要素から材料データまでの修正項目
________________________ *ELEMENT ___________________
Keyword: *SECTION_SOLID
Slightly modify implicit elform3 to make it compatible with explicit
elform3.
Keyword: *SECTION_SOLID
Fix the deformation gradient calculation for linear solid element type 18.
A test case with material 123 was calculating material failure in the first cycle.
Keyword: *EOS_USER_DEFINED
Fix bug associated with *EOS_USER_DEFINED in combination with ELFORM4 tetrahedrons.
Keyword: *SECTION_SOLID, *DATABASE_GLSTAT
Fix spurious kinetic energy growth in glstat data of elform4 tets.
Keyword: *ELEMENT_SHELL_NURBS_PATCH, *ELEMENT_GENERALIZED_SHELL
Renamed *ELEMENT_NURBS_PATCH_2D to *ELEMENT_SHELL_NURBS_PATCH
Activate *MAT_24 for isogeometric and generalized shells.
Keyword: *INTIIAL_STRESS_SOLID
Fix reading of initial stresses for pentahedrons.
Keyword: *SECTION_TSHELL
Fix problem of tshells not always eroding after reaching failure criterion.
Keyword: *SECTION_SHELL, *SECTION_SOLID
Fix problem whereby 1-point 3D solid elements and 2D solid elements
could generate strain during rigid body motion when using single precision.
Keyword: *DAMPING_PART_STIFFNESS
Fix stiffness damping to work correctly for solids.
Keyword: *SECTION_TSHELL, *CONTROL_PARALLEL
Fix SMP parallel consistancy when PARA=1 in *CONTROL_PARALLEL for
thick shell forms 3 and 5, brick form 18, tet form 13.
Keyword: *CONTROL_ACCURACY, *SECTION_SOLID
Correct pentehedral (form 15) brick element when used with invariant
node numbering. The symptom was a lack of parallel consistancy, but the
real problem was an incorrect calculation of the transformation matrix so
the behavior of ortho/anisotropic materials was incorrect.
Keyword: *SECTION_SHELL
Correct bug in shell formulations 23 and 24 affecting result in pure
bending.
Keyword: *SECTION_SHELL, *MAT_138, *MAT_240
Fix bug affecting 2D cohesive elements (*SECTION_SHELL, ELFORM=46/47)
comprised of *MAT_COHESIVE_MIXED_MODE or
*MAT_COHESIVE_MIXED_MODE_ELASTOPLASTIC_RATE.
Keyword: *SECTION_SHELL
Fix stress output for triangular shell formulation 17.
Fix output issues for shell element types 18, 23 and 24.
Keyword: *SECTION_SHELL
Fix bug in output of shell element type 18 (linear DK).
Keyword: *SECTION_SHELL
Add output of strain for 6-node triangular shell and 8-node quad shell
(shell formulations 23 and 24).
Also fix implicit formulation of these shells.
Keyword: *SECTION_SHELL
Improve load distribution in quadratic shell formulations 23 and 24.
Keyword: *SECTION_SOLID
Improve accuracy of solid element type 13 (tetrahedron).
Keyword: *SECTION_SHELL
Fix for thickness update of generalized and isogeometric shells.
Keyword: *SECTION_SHELL
Fix bug in rotation of fibers in shell formulationss 23 and 24, and
allow mid side nodes to take part in rigid body.
Keyword: *SECTION_TSHELL, *MAT_USER_DEFINED_MATERIAL_MODELS
Fix thick shell forms 3 and 5 when used with user defined materials that
have orthotropic properties defined (IORTHO=1). Without the fix, the strain
increment, stress and deformation gradient transformations are incorrect.
Keyword: *SECTION_SOLID
Add clean error termination when wrong solid element formulation is
specified for 10-noded tetrahedrons.
________________________ *FREQUENCY_DOMAIN ___________________
Keyword: *FREQUENCY_DOMAIN_ACOUSTIC_BEM
Fix BEM acoustics when using set_segment for acoustic field nodes.
Keyword: *FREQUENCY_DOMAIN_RANDOM_VIBRATION
Fix bug in reading mode information in random vibration.
Keyword: *FREQUENCY_DOMAIN_RANDOM_VIBRATION
Fix bug in reading modal information and writing d3rms in random vibration analysis.
Keyword: *DATABASE_FREQUENCY_…
Fix bug in defining output frequency curve for frequency domain databases.
Keyword: *FREQUENCY_DOMAIN_ACOUSIC_BEM
Add a fringe plot option to all the BEM acoustic solvers.
Update BEM acoustics to remove the limitation on number of acoustic field nodes.
Keyword: *FREQUENCY_DOMAIN_ACOUSTIC_FEM
Update frequency domain fem acoustics to introduce free pressure boundary
condition.
Keyword: *FREQUENCY_DOMAIN_ACOUSTIC_FEM
Update frequency domain fem acoustics, to allow using the results of i
transient analysis.
Keyword: *FREQUENCY_DOMAIN_ACOUTIC_FEM
Fix frequency domain FEM acoustics for tetrahedrons.
Keyword: *FREQUENCY_DOMAIN_FRF
Fix a bug in FRF computation with pressure load.
Keyword: *FREQUENCY_DOMAIN_ACOUSTIC_BEM
Fix a bug in restarting bem acoustics with SSD response.
Keyword: *FREQUENCY_DOMAIN_SSD
Fix bug in SSD with multiple excitations.
Fix bug in SSD when using local damping option.
Keyword: *FREQUENCY_DOMAIN_RANDOM_VIBRATION
Add xyplot output of psd_curve_print, converted from time history load,
for random vibration LDTYP=2.
Keyword: *FREQUENCY_DOMAIN_SSD
Update on SSD to allow multi-axial excitation.
Keyword: *FREQUENCY_DOMAIN_SSD
Add output of beam integration point values in Steady State Dynamics.
Keyword: *FREQUENCY_DOMAIN_RANDOM_VIBRATION_FATIGUE
Add the option to define SN fatigue curves by two equations, for random fatigue.
Implemented Dirlik method to random fatigue analysis (mode acceleration
only).
Keyword: *FREQUENCY_DOMAIN_FRF
Extend FRF to base velocity and base displacement excitation.
Keyword: *FREQUENCY_DOMAIN_ACOUSTIC_FEM
Add Press_Pa_real and Press_Pa_imag output to frequency domain fem acoustics.
Keyword: *FREQUENCY_DOMAIN_RESPONSE_SPECTRUM
Add Double Sum method to response spectrum analysis (MCOMB=3).
Keyword: *FREQUENCY_DOMAIN_SSD
Fix a bug in writing nodout_ssd and elout_ssd files.
________________________ *INITIAL ___________________
Keyword: *INITIAL_STRESS_SOLID
Add transformation of solid stresses input with *INITIAL_STRESS_SOLID
when *INCLUDE_TRANSFORM rotates geometry.
________________________ *LOAD ___________________
Keyword: *LOAD_BLAST_ENHANCED
Fix blast wind velocity and wave index for BLAST=4.
Keyword: *LOAD_BLAST_ENHANCED
Report the minimum computed arrival time.
Keyword: *LOAD_SSA
Fix problem of incorrectly reading in explosive charge definitions.
Keyword: *LOAD_THERMAL_VARIABLE_BEAM
Fix problem of *LOAD_THERMAL_VARIABLE_BEAM giving wrong temperatures for
tubular sections.
Keyword: *LOAD_BLAST_ENHANCED
Fix an index problem for the blast origin when multiple
charges are defined. This problem elicited false warning messages during
initialization and had no ill effect on the actual blast load.
Keyword: *LOAD_RIGID_BODY
Add warning message if *LOAD_RIGID_BODY part is a slave part in
*CONSTRAINED_RIGID_BODIES.
Keyword: *CONTROL_ADAPTIVE
Fix problem when *CONTROL_ADAPTIVE and *LOAD_SEGMENT/*LOAD_SEGMENT_SET
are used together for 2D analysis; problem was the effect of *LOAD_SEGMENT i
disappearred after adaptive step.
Keyword: *LOAD_BLAST_ENHANCED
When BLAST=4 in *LOAD_BLAST_ENHANCED, eliminate ground encounter when
determining which entity is first hit by a shock wave. Use correct
time parameters and scaled distance so velocity decay is correctly
computed for encounter with the ground reflected wave.
________________________ *MAT ___________________
Keyword: *DEFINE_CONNECTION_PROPERTIES
Fix case of AREAEQ.ne.0:
The true area was not correctly used in the failure function,
if the exponents EXSN, EXSB, EXSS were not 1.0.
Keyword: *MAT_ADD_EROSION
Fix GISSMO damage history output to d3hsp.
Keyword: *MAT_156,_221,_226,_232,_233,_244,_267
Fix various material model bugs in
*MAT_MUSCLE (for truss elements),
*MAT_ORTHOTROPIC_SIMPLIED_DAMAGE,
*MAT_KINEMATIC_HARDENING_BARLAT89,
*MAT_BIOT_HYSTERETIC,
*MAT_CAZACU_BARLAT,
*MAT_UHS_STEEL,
*MAT_EIGHT_CHAIN_RUBBER
Keyword: *MAT_034
Make fabric material forms 12, 13, and 14 output global stress to the
d3plot file like the other fabric forms and other materials.
Keyword: *MAT_244
Implement *MAT_UHS_STEEL for 2D solid elements.
Keyword: *MAT_100
Make *MAT_SPOTWELD/SIGY<0 consistent with *MAT_SPOTWELD/SIGY>0.
Keyword: *MAT_174
Fix output of curvature to “plastic strain” position in output of
*MAT_RC_BEAM.
Keyword: *MAT_125
Fix energy calculation in *MAT_KINEMATIC_TRANSVERSELY_ANISOTROPIC.
Keyword: *MAT_…_THERMAL
Correct calculation of heat flux vector for orthotropic materials.
Keyword: *MAT_036, *MAT_190
A bug fix for these materials in the case of equi-biaxial stretching.
Keyword: *MAT_100
Fix for damage calculation in *MAT_SPOTWELD_DAMAGE-FAILURE when SIGY<0.
Keyword: *MAT_THERMAL_USER_DEFINED
Correct temperature in user materials in combination with 2D solids.
Correct history variable handling in thermal user materials.
Keyword: *MAT_233
Fix NUMINT option of *MAT_CAZACU_BARLAT.
Add new options related to rate effects and damage.
Keyword: *MAT_019
Make the strain rate the first history variable after the
plastic strain for all versions of *MAT_STRAIN_RATE_DEPENDENT_PLASTICITY.
Keyword: *MAT_181
Fix instability of *MAT_SIMPLIFIED_RUBBER/FOAM in full deck restart.
Keyword: *MAT_224
Add *MAT_TABULATED_JOHNSON_COOK for type 13 tetrahedon.
Keyword: *MAT_ADD_EROSION
Modify GISSMO parameters SHRF and BIAXF.
Keyword: *MAT_169
Add new option to *MAT_ARUP_ADHESIVE: If parameter BTHK<0, then do not
modify time step. This helps to avoid very small time steps, but it
can affect stability.
Keyword: *MAT_036
Correct bad output of strains and thickness reduction to d3plot for
*MAT_3-PARAMETER_BARLAT.
Keyword: *PART_COMPOSITE
Enable *PART_COMPOSITE to work with material types 104, 108, 122, 133, 135,
137, 157, 223, 226, 229, 233, 234, 235, and 242. Previous, a keyword
error was reported.
Keyword: *MAT_187
Fix for large curve IDs in *MAT_SAMP-1.
Keyword: *MAT_123
Fix RTCL damage of *MAT_MODIFIED_PIECEWISE_LINEAR_PLASTICITY_RTCL such
the input parameter EPS0 is now used correctly.
Add parameter TRIAX which is a limit on the triaxiality, beyond
which damage will not grow.
Keyword: *MAT_120, *MAT_120_JC
Add extra history variable 16 to *MAT_GURSON and *MAT_GURSON_JC for
convenience in checking against GISSMO damage model.
Keyword: *MAT_082
Fix bug in *MAT_PLASTICITY_WITH_DAMAGE_ORTHO for brick elements and
2D solids which caused elements to spuriously vanish.
Keyword: *MAT_024 and others
Improve user-defined failure subroutine template matusr_24 including
passing of updated strain.
Keyword: *MAT_100
Fix the BETA>0 option for brick or brick assembly spot welds that use
DMGOPT=2, 10, 11, and 12. Weld failure was not occuring after damage
initialization.
Keyword: *MAT_234
Fix calculation of sound speed for *MAT_VISCOELASTIC_LOOSE_FABRIC.
Include element number when writing out failure message.
Keyword: *MAT_124
Implement an optional Young’s modulus for compression in
*MAT_PLASTICITY_COMPRESSION_TENSION.
Keyword: *SECTION_SOLID, *MAT_…
Improve accuracy of type 13 (pressure-averaged) tetrahedron.
Modify several existing material models for type 13 tetrahedron,
including *mat_015, *mat_098, *mat_106, *mat_224.
Keyword: *MAT_024
Made beam *MAT_PIECEWISE_LINEAR_PLASTCITY plasticity iteration consistent i
with *MAT_PLASTIC_KINEMATIC (*MAT_003).
Keyword: *MAT_NONLOCAL
Modify nonlocal failure for thick shells so that if elements are stacked,
averaging will not occur with elements on the top and bottom, only those on
the side.
Keyword: *MAT_…
Fix incorrect experimental curve data output to curveplot file for
materials 76, 77, 134, 175, 176, 178 and 276.
Keyword: *MAT_058, *MAT_158
Enable the negative AOPT (*DEFINE_COORDINATE_NODES) option for
*MAT_LAMINATED_COMPOSITE_FABRIC and *MAT_RATE_SENSITIVE_COMPOSITE_FABRIC.
Keyword: *EOS_…
Add input check for duplication of EOS ID.
Keyword: *MAT_CRUSHABLE_FOAM
Fix instability problem of *MAT_CRUSHABLE_FOAM for plain strain analysis.
Keyword: *MAT_107
Fix in Zerilli-Armstrong law in *MAT_MODIFIED_JOHNSON_COOK
Keyword: *MAT_172
Modify *MAT_CONCRETE_EC2 so that when *INTEGRATION_SHELL or
*PART_COMPOSITE is used, the AOPT-related angle is recalculated for
each integration point.
The standard LS-DYNA treatment is to get the AOPT-related angle from the
first IP made of an orthotropic material, then use the same angle for
subsequent points.
Keyword: Various *MAT_… including *MAT_ADD_EROSION
Fix for NUMINT<0 in materials 120, 123, 187, 224, and GISSMO:
solid elements are now deleted directly after 1st IP fails,
i.e., input value of NUMINT is ignored.
Keyword: *MAT_272
Improve *MAT_RHT, including automatic parameter generation.
Keyword: *MAT_072R3
Make updates to *MAT_CONCRETE_DAMAGE_REL3 per KCSE.
Keyword: *MAT_072R3
Implement updates from KCSE for *MAT_CONCRETE_DAMAGE_REL3.
Keyword: *MAT_244
Add option to *MAT_UHS_STEEL for automatic switching between cooling and
heating algorithm based on the temperature slope.
Fix scaling of heat flow due to phase transitions in *MAT_UHS_STEEL.
Add thermal scale factor to *MAT_UHS_STEEL.
Support heating and/or reheating of *MAT_UHS_STEEL. The heat equation is
taken from Oddy et al (1996) Microstructural Predictions Including
Arbitrary Thermal Historic ReAustinatization And Carbon Segregation Effects.
Keyword: *MAT_098
Fix bug in *MAT_SIMPLIFIED_JOHNSON_COOK for implicit.
Keyword: *MAT_021
Modify *MAT_ORTHOTROPIC_THERMAL so that it works with angles on the
*SECTION_SHELL or *SECTION_TSHELL card to define material directions for
layers.
Keyword: *MAT_USER_DEFINED_MATERIAL_MODELS
Fix plane strain and axisymmetric elements when used with orthotropic
user-defined materials. This fix affects shell forms 13, 14, 15, 43,
44, 52, 53. The wrong strain and stress transformation was being done.
