composipy 1.2.2

This package intends to perform composite material calculations

Composipy

What it is

composipy is a python library to calculate composite plates using the classical laminate theory. This library is designed to be simple, userfriendly and helpfull.

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

How to install

Directly From PYPI

pip install composipy

Built from source

python setup.py install

Documentation

• Composipy documentation

• Examples

• Code References

Quick start

Create the Material Properties.

>>> 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.

Define the Laminate.

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

See LaminateProperty for reference.

Calculate Stiffnnes Matrix and Lamination Parameters

>>> 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

Create a Plate Structure.

>>> 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.

Calculate Buckling

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

Plot Buckling shape mode

>>> print(panel.plot_eigenvalue())

Theoretical References

The implementation of composipy is based on the following references

• Mechanics Of Composite Materials by Robert M. Jones
• Castro S.G.P., Donadon M.V. Assembly of semi-analytical models to address linear buckling and vibration of stiffened composite panels with debonding defect. Compos. Struct., 160 (2017), pp. 232-247,