Example files realted to LS-DYNA implicit analyses guidelines
2026-01-06, Ansys

Directory Guideline
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Ansys_LS-DYNA_implicit_guideline_2026R1.pdf  
                        Some guidelines for implicit analyses using LS-DYNA

Directory Examples:
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ROPS_linear_stiffness.key
                        Linear static example. Torsional Stiffness of a ROPS
ROPS_geo.key            Geometry file for linear stiffness example

bend001.key             Non-linear static example. Bending of a cantilver 
                         aluminium beam over a rigid support
bend002.key             As bend001.key, but using dnorm = 2 on 
                         *CONTROL_IMPLICIT_SOLUTION
bend_geo001.key          --- geometry file for example above

bolts001.key            Non-linear static example. Bolt pre-tensioning by 
                         *INTIAL_STRESS_SECTION.
                        Initial rigid-body modes handled by 
                         *CONTROL_IMPLICIT_DYNAMICS
bolts002.key            Bolt pre-tensioning using explicit dynamic relaxation
bolts002_geo.key        Geometry file for bolts002.key

buckle001.key           Linear buckling analysis. Buckling of a panel with a
                          bead under axial loading
limitload001.key        Non-linear limit load analysis of a panel with a bead 
                          using the arc-length method

buckling_geo001.key     Geometry file for buckling analyses

eigen001.key            Eigenfrequency analysis of a panel with a bead
eigen002.key            Intermittent eigenfrequency anlyses of the bolt pre-
                         tensioning example (bolts001.key)

transient001.key        Linear transient modal dynamic example. An L-beam under
                         transinet loading with modal damping
transient_nonlin001.key Non-linear transinet dynamic example. An L-beam under
                         transinet loading with damping and contact.
support001.key          Support, geometry used by transient_nonlin001.key

sticking_contact.key    Explample of making a contact stick, tiebreak contact 
                         with option=1
sticking_contact_geo.key --- geometry for the above example

run_2d.key              Axisymmetric analysis of an expansion tube
geo_2d001.key           Geometry file for the 2D analysis

TPU.key                 Simulation of testing of TPU, using MAT_181. Results
                        are compared in the image compare.png
Insert_and_interference.key
                        Initial penetrations / press-fit and large deformation 
                         with sliding contact
Large_deformation.key   General rubber deformation analysis

thermal.key             Basic example of coupled thermal structural analysis
geo_thermal002.key      Geometry file for thermal example

run_rotodyn.key         Exmample file for *CONTROL_IMPLICIT_ROTATIONAL_DYNAMICS
geo_rotodyn.key         Geometry file for the rotational dynamics example

run_pressfit.key        Simplified model for pressfit using the linear solver 
                         with nonlinear contacts
geo_pressfit001.key     Geometry file for the presffit example 

SuperElement            Folder containing example of creating and using super 
                         elements in implicit
                         This example requires smp/R15.0.2, smp/mpp/R16 or later

ElementOutput           Example of different output options for element results

Subdirectory implexpl
--------------------------------------------------------------------------------
implexpl/all_in_one     Example of implicit / explicit switching 
implexpl/multistage     Example of implicit / explicit switching using *CASE
                           and dynain.lsda
implexpl/restart        Example of implicit / explicit switching using full 
                           deck restart

Directory INCLUDE_FILES
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Folder containing include files with control card setting definitions etc. See
  readme.txt in the directory


Directory RESTART                 
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Folder containing example files for restart analyses
                           See readme.txt in the directory
RESTART/DYNAIN          Folder containing example files for restart and 
                           continuation of analyses using dynain.lsda and *CASE
                           See readme.txt in the directory

Directory Frequency_domain        
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Folder containing frequency domain analyses examples. See readme.txt in the 
 directory
                       
Directory Templates
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Folder containting examples of Templates for use with LS-PrePost 4.13.4 or 
 later.
