LS-DYNA V971 R3.2.1 (R3.47756)

Features and enhancements included in V971 R3.2.1 that were not available in V971 R3.2 include the following:

Elements:

• Added 1-way slipring

• Add sliprings’ fs and fd as function of time when <0

Loads:

• Added option *LOAD_SEGMENT_SET_ANGLE

• Add warning in *LOAD_BLAST when segments are too close and empirical equation may no longer be valid

Output:

• MESSAG:
• Changed the restart name from messag to message#

• D3PLOT:
• Added flag to d3plot database to signal LsPREPOST that 4 inplane integration points are output. For 1 point shells 3 null inplane points are output.

The remainder of this release notes describes many other enhancements, additions, and fixes made since the release of LS-DYNA version V971 R3.2.

General

• Fix selective mass scaling bug related to element sorting

• Fix in MPP for certain SPC condition non properly enforced in ALE constrain and penalty coupling

Boundary Condition

• Fix in MPP for certain SPC condition non properly enforced in ALE constrain and penalty coupling
• Fix in temperature boundary condition nodes due to noise from interpolation

Constrained Options

• Fix initialization of *CONSTRAINED_INTERPOLATION for solid only models.

Contact Options

• Fix for a possible segmentation fault with eroding segment based contact
• Fix in MPP for initialization problems of some slave node arrays in *CONTACT_ERODING_NODES_TO_SURFACE
• Fix for THKOPT=2 on Contact Optional Card B is working again
• Fix in MPP for MPP Tied Contact

Control Options

• Fix memory problem with *CONTROL_SHELL, ESORT=2 when the model contains any *SECTION_SHELL, ELFORM=5 or *MAT_034 (*MAT_FABRIC)
• Fix selective mass scaling bug related to element sorting
• Fix in MPP for *CONTROL_MPP_DECOMPOSITION_PARTS_DISTRIBUTE and new keyword *CONTROL_MPP_DECOMPOSITION_PARTSET_DISTRIBUTE
• Fix for IACOOP=2 filtering. Filter initial conditions were not stored properly, thus affecting accuracy of results

Database/Output

• Fix missing legend in MPP version of matsum file
• Fix in MPP for drdisp.sif file output
• Fix for restart ascii files that were missing for any restart run
• Fix for output formats of belt curves and retractor number
• Fix for error message for *ELEMENT_BEAM_SECTION
• Fix for hex weld assemblies so that those generated by *DEFINE_HEX_SPOTWELD_ASSEMBLY go through the assembly failure routine and output to swforc as an assembly instead of individual elements

Define options

• Fix for *MAT_083 with *DEFINE_TABLE and *INCLUDE_TRANSFORM. Strain rates are in Table abscissa are now transformed correctly
• Fixed hex spot weld assemblies that under certain circumstances were failing at the wrong time.
• Fix for memory handling of *DEFINE_FUNCTION
• Fix for hex weld assemblies so that those generated by *DEFINE_HEX_SPOTWELD_ASSEMBLY go through the assembly failure routine and output to swforc as an assembly instead of individual elements
• Fix for adaptivity when *DEFINE_FUNCTION is used

Elements

• Fixes for user defined solid
• Fix for *ELEMENT_SEATBELT_SENSOR, which now behaves consistently with the User’s Manual
• Fix for output formats of belt curves and retractor number
• Fix for error message for *ELEMENT_BEAM_SECTION
• Fix in slipring definition which happens when more than one slipring is defined in one single *ELEMENT_SEATBELT_SLIPRING

Include Options

• Fix for *MAT_083 with *DEFINE_TABLE and *INCLUDE_TRANSFORM. Strain rates are in Table abscissa are now transformed correctly
• Fix for *MAT_034 (*MAT_FABRIC) and include transformation of FAC load curve

Material Models

• Fix for Green Naghdi stress rate problem for *MAT_035
• Fix in keyword reader for *MAT_165. *MAT_COMPOSITE_MSC_DMG now can be read as well as *MAT_COMPOSITE_DMG_MSC or *MAT_162.
• Fix for FPE in load curve lookup for *MAT_187 (SAMP-1)
• Fix for *MAT_090 (*MAT_ACOUSTIC) with SMP consistency flag on
• Fix for *MAT_083 with *DEFINE_TABLE and *INCLUDE_TRANSFORM. Strain rates are in Table abscissa are now transformed correctly
• Fixed hex spot weld assemblies that under certain circumstances were failing at the wrong time.
• Fix memory problem with *CONTROL_SHELL, ESORT=2 when the model contains any *SECTION_SHELL, ELFORM=5 or *MAT_034 (*MAT_FABRIC)
• Fix for *MAT_036 related to out-of-plane shear stress cap
• Fixes for *MAT_187. Time step calculation now also correct in case BULK and GMOD are not given
• Fix for *MAT_034 (*MAT_FABRIC) and include transformation of FAC load curve
• Fix for hex weld assemblies so that those generated by *DEFINE_HEX_SPOTWELD_ASSEMBLY go through the assembly failure routine and output to swforc as an assembly instead of individual elements
• Fix for *MAT_162 causing improper delamination behavior in elements without a neighbor element

Section Options

• Fix memory problem with *CONTROL_SHELL, ESORT=2 when the model contains any *SECTION_SHELL, ELFORM=5 or *MAT_034 (*MAT_FABRIC)

Termination

• Fix for adaptivity when *TERMINATION_CURVE is used