ImplicitAnalysis

class ansys.dyna.core.pre.dynabase.ImplicitAnalysis(analysis_type=AnalysisType.IMPLICIT, initial_timestep_size=0)

Activates implicit analysis and defines associated control parameters.

Overview

Methods

set_initial_timestep_size	Define the initial time step size.
set_timestep	Define parameters for automatic time step control during implicit analysis.
set_dynamic	Activate implicit dynamic analysis and define time integration constants.
set_eigenvalue	Activate implicit eigenvalue analysis and define associated input parameters.
set_solution	Specify whether a linear or nonlinear solution is desired.
set_consistent_mass_matrix	Use the consistent mass matrix in implicit dynamics and eigenvalue solutions.
create	Create an implicit analysis.

Attributes

defined
defined_auto
defined_dynamic
defined_eigenvalue
defined_solution
defined_mass_matrix
imflag
dt0
stub

Import detail

from ansys.dyna.core.pre.dynabase import ImplicitAnalysis

Attribute detail

ImplicitAnalysis.defined = False

ImplicitAnalysis.defined_auto = False

ImplicitAnalysis.defined_dynamic = False

ImplicitAnalysis.defined_eigenvalue = False

ImplicitAnalysis.defined_solution = False

ImplicitAnalysis.defined_mass_matrix = False

ImplicitAnalysis.imflag = 1

ImplicitAnalysis.dt0 = 0

ImplicitAnalysis.stub

Method detail

ImplicitAnalysis.set_initial_timestep_size(size=0)

Define the initial time step size.

ImplicitAnalysis.set_timestep(control_flag=TimestepCtrol.CONSTANT_TIMESTEP_SIZE, Optimum_equilibrium_iteration_count=11)

Define parameters for automatic time step control during implicit analysis.

Parameters:

control_flagint

Automatic time step control flag.

Optimum_equilibrium_iteration_countint, optional

Optimum equilibrium iteration count per time step. The default is 11.

Returns:

bool

True when successful, False when failed.

ImplicitAnalysis.set_dynamic(integration_method=Integration.NEWMARK_TIME_INTEGRATION, gamma=0.5, beta=0.25)

Activate implicit dynamic analysis and define time integration constants.

Parameters:

integration_methodenum

Implicit analysis type.

gammafloat, optional

Newmark time integration constant. The default is 0.5.

betafloat, optional

Newmark time integration constant. The default is 0.25.

Returns:

bool

True when successful, False when failed.

ImplicitAnalysis.set_eigenvalue(number_eigenvalues=0, shift_scale=0)

Activate implicit eigenvalue analysis and define associated input parameters.

Parameters:

number_eigenvaluesint, optional

Number of eigenvalues to extract. The default is 0.

shift_scalefloat, optional

Shift scale. The default is 0.

Returns:

bool

True when successful, False when failed.

ImplicitAnalysis.set_solution(solution_method=12, iteration_limit=11, stiffness_reformation_limit=55, absolute_convergence_tolerance=1e-10)

Specify whether a linear or nonlinear solution is desired.

Parameters:

solution_methodint, optional

Solution method for implicit analysis. The default is 12.

iteration_limitint, optional

Iteration limit between automatic stiffness reformations. The default is 11.

stiffness_reformation_limitint, optional

Stiffness reformation limit per time step. The default is 55.

absolute_convergence_tolerancefloat, optional

Absolute convergence tolerance. The default is 1e-10.

Returns:

bool

True when successful, False when failed.

ImplicitAnalysis.set_consistent_mass_matrix()

Use the consistent mass matrix in implicit dynamics and eigenvalue solutions.

ImplicitAnalysis.create()

Create an implicit analysis.