Abaqus/Standard to Abaqus/Explicit co-simulation

Lockstep co-simulation of Abaqus/Standard nonlinear dynamic procedures to Abaqus/Explicit procedures

Elements tested

B31

C3D8I

C3D8

C3D4

S4R

T3D2

Features tested

The fidelity and numerical stability of results obtained using a lockstep Abaqus/Standard to Abaqus/Explicit co-simulation for a model undergoing dynamic large-deformation motion.

Problem description

The problem is a simple beam subjected to an excitation force at the end (see Figure 1).

Figure 1. Continuum element co-simulation model configuration. The configuration of the beam verification problems lies on the centerline of the models shown in this figure. Shell elements, when used, lie on the outside of the models shown.

Model:

The model consists of Abaqus/Standard and Abaqus/Explicit components of a beam of length 20, width 1, and height 1.

Mesh:

A regular brick mesh is used for the continuum and shell element models.

Material:

A linear elastic material definition is used.

Boundary conditions:

The Abaqus/Standard portion of the beam is fully embedded at its end.

Loading:

The Abaqus/Explicit portion of the beam has a load applied transverse to the beam axis.

Co-simulation definition

Each model uses the lockstep method on the co-simulation controls.

Lockstep co-simulation algorithm description

When using the lockstep method, Abaqus/Standard and Abaqus/Explicit will advance their respective solution using the same time incrementation.

Results and discussion

In each case there is generally good agreement between the Abaqus/Standard to Abaqus/Explicit co-simulation results and the Abaqus/Explicit results.

Input files

Beam element tests:

beam_dyntodyn_lockstep_std.inp: B31 Abaqus/Standard analysis.
beam_dyntodyn_lockstep_xpl.inp: B31 Abaqus/Explicit analysis.
beam_dyntodyn_lockstep_config.xml: Co-simulation configuration file.
beam_fullxpl.inp: B31 Abaqus/Explicit reference analysis.

Continuum element tests:

contbeam_dyntodyn_lockstep_std.inp: C3D8I Abaqus/Standard analysis.
contbeam_dyntodyn_lockstep_xpl.inp: C3D8I Abaqus/Explicit analysis.
contbeam_dyntodyn_lockstep_config.xml: Co-simulation configuration file.
contbeam_fullxpl.inp: C3D8I Abaqus/Explicit reference analysis.

Mixed element tests:

contbeam_rot_dyntodyn_lockstep_std.inp: B31, C3D8I, S4R Abaqus/Standard analysis.
contbeam_rot_dyntodyn_lockstep_xpl.inp: B31, C3D8I, S4R Abaqus/Explicit analysis.
contbeam_rot_dyntodyn_lockstep_config.xml: Co-simulation configuration file.
contbeam_rot_fullxpl.inp: B31, C3D8I, S4R Abaqus/Explicit reference analysis.

Truss element tests with axial loading:

truss_dyntodyn_lockstep_std.inp: T3D2 Abaqus/Standard analysis.
truss_dyntodyn_lockstep_xpl.inp: T3D2 Abaqus/Explicit analysis.
truss_dyntodyn_lockstep_config.xml: Co-simulation configuration file.
truss_fullxpl.inp: T3D2 Abaqus/Explicit reference analysis.

Tests with dissimilar meshes at the co-simulation interface regions:

contbeam_dmesh_dyntodyn_lock_std.inp: C3D4 Abaqus/Standard analysis.
contbeam_dmesh_dyntodyn_lock_xpl.inp: C3D8 Abaqus/Explicit analysis.
contbeam_dmesh_dyntodyn_lock_config.xml: Co-simulation configuration file.
contbeam_dmesh2_dyntodyn_lock_std.inp: C3D8 Abaqus/Standard analysis.
contbeam_dmesh2_dyntodyn_lock_xpl.inp: C3D4 Abaqus/Explicit analysis.
contbeam_dmesh2_dyntodyn_lock_config.xml: Co-simulation configuration file.

Subcycling co-simulation of Abaqus/Standard nonlinear dynamic procedures to Abaqus/Explicit procedures

Elements tested

B31

C3D8I

C3D8

C3D4

S4R

T3D2

Features tested

The fidelity and numerical stability of results obtained using a subcycling Abaqus/Standard to Abaqus/Explicit co-simulation for a model undergoing dynamic large-deformation motion.

Problem description

The problem is a simple beam subjected to severe excitation force (see Figure 1).

Model:

The model consists of Abaqus/Standard and Abaqus/Explicit components of a beam of length 20, width 1, and height 1.

Mesh:

A regular brick mesh is used for the continuum and shell element models.

Material:

A linear elastic material definition is used.

Boundary conditions:

The Abaqus/Standard portion of the beam is fully embedded at its end.

Loading:

The Abaqus/Explicit portion of the beam has a load applied transverse to the beam axis.

Co-simulation definition

Each model uses the subcycle method on the co-simulation controls.

Subcycling co-simulation algorithm description

When using the subcycle method, Abaqus/Standard and Abaqus/Explicit will advance their respective solutions using time incrementation appropriate to their solution.

Results and discussion

In each case there is generally good agreement between the Abaqus/Standard to Abaqus/Explicit co-simulation results and the Abaqus/Explicit results.

Input files

Beam element tests:

beam_dyntodyn_subcycle_std.inp: B31 Abaqus/Standard analysis.
beam_dyntodyn_subcycle_xpl.inp: B31 Abaqus/Explicit analysis.
beam_dyntodyn_subcycle_config.xml: Co-simulation configuration file.
beam_fullxpl.inp: B31 Abaqus/Explicit reference analysis.

Continuum element tests:

contbeam_dyntodyn_subcycle_std.inp: C3D8I Abaqus/Standard analysis.
contbeam_dyntodyn_subcycle_xpl.inp: C3D8I Abaqus/Explicit analysis.
contbeam_dyntodyn_subcycle_config.xml: Co-simulation configuration file.
contbeam_fullxpl.inp: C3D8I Abaqus/Explicit reference analysis.

Mixed element tests:

contbeam_rot_dyntodyn_subcycle_std.inp: B31, C3D8I, S4R Abaqus/Standard analysis.
contbeam_rot_dyntodyn_subcycle_xpl.inp: B31, C3D8I, S4R Abaqus/Explicit analysis.
contbeam_rot_dyntodyn_subcycle_config.xml: Co-simulation configuration file.
contbeam_rot_fullxpl.inp: B31, C3D8I, S4R Abaqus/Explicit reference analysis.

Truss element tests with axial loading:

truss_dyntodyn_subcycle_std.inp: T3D2 Abaqus/Standard analysis.
truss_dyntodyn_subcycle_xpl.inp: T3D2 Abaqus/Explicit analysis.
truss_dyntodyn_subcycle_config.xml: Co-simulation configuration file.
truss_fullxpl.inp: T3D2 Abaqus/Explicit reference analysis.

Tests with dissimilar meshes at the co-simulation interface regions:

contbeam_dmesh_dyntodyn_sub_std.inp: C3D4 Abaqus/Standard analysis.
contbeam_dmesh_dyntodyn_sub_xpl.inp: C3D8 Abaqus/Explicit analysis.
contbeam_dmesh_dyntodyn_sub_config.xml: Co-simulation configuration file.
contbeam_dmesh2_dyntodyn_sub_std.inp: C3D8 Abaqus/Standard analysis.
contbeam_dmesh2_dyntodyn_sub_xpl.inp: C3D4 Abaqus/Explicit analysis.
contbeam_dmesh2_dyntodyn_sub_config.xml: Co-simulation configuration file.

Tests of less frequent interface matrix factorization:The following input files test the factorization of the interface matrix once per Abaqus/Standard increment on the co-simulation controls.

contbeam_dyntodyn_fact_std.inp: C3D8I Abaqus/Standard analysis.
contbeam_dyntodyn_fact_xpl.inp: C3D8I Abaqus/Explicit analysis.
contbeam_dyntodyn_fact_config.xml: Co-simulation configuration file.
contbeam_dmesh_dyntodyn_fact_std.inp: C3D4 Abaqus/Standard analysis.
contbeam_dmesh_dyntodyn_fact_xpl.inp: C3D8 Abaqus/Explicit analysis.
contbeam_dmesh_dyntodyn_fact_config.xml: Co-simulation configuration file.

Subcycling co-simulation of Abaqus/Standard nonlinear static procedures to Abaqus/Explicit procedures

Elements tested

B31

C3D8I

C3D8

C3D4

S4R

T3D2

Features tested

The fidelity and numerical stability of results obtained using subcycling Abaqus/Standard quasi-static procedures to Abaqus/Explicit co-simulation for a model undergoing quasi-static deformation.

Problem description

The problem is a simple beam subjected to quasi-static loading (see Figure 1).

Model:

The model consists of Abaqus/Standard and Abaqus/Explicit components of a beam of length 20, width 1, and height 1.

Mesh:

A regular brick mesh is used for the continuum and shell element models.

Material:

A linear elastic material definition is used.

Boundary conditions:

The Abaqus/Standard portion of the beam is fully embedded at the free end.

Loading:

The Abaqus/Explicit portion of the beam has a load applied transverse to the beam axis.

Co-simulation definition

Each model uses the subcycle method on the co-simulation controls.

Subcycling co-simulation algorithm description

When using the subcycle method, Abaqus/Standard and Abaqus/Explicit will advance their respective solutions using time incrementation appropriate to their solution.

Results and discussion

In each case there is generally good agreement between the Abaqus/Standard to Abaqus/Explicit co-simulation results and the Abaqus/Explicit results.

Input files

Continuum element tests:

contbeam_statodyn_subcycle_std.inp: C3D8I Abaqus/Standard analysis.
contbeam_statodyn_subcycle_xpl.inp: C3D8I Abaqus/Explicit analysis.
contbeam_statodyn_subcycle_config.xml: Co-simulation configuration file.
contbeam_quasistatic_fullxpl.inp: C3D8I Abaqus/Explicit reference analysis.

Mixed element tests:

contbeam_rot_statodyn_subcycle_std.inp: B31, C3D8I, S4R Abaqus/Standard analysis.
contbeam_rot_statodyn_subcycle_xpl.inp: B31, C3D8I, S4R Abaqus/Explicit analysis.
contbeam_rot_statodyn_fact_config.xml: Co-simulation configuration file.
contbeam_rot_quasistatic_fullxpl.inp: B31, C3D8I, S4R Abaqus/Explicit reference analysis.

Truss element tests with axial loading:

truss_statodyn_subcycle_std.inp: T3D2 Abaqus/Standard analysis.
truss_statodyn_subcycle_xpl.inp: T3D2 Abaqus/Explicit analysis.
truss_statodyn_subcycle_config.xml: Co-simulation configuration file.
truss_fullxpl.inp: T3D2 Abaqus/Explicit reference analysis.

Tests with dissimilar meshes at the co-simulation interface regions:

contbeam_dmesh_statodyn_sub_std.inp: C3D4 Abaqus/Standard analysis.
contbeam_dmesh_statodyn_sub_xpl.inp: C3D8 Abaqus/Explicit analysis.
contbeam_dmesh_statodyn_sub_config.xml: Co-simulation configuration file.
contbeam_dmesh2_statodyn_sub_std.inp: C3D8 Abaqus/Standard analysis.
contbeam_dmesh2_statodyn_sub_xpl.inp: C3D4 Abaqus/Explicit analysis.
contbeam_dmesh2_statodyn_sub_config.xml: Co-simulation configuration file.

Tests of less frequent interface matrix factorization:The following input files test the factorization of the interface matrix once per Abaqus/Standard increment on the co-simulation controls.

contbeam_rot_statodyn_fact_std.inp: B31, C3D8I, S4R Abaqus/Standard analysis.
contbeam_rot_statodyn_fact_xpl.inp: B31, C3D8I, S4R Abaqus/Explicit analysis.
contbeam_rot_statodyn_fact_config.xml: Co-simulation configuration file.
contbeam_dmesh_statodyn_fact_std.inp: C3D4 Abaqus/Standard analysis.
contbeam_dmesh_statodyn_fact_xpl.inp: C3D8 Abaqus/Explicit analysis.
contbeam_dmesh_statodyn_fact_config.xml: Co-simulation configuration file.

Model attribute tests for Abaqus/Standard to Abaqus/Explicit co-simulation

Elements tested

B21

C3D8I

C3D4

SFM3D4R

Features tested

The proper operation of Abaqus/Standard to Abaqus/Explicit co-simulation is confirmed for cases involving specific modeling attributes.

Problem description

Each problem considered is a variation of those described in Lockstep co-simulation of Abaqus/Standard nonlinear dynamic procedures to Abaqus/Explicit procedures. Particular variations are listed in the input file description.

Results and discussion

In each case the results confirm that Abaqus/Standard to Abaqus/Explicit co-simulation operates correctly with particular modeling attributes employed.

Input files

Two-dimensional beam element tests:

beam_2d_dyntodyn_subcycle_std.inp: B21 Abaqus/Standard analysis.
beam_2d_dyntodyn_subcycle_xpl.inp: B21 Abaqus/Explicit analysis.
beam_2d_dyntodyn_subcycle_config.xml: Co-simulation configuration file.

Abaqus/Standard substructure retained nodes at the interface:

contbeam_substruc_subcycle_std.inp: C3D8I Abaqus/Standard analysis.
contbeam_substructure_gen.inp: C3D8I Abaqus/Standard substructure generation.
contbeam_substruc_subcycle_std.inp: C3D8I Abaqus/Explicit analysis.
contbeam_substruc_subcycle_config.xml: Co-simulation configuration file.

Test with mass scaling in Abaqus/Explicit:

contbeam_dyntodyn_mass_scale_std.inp: C3D8I Abaqus/Standard analysis.
contbeam_dyntodyn_mass_scale_xpl.inp: C3D8I Abaqus/Explicit analysis with mass scaling.
contbeam_dyntodyn_mass_scale_config.xml: Co-simulation configuration file.

Tests with tie constraints at the co-simulation interface:

tie_dyntodyn_lockstep_std.inp: C3D4, SFM3D4R Abaqus/Standard analysis.
tie_dyntodyn_lockstep_xpl.inp: C3D4, SFM3D4R Abaqus/Explicit analysis.
tie_dyntodyn_lockstep_config.xml: Co-simulation configuration file.
tie_dyntodyn_subcycle_std.inp: C3D4, SFM3D4R Abaqus/Standard analysis.
tie_dyntodyn_subcycle_xpl.inp: C3D4, SFM3D4R Abaqus/Explicit analysis.
tie_dyntodyn_subcycle_config.xml: Co-simulation configuration file.