m_n_kappa.MKappaByStrainPosition#

class m_n_kappa.MKappaByStrainPosition(cross_section, strain_position, maximum_curvature=None, minimum_curvature=None, positive_curvature=None, applied_axial_force=0.0, maximum_iterations=10, axial_force_tolerance=5.0, solver=<class 'm_n_kappa.solver.Newton'>, is_called_by_user=True)#

Bases: MKappa

computation of one Moment-Curvature-Point by fixed stress-strain_value-point and varying the neutral axis

New in version 0.1.0.

Parameters:

cross_section (Crossection) – cross-section to compute
strain_position (StrainPosition) – position_value of the given strain_value (Default: None)
maximum_curvature (float) – maximum positive or negative allowed curvature (Default: None)
minimum_curvature (float) – minimum positive or negative allowed curvature (needs same sign as edge_strains, Default: None)
applied_axial_force (float) – applied axial force (Default: 0.0)
maximum_iterations (int) – maximum allowed iterations (Default: 10) In case the given number of iterations before axial force within desired tolerance, the computation is classified as not successful and will be stopped
axial_force_tolerance (float) – if axial force within this tolerance the computation is terminated and classified as successful (Default: 5.0)
solver (Solver) – used solver (Default: solver.Newton)
positive_curvature (bool) –
is_called_by_user (bool) –

Methods

`axial_force_equilibrium`()	latest computed axial-force-value
`compute`()	compute the cross-section with given initial values (curvature and neutral axis) and save it
`initialize_boundary_curvatures`()

Attributes

`applied_axial_force`	axial-force the strain is to be computed
`axial_force`	latest computed axial-force-value
`axial_force_tolerance`	tolerance the `axial_force_equilibrium()` must be within for a successful computation
`computations`	conducted computations
`computed_cross_section`	computed cross_section of the current iteration
`cross_section`	cross-section to be computed
`curvature`
`iteration`	number of iteration
`maximum_curvature`	maximum positive or negative allowed curvature
`maximum_iterations`	maximum iterations
`minimum_curvature`	minimum positive or negative allowed curvature
`moment`	computed moment of the cross_section
`neutral_axis`	point where strain_value is zero
`not_successful_reason`	In case computation was not successful gives a reason
`positive_curvature`	`True` indicates a positive curvature
`solver`	used solver to computed equilibrium
`strain_position`	position_value of the given strain_value
`successful`	indicates if strain has been computed successfully
`variable`	name variable that is changed to reach equilibrium of axial force

axial_force_equilibrium()#

latest computed axial-force-value

Return type:: float

compute()#

compute the cross-section with given initial values (curvature and neutral axis) and save it

Return type:: None

property applied_axial_force: float#: axial-force the strain is to be computed

property axial_force: float#: latest computed axial-force-value

property axial_force_tolerance: float#: tolerance the axial_force_equilibrium() must be within for a successful computation

property computations: list[m_n_kappa.points.Computation]#: conducted computations

property computed_cross_section: m_n_kappa.crosssection.ComputationCrosssectionStrain | m_n_kappa.crosssection.ComputationCrosssectionCurvature#: computed cross_section of the current iteration

property cross_section: Crosssection#: cross-section to be computed

property curvature: float#

property iteration: int#: number of iteration

property maximum_curvature: float#: maximum positive or negative allowed curvature

property maximum_iterations: int#: maximum iterations

property minimum_curvature: float#: minimum positive or negative allowed curvature

property moment: float#: computed moment of the cross_section

property neutral_axis: float#: point where strain_value is zero

property not_successful_reason: NotSuccessfulReason#: In case computation was not successful gives a reason

property positive_curvature: bool#: True indicates a positive curvature

property solver: Solver#: used solver to computed equilibrium

property strain_position: StrainPosition#: position_value of the given strain_value

property successful: bool#: indicates if strain has been computed successfully

property variable#: name variable that is changed to reach equilibrium of axial force

New in version 0.2.0.