compute_edge_stiffness

compas_tno.utilities.compute_edge_stiffness(form, lengths=None, area=0.125, E=20000000.0)[source]

Compute the stiffness of each edge based on the initial lengths, constant area and Young Modulus E.

Parameters

  • form (::FormDiagram::) – Form diagram to compute the stiffness.

  • lengths (array (m x 1)) – The lengths considered in each edge. The default value is None in which case the initial lengths are calculated based on the middle surface.

  • area (float) – The constant area applied to each edge. The default value is 0.125 which corresponds to a square section of 0.25 x 0.25 m.

  • E (float) – The young modulus of the material. The default value is 20E+6 which corresponds to a 20 GPa commonly used for concrete.

Returns

k (array (m x 1)) – The stiffness of each edge.

Note

The stiffness is based on a the formula below:

$k = frac{EA}{l_mathrm{i}}$