concreteproperties.utils.get_ultimate_strain#

get_ultimate_strain(point, point_na, d_n, theta, ultimate_strain)[source]#

Determines the strain at point point given neutral axis depth d_n and neutral axis angle theta. Positive strain is compression.

Parameters

  • point (Tuple[float, float]) – Point at which to evaluate the strain

  • point_na (Tuple[float, float]) – Point on the neutral axis

  • d_n (float) – Depth of the neutral axis from the extreme compression fibre

  • theta (float) – Angle (in radians) the neutral axis makes with the horizontal axis (\(-\pi \leq \theta \leq \pi\))

  • ultimate_strain (float) – Concrete strain at failure

Returns

float – Strain