concreteproperties.stress_strain_profile.StressStrainProfile

class StressStrainProfile(strains: List[float], stresses: List[float])

Bases: object

Abstract base class for a material stress-strain profile.

Implements a piecewise linear stress-strain profile. Positive stresses & strains are compression.

Parameters

• strains (List[float]) – List of strains (must be increasing or equal)

• stresses (List[float]) – List of stresses

Methods

get_compressive_strength	Returns the most positive stress.
get_elastic_modulus	Returns the elastic modulus of the stress-strain profile.
get_stress	Returns a stress given a strain.
get_tensile_strength	Returns the most negative stress.
get_ultimate_strain	Returns the largest strain.
get_unique_strains	Returns an ordered list of unique strains.
plot_stress_strain	Plots the stress-strain profile.
print_properties	Prints the stress-strain profile properties to the terminal.

Attributes

strains
stresses

get_stress(strain: float) → float

Returns a stress given a strain.

Parameters

strain (float) – Strain at which to return a stress.

Returns

Stress

Return type

float

get_elastic_modulus() → float

Returns the elastic modulus of the stress-strain profile.

Returns

Elastic modulus

Return type

float

get_compressive_strength() → float

Returns the most positive stress.

Returns

Compressive strength

Return type

float

get_tensile_strength() → float

Returns the most negative stress.

Returns

Tensile strength

Return type

float

get_ultimate_strain() → float

Returns the largest strain.

Returns

Ultimate strain

Return type

float

get_unique_strains() → List[float]

Returns an ordered list of unique strains.

Returns

Ordered list of unique strains

print_properties(fmt: Optional[str] = '8.6e')

Prints the stress-strain profile properties to the terminal.

Parameters

fmt (Optional[str]) – Number format

plot_stress_strain(title: Optional[str] = 'Stress-Strain Profile', **kwargs) → matplotlib.axes.Axes

Plots the stress-strain profile.

Parameters

• title (Optional[str]) – Plot title

• kwargs – Passed to plotting_context()

Returns

Matplotlib axes object

Return type

matplotlib.axes.Axes