Analysis

stiffness_calculation_method

  • Optional: Yes

  • Type: String

  • Description: The stiffness calculation method. Possible options include conventional and effective. However, we no longer use conventional in the recent projects since its performance is concerning, and this parameter is going to be deprecated (the value of it will be set as effective permanently) for the same reason. This is an optional parameter and the default value is effective.

use_progressive_meshing

  • Optional: Yes

  • Type: Boolean

  • Description: Whether to utilize progressive meshing technique. Since it will be more efficient with the utilization of progressive meshing, this parameter will be set as 1 (enabled) permanently and be deprecated in the future. This is an optional parameter and the default value is 1.

Nonlinear Analysis

(This section is under construction.)

The current version of Hercules can only perform nonlinear analysis with Istanbul Velocity Model enabled.

include_nonlinear_analysis

  • Optional: Yes

  • Type: Yes or No

  • Description: Whether to consider nonlinearity in the simulation. This is an optional parameter and the default value is no.

geostatic_loading_time_sec

  • Optional: Conditional

  • Type:

  • Description: This parameter is required when include_nonlinear_analysis is set to yes.

geostatic_cushion_time_sec

  • Optional: Conditional

  • Type:

  • Description: This parameter is required when include_nonlinear_analysis is set to yes.

approximate_geostatic_state

  • Optional: Conditional

  • Type: Yes or No

  • Description: Whether an initial stress state with \(K_o = 1 - \sin\phi\) as coefficient of lateral earth pressure at rest should be assumed. This parameter is required when include_nonlinear_analysis is set to yes.

material_plasticity_type

  • Optional: Conditional

  • Type: String

  • Description: Possible options include rate_dependent and rate_independent. This parameter is required when include_nonlinear_analysis is set to yes.

material_model

  • Optional: Conditional

  • Type: String

  • Description: Possible options include linear, vonMises_ep, vonMises_fa, vonMises_faM, vonMises_baE, vonMises_baH, vonMises_GQH, vonMises_MKZ, vonMises_RO, MohrCoulomb, and DruckerPrager. This parameter is required when include_nonlinear_analysis is set to yes.

error_tolerance

  • Optional: Conditional

  • Type: Float

  • Description: This parameter is required when include_nonlinear_analysis is set to yes.

backbone_errTol

  • Optional: Conditional

  • Type: Float

  • Description: This parameter is required when include_nonlinear_analysis is set to yes.

stiff_damp

  • Optional: Conditional

  • Type: Float

  • Description: This parameter is required when include_nonlinear_analysis is set to yes.

freq_stiff_damp

  • Optional: Conditional

  • Type:

  • Description: This parameter is required when include_nonlinear_analysis is set to yes.

tension_cutoff

  • Optional: Conditional

  • Type: Yes or No

  • Description: Whether to remove tensile stresses or not. This parameter only affects Mohr-Coulomb and Drucker-Prager material models. This parameter is required when include_nonlinear_analysis is set to yes.

material_properties_count

  • Optional: Conditional

  • Type: Integer

  • Description: This parameter is required when include_nonlinear_analysis is set to yes.

no_substeps

  • Optional: Conditional

  • Type: Integer

  • Description: This parameter is required when include_nonlinear_analysis is set to yes.

material_properties_list

  • Optional: Conditional

  • Type: Multiple numbers

  • Format:

  • Description: This parameter is required when include_nonlinear_analysis is set to yes.