Utils Module

pynumad.utils.affinetrans.rotation(axis, angle)

Designed to replace matlab’s makehgtform

pynumad.utils.interpolation.interpolator_wrap(x, v, xq, method='linear', axis=0, extrapolation=None)

This function is designed to emulate the arg structure and output of matlabs interp1d function.

Parameters:

• x (array)

• v (array)

• xq (array)

• method (str) – Defaults to ‘linear’.

• axis (int) – Defaults to 0.

• extrapolation (bool) – Defaults to None.

Returns:

array

pynumad.utils.misc_utils.full_keys_from_substrings(key_list, subtring_list, ignore_case=True)

Example Usage: subString = [‘B1N3TDx’] res=full_keys_from_substrings(df.keys(),subString)

output: [‘B1N3TDxr_[m]’]

Example Usage: subString = [‘B2’,’TDx’] res=full_keys_from_substrings(df.keys(),subString)

output: [‘B2N1TDxr_[m]’, ‘B2N2TDxr_[m]’, ‘B2N3TDxr_[m]’, ‘B2N4TDxr_[m]’, ‘B2N5TDxr_[m]’, ‘B2N6TDxr_[m]’, ‘B2N7TDxr_[m]’, ‘B2N8TDxr_[m]’, ‘B2N9TDxr_[m]’, ‘B2TipTDxr_[m]’]

pynumad.utils.misc_utils.LARCetaT(alp0)

Compute the coefficient of transverse influence required for Larc failure criteria.

“In the absence of biaxial test data, ?L can be estimated from the longitudinal and transverse shear strengths.” Failure Criteria for FRP Laminates in Plane Stress Carlos G. Dávila, Pedro P. Camanho

Parameters:

alp0 – Material fracture angle, degrees

Returns:

etaT

pynumad.utils.misc_utils.LARCetaL(SL, YC, alp0)

Compute the coefficient of longitudinal influence required for Larc failure criteria.

“In the absence of biaxial test data, ?L can be estimated from the longitudinal and transverse shear strengths.” Failure Criteria for FRP Laminates in Plane Stress Carlos G. Dávila, Pedro P. Camanho

Parameters:

• SL – Lateral shear strength

• YC – Transverse compressive strength

• alp0 – Material fracture angle, degrees

Returns:

etaL