Instituto Tecnológico de Aeronáutica, São José dos Campos.
• rafaelpsilva07. (2024). rafaelpsilva07/rafaelmscdissertation: v1.0.0 (1.0.0). Zenodo. https://doi.org/10.5281/zenodo.10546621
• Application repository: https://github.com/rafaelpsilva07/rafaelmscdissertation