Static Databases

Since many partners may contribute to this database, a list of all the available databases is included in:


Data for the structures, material properties and allowables are stored respectively in:

These are static components that one can change in order to add more samples. In the ccs dictionary contains all the samples in a format like:

'zimmermann_1992_z33': {
    'msi': 'zimmermann_1992_z33',
    'r': 250.,
    'h': 510.,
    'numel_r': 240,
    'laminapropKey': 'geier_2002',
    'allowablesKey': 'degenhardt_2010_IM78552_cocomat',
    'stack': [0,0,19,-19,37,-37,45,-45,51,-51],
    'axial_displ': 1.,
    'ploads': [1, 10, 20, 30, 40, 46.5, 70, 90],

where database indicates from which database the sample belongs to. When geometric imperfection measurements are available for a sample, the key msi is defined with the name of the imperfection file. When thickness imperfections are available, the key ti is defined, as in the example below:

'degenhardt_2010_z15': {
    'msi': 'degenhardt_2010_z15',
    'ti': 'degenhardt_2010_z15',
    'r': 250.27,
    'h': 500.,
    'numel_r': 240,
    'laminapropKey': 'degenhardt_2010_IM78552_cocomat',
    'allowablesKey': 'degenhardt_2010_IM78552_cocomat',
    'stack': [24,-24,41,-41],
    'axial_displ': 1.,
    'ploads': [1,2,3,4,5,10],

The material properties are given by names stored in the laminapropKey key. If a different material is used for each ply, then a laminapropKeys key should be defined, containing a list with a laminapropKey for each ply, and the length of this list must be the same as the length of the stacking sequence, given by the stack key. If the plies have the same thickness, only the plyt key has to be defined, otherwise a key plyts has to defined with a list of ply thicknesses, with the same length as stack. For the allowablesKey the same explanation of the laminapropKey applies.

Keeps the material properties, the dictionary laminaprops has in each key a tuple or list with the properties:

(E11, E22, nu12, G12, G13, G23)

for orthotropic materials or:

(E11, E11, nu)

for isotropic materials. Each key in laminaprops corresponds to a laminapropKey in the

Keeps the allowables’ for the materials in the dictionary allowables, where each key corresponds to a allowablesKey in Each value is a tuple or list with:

(S11t, S11c, S22t, S22c, S12, S13)