fit_MKZ

PySeismoSoil.helper_mkz_model.fit_MKZ(curve_data: ndarray, show_fig: bool = False, verbose: bool = False) → tuple[numpy.ndarray, numpy.ndarray]

Fit MKZ model to G/Gmax curves.

Parameters:

• curve_data (np.ndarray) –

  A 2D numpy array that represents G/Gmax and damping curves of each layer, in the following format:

  strain [%]	G/Gmax	strain [%]	damping [%]	strain [%]	G/Gmax	…
  …	…	…	…	…	…	…

  The damping information is neglected in this function, so users can supply some dummy values.

• show_fig (bool) – Whether to show curve-fitting results.

• verbose (bool) – Whether to show messages about the calculation progress on the console.

Returns:

• param (np.ndarray) – The fitted MKZ parameters. Shape: (n_mat, 4), where n_mat is the number of materials implied in curve_data.

• fitted_curves (np.ndarray) – The fitted curves. Shape: (nr, 4 * n_mat), where nr is the length of the strain array. Currently hard-coded as 109.