m_n_kappa.material.ConcreteCompression#

class m_n_kappa.material.ConcreteCompression(f_cm, yield_strain, E_cm)#

Bases: ABC

Meta-class for concrete under compression

New in version 0.1.0.

Several models are given to describe concrete under compression. This class works as basis for implementing these models and give them a similar interface.

Parameters:

f_cm (float) – mean concrete cylinder compressive strength \(f_\mathrm{cm}\)
yield_strain (float) – strain up to which the concrete is assumed to be linear-elastic \(\varepsilon_\mathrm{y}\)
E_cm (float) – mean elasticity modulus of concrete \(E_\mathrm{cm}\)

See also

ConcreteCompressionNonlinear: Non-linear behaviour of concrete under compression
ConcreteCompressionParabolaRectangle: Parabola-rectangle behaviour of concrete under compression
ConcreteCompressionBiLinear: Bi-linear behaviour of concrete under compression

Methods

`stress`(strain)	method to compute the stress for the given `strain`
`stress_strain`()	stress-strain points of the material

Attributes

`E_cm`	mean elasticity modulus of concrete \(E_\mathrm{cm}\)
`c`	strain-value at peak stress \(\varepsilon_\mathrm{c}\)
`cu`	strain-value at failure \(\varepsilon_\mathrm{cu}\)
`f_ck`	characteristic concrete cylinder compressive strength \(f_\mathrm{ck}\)
`f_cm`	mean concrete cylinder compressive strength \(f_\mathrm{cm}\)
`strains`	strains a corresponding stress-point is to be computed
`yield_strain`	strain up to which the concrete is assumed to be linear-elastic \(\varepsilon_\mathrm{y}\)

abstract stress(strain)#

method to compute the stress for the given strain

Parameters:: strain (float) – strain to compute a corresponding stress-point
Returns:: stress-point to the given strain
Return type:: float

stress_strain()#

stress-strain points of the material

Return type:: list

property E_cm: float#: mean elasticity modulus of concrete \(E_\mathrm{cm}\)

abstract property c: float#: strain-value at peak stress \(\varepsilon_\mathrm{c}\)

abstract property cu: float#: strain-value at failure \(\varepsilon_\mathrm{cu}\)

property f_ck: float#: characteristic concrete cylinder compressive strength \(f_\mathrm{ck}\)

property f_cm: float#: mean concrete cylinder compressive strength \(f_\mathrm{cm}\)

abstract property strains: list#: strains a corresponding stress-point is to be computed

property yield_strain: float#: strain up to which the concrete is assumed to be linear-elastic \(\varepsilon_\mathrm{y}\)