Products: ABAQUS/Standard ABAQUS/Explicit
This section gives a brief description of tests that are conducted to verify the use of different options in ABAQUS/Standard and ABAQUS/Explicit.
This test verifies that elements that are rendered inactive in ABAQUS/Standard because of the use of the *MODEL CHANGE option are not imported into ABAQUS/Explicit. The finite element model consists of three CPE4R elements. The analysis in ABAQUS/Standard consists of four steps. In the first step the model is subjected to a tensile load, in Step 2 two of the elements are rendered inactive, in Step 3 one of these elements is reactivated, and finally in Step 4 the two active elements are subjected to an increased tensile load. The results from the end of Step 3 of the ABAQUS/Standard analysis are imported into ABAQUS/Explicit. Only the two active elements are imported; these two elements are then subjected to the same tensile loads as in Step 4 of the ABAQUS/Standard analysis. This test is conducted with CPE4R elements. The material definition and loading are not important.
The results at the end of the ABAQUS/Explicit import analysis are identical to the results at the end of the ABAQUS/Standard analysis. The results demonstrate that the effects of using the *MODEL CHANGE option are transferred correctly between ABAQUS/Explicit and ABAQUS/Standard. In addition, the results demonstrate that elements that are inactive in an ABAQUS/Standard analysis will not be imported into ABAQUS/Explicit.
The following set of tests involves importing the results from ABAQUS/Explicit and then conducting a frequency analysis in ABAQUS/Standard. The model consists of a single element subjected to tensile load. Linear isotropic elasticity is used to describe the material behavior.
Verification tests of the enhanced hourglass control method are also included.
The results demonstrate that frequency definitions are transferred correctly between ABAQUS/Explicit and ABAQUS/Standard.
ABAQUS/Explicit analysis.
ABAQUS/Standard analysis.
ABAQUS/Explicit analysis.
ABAQUS/Standard analysis.
ABAQUS/Explicit analysis.
ABAQUS/Explicit analysis with enhanced hourglass control.
ABAQUS/Standard analysis.
ABAQUS/Standard analysis with enhanced hourglass control.
ABAQUS/Explicit analysis.
ABAQUS/Standard analysis.
These tests involve using the NLGEOM parameter on the *STEP option. If NLGEOM=YES in the original analysis, NLGEOM is set to YES by default in the subsequent import analysis and cannot be changed. If NLGEOM=NO in the original analysis, NLGEOM is set to NO in the first step of the import analysis with UPDATE=NO on the *IMPORT option. It can be changed if required.
The test consists of a single element subjected to monotonically increasing tensile loads. The parameter NLGEOM is set to NO on the *STEP option in the ABAQUS/Explicit analysis. The results are then imported into ABAQUS/Standard. Two tests are carried out in ABAQUS/Standard, one with with NLGEOM=YES on the *STEP option and another with NLGEOM=NO on the *STEP option. Linear isotropic elastic properties for the material are assumed.
A similar test is conducted when the transfer is from ABAQUS/Standard into ABAQUS/Explicit.
Verification tests of the enhanced hourglass control method are also included.
The results demonstrate that the value of the NLGEOM parameter is transferred correctly between ABAQUS/Explicit and ABAQUS/Standard.
ABAQUS/Standard analysis.
ABAQUS/Standard analysis with enhanced hourglass control.
ABAQUS/Explicit analysis with NLGEOM=NO.
ABAQUS/Explicit analysis with NLGEOM=NO and enhanced hourglass control.
ABAQUS/Explicit analysis with NLGEOM=YES.
ABAQUS/Explicit analysis with NLGEOM=YES and enhanced hourglass control.
ABAQUS/Explicit analysis.
ABAQUS/Standard analysis with NLGEOM=NO.
ABAQUS/Standard analysis with NLGEOM=YES.
The following tests verify the application of initial stresses and equivalent plastic strains in an import analysis. Initial stresses and equivalent plastic strains can be specified in an import analysis only when STATE=NO on the *IMPORT option.
A sequential analysis consisting of transfer from ABAQUS/Explicit to ABAQUS/Standard and then back to ABAQUS/Explicit is conducted. The model consists of a single CPE4R element subjected to tensile loads. The STATE parameter is set equal to NO on the *IMPORT option in the import analysis, and the material behavior is described by linear isotropic elasticity with Mises plasticity. In the ABAQUS/Standard analysis both initial equivalent plastic strains and initial stresses are prescribed, while in the second ABAQUS/Explicit analysis only the stresses are prescribed.
The following material properties are used (the units are not important):
Elasticity
Plasticity (Hardening)
The results demonstrate that initial stresses and equivalent plastic strains are transferred correctly between ABAQUS/Explicit and ABAQUS/Standard.
First ABAQUS/Explicit analysis.
ABAQUS/Standard analysis.
Second ABAQUS/Explicit analysis.
The application of initial velocities in terms of an angular velocity in an import analysis is tested. The transfer of results is from ABAQUS/Standard into ABAQUS/Explicit. The analysis in ABAQUS/Standard involves subjecting a single S4R element to a centrifugal force. A static procedure is used in ABAQUS/Standard for this purpose. The velocities are zero since the ABAQUS/Standard analysis is a static analysis. Initial angular velocities are prescribed on the nodes of the imported element in ABAQUS/Explicit to allow the spinning of the element about a particular axis. Linear isotropic elasticity is used to describe the material behavior.
These tests verify the use of multi-point constraints in a sequential import analysis. The models are subjected to monotonically increasing tensile loads. The sequence of tests involves transferring results from ABAQUS/Explicit to ABAQUS/Standard and then back into ABAQUS/Explicit. All tests use CPS4R elements except for the test that uses SLIDER and SS LINEAR MPCs. This test uses C3D8R and S4R elements. The material model is not important.
The results demonstrate that multi-point constraints are transferred correctly between ABAQUS/Explicit and ABAQUS/Standard.
First ABAQUS/Explicit analysis.
ABAQUS/Standard analysis.
Second ABAQUS/Explicit analysis.
First ABAQUS/Explicit analysis.
ABAQUS/Standard analysis.
Second ABAQUS/Explicit analysis.
First ABAQUS/Explicit analysis.
ABAQUS/Standard analysis.
Second ABAQUS/Explicit analysis.
First ABAQUS/Explicit analysis.
ABAQUS/Standard analysis.
Second ABAQUS/Explicit analysis.
First ABAQUS/Explicit analysis.
ABAQUS/Standard analysis.
Second ABAQUS/Explicit analysis.
First ABAQUS/Explicit analysis.
ABAQUS/Standard analysis.
Second ABAQUS/Explicit analysiss.
These tests verify that results are imported correctly when the *PRE-TENSION SECTION option is used in an ABAQUS/Standard analysis. Pre-tension loading is applied to the model in ABAQUS/Standard; the model is then subjected to tensile loading. The results are imported into ABAQUS/Explicit, where additional tension is applied. This result is imported back into ABAQUS/Standard, where additional tension is imposed.
The results demonstrate that the *PRE-TENSION SECTION option is transferred correctly between ABAQUS/Explicit and ABAQUS/Standard.
First ABAQUS/Standard analysis.
ABAQUS/Explicit analysis.
Second ABAQUS/Standard analysis.
These tests verify the application of *TRANSFORM in a sequential import analysis. The *TRANSFORM option is redefined in each input file. Two different transformation types are considered: rectangular and cylindrical.
The model using the rectangular transformation is subjected to monotonically increasing tensile loads; the model using the cylindrical transformation is subjected to monotonically increasing torsional loads. The sequence of tests involves transferring results from ABAQUS/Standard to ABAQUS/Explicit and then back to ABAQUS/Standard. The material model is not important.
The results demonstrate that rectangular and cylindrical transformations are transferred correctly between ABAQUS/Explicit and ABAQUS/Standard.
First ABAQUS/Standard analysis.
ABAQUS/Explicit analysis.
Second ABAQUS/Standard analysis.
First ABAQUS/Standard analysis.
ABAQUS/Explicit analysis.
Second ABAQUS/Standard analysis.
These tests verify the transfer of results from ABAQUS/Standard to ABAQUS/Explicit when steady-state transport is used in ABAQUS/Standard. Three input files are used in each verification test. In the first input file an axisymmetric mesh is generated for the cross-section of a disk. The axisymmetric mesh is then used to create a three-dimensional model in the second input file with *SYMMETRIC MODEL GENERATION. A steady-state rolling analysis is then performed. The steady-state results are imported into ABAQUS/Explicit, where the result serves as the initial condition to a transient rolling analysis. Three element types are tested. The following material properties are used (the units are not important):
The results demonstrate that steady-state transport analyses are transferred correctly between ABAQUS/Explicit and ABAQUS/Standard.
Axisymmetric mesh generation in ABAQUS/Standard.
Three-dimensional model creation and steady-state rolling analysis in ABAQUS/Standard.
Transient rolling analysis in ABAQUS/Explicit.
Transient rolling analysis using the general contact capability in ABAQUS/Explicit.
Axisymmetric mesh generation in ABAQUS/Standard.
Three-dimensional model creation and steady-state rolling analysis in ABAQUS/Standard.
Transient rolling analysis in ABAQUS/Explicit.
Transient rolling analysis using the general contact capability in ABAQUS/Explicit.
Axisymmetric mesh generation in ABAQUS/Standard.
Three-dimensional model creation and steady-state rolling analysis in ABAQUS/Standard.
Transient rolling analysis in ABAQUS/Explicit.
The tests outlined in this section verify the accuracy of transfer of coupled temperature-displacement elements from ABAQUS/Explicit to ABAQUS/Standard and vice versa. The tests are performed for each of the elements listed.
The tests for the transfer from ABAQUS/Explicit to ABAQUS/Standard involve a single element subjected to a combination of thermal loads and prescribed displacements in a *DYNAMIC TEMPERATURE-DISPLACEMENT, EXPLICIT analysis. The results from the end of this analysis are then transferred to an ABAQUS/Standard *COUPLED TEMPERATURE-DISPLACEMENT analysis in which all the loads on the element are removed and the element is allowed to spring back. The *IMPORT analysis is performed for all combinations of the UPDATE and STATE parameters.
The tests for the transfer from ABAQUS/Standard to ABAQUS/Explicit involve a single element subjected to a combination of thermal loads and prescribed displacements in a *COUPLED TEMPERATURE-DISPLACEMENT analysis. The results from the end of this analysis are then transferred to an ABAQUS/Explicit *DYNAMIC TEMPERATURE-DISPLACEMENT, EXPLICIT analysis in which all the loads on the element are removed so that the element can return to its original undeformed configuration. The *IMPORT analysis is performed for all combinations of the UPDATE and STATE parameters.
The tests demonstrate that the temperature and all state variables, such as the stresses and elastic strains, are transferred accurately from ABAQUS/Explicit to ABAQUS/Standard and vice versa when STATE=YES on the *IMPORT option. When UPDATE=YES, the reference configuration is updated so that the total strains at the beginning of the import analysis are set to zero; when UPDATE=NO, the total strains are continuous across the transfer from one analysis code to another.
ABAQUS/Explicit analysis.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Explicit analysis.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Explicit analysis.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Explicit analysis.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Explicit analysis.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Explicit analysis.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Explicit analysis.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Explicit analysis.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Standard analysis.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Standard analysis.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Standard analysis.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Standard analysis.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Standard analysis.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Standard analysis.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Standard analysis.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Standard analysis.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=NO.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=YES.
The tests outlined in this section verify the accuracy of the transfer of rebar layers and embedded elements from ABAQUS/Explicit to ABAQUS/Standard and vice versa. The tests are performed for each of the elements listed.
The tests for the transfer from ABAQUS/Explicit to ABAQUS/Standard involve elements with rebar layers or embedded elements subjected to loading over two *DYNAMIC, EXPLICIT steps. The results from the end of the first step are then transferred to an ABAQUS/Standard *STATIC import analysis. In addition to the imported elements, new elements with rebar layers or embedded elements are defined in the import analysis. These new elements are identical to the initial element definitions of the imported elements in the original ABAQUS/Explicit analysis. The *IMPORT analysis is performed for the combinations UPDATE=NO, STATE=YES and UPDATE=YES, STATE=YES.
The tests for the transfer from ABAQUS/Standard to ABAQUS/Explicit involve elements with rebar layers or embedded elements subjected to loading over two *STATIC steps. The results from the end of the first step are then transferred to an ABAQUS/Explicit *DYNAMIC, EXPLICIT import analysis. In addition to the imported elements, new elements with rebar layers or embedded elements are defined in the import analysis. These new elements are identical to the initial element definitions of the imported elements in the original ABAQUS/Standard analysis. The *IMPORT analysis is performed for the combinations UPDATE=NO, STATE=YES and UPDATE=YES, STATE=YES.
The results for the two sets of elements in the import analysis (that is, the newly defined elements and the imported elements) are identical at the end of the analysis when UPDATE=NO, STATE=YES on the *IMPORT option. In addition, these results are in good agreement with the results at the end of the second step of the original analysis. These tests demonstrate that appropriate quantities in the rebar layer and embedded elements (such as the stresses, rebar orientations, strains, etc.) are transferred accurately from ABAQUS/Explicit to ABAQUS/Standard and vice versa. The only differences in the results at the end of the import analysis when UPDATE=YES is compared to the results when UPDATE=NO are in the kinematic quantities such as the total strains, rebar rotations, etc. When UPDATE=YES in the import analysis, the reference configuration is updated so that the total strains and the rebar rotations at the beginning of the import analysis are set to zero; when UPDATE=NO, the total strains and the rebar rotations are continuous across the transfer from one analysis code to another.
ABAQUS/Explicit analysis.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Explicit analysis.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Explicit analysis.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Explicit analysis.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Explicit analysis.
ABAQUS/Standard import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Standard import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Standard analysis.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Standard analysis.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Standard analysis.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Standard analysis.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=YES.
ABAQUS/Standard analysis.
ABAQUS/Explicit import analysis with UPDATE=NO and STATE=YES.
ABAQUS/Explicit import analysis with UPDATE=YES and STATE=YES.
The tests outlined in this section verify the transfer of results between ABAQUS analysis products by performing a series of transfers between ABAQUS/Explicit and ABAQUS/Standard and also from one ABAQUS/Standard analysis to another ABAQUS/Standard analysis using the *IMPORT option. The finite element model for each test is a cantilever beam composed of the element types listed and subjected to a series of loading and springback steps in both ABAQUS/Standard and ABAQUS/Explicit. The transfer of results from one analysis to another is verified. All the tests use the UPDATE=NO, STATE=YES parameters on the *IMPORT option.
The material used in each test is isotropic linear elasticity, together with Mises plasticity. The material properties used are (the units are not important):
These tests confirm that the results from the end of each analysis are accurately transferred to the subsequent import analysis.
ABAQUS/Standard analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Explicit import analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Standard import analysis; cantilever beam is subjected to extension.
ABAQUS/Standard import analysis; springback.
ABAQUS/Explicit import analysis; cantilever beam is subjected to twisting.
ABAQUS/Standard import analysis; springback.
ABAQUS/Standard analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Explicit import analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Standard import analysis; cantilever beam is subjected to extension.
ABAQUS/Standard import analysis; springback.
ABAQUS/Explicit import analysis; cantilever beam is subjected to twisting.
ABAQUS/Standard import analysis; springback.
ABAQUS/Standard analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Explicit import analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Standard import analysis; cantilever beam is subjected to extension.
ABAQUS/Standard import analysis; springback.
ABAQUS/Explicit import analysis; cantilever beam is subjected to twisting.
ABAQUS/Standard import analysis; springback.
ABAQUS/Standard analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Explicit import analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Standard import analysis; cantilever beam is subjected to extension.
ABAQUS/Standard import analysis; springback.
ABAQUS/Standard analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Explicit import analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Standard import analysis; cantilever beam is subjected to extension.
ABAQUS/Standard import analysis; springback.
ABAQUS/Standard analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Explicit import analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Standard import analysis; cantilever beam is subjected to extension.
ABAQUS/Standard import analysis; springback.
ABAQUS/Standard analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Explicit import analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Standard import analysis; cantilever beam is subjected to extension.
ABAQUS/Standard import analysis; springback.
ABAQUS/Standard analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Explicit import analysis; cantilever beam is subjected to bending.
ABAQUS/Standard import analysis; springback.
ABAQUS/Standard import analysis; cantilever beam is subjected to extension.
ABAQUS/Standard import analysis; springback.
ABAQUS/Explicit import analysis; cantilever beam is subjected to twisting.
ABAQUS/Standard import analysis; springback.
=200.0 × 109
=0.3