# frequencies

Unless otherwise specified, data names are accessible in level 3 only.

`a`- The material parameter a in S-N fatigue equation.
`aa`- The coefficiens to define the acceleration spectrum.
`ab`- The coefficient to define the acceleration spectrum.
`absorb`- The absorption coefficient.
`ac`- The coefficient to define the acceleration spectrum.
`activesuppressed`- Returns non-zero if the entity is set inactive, 0 otherwise.
`ad`- The coefficient to define the acceleration spectrum.
`af`- The coefficient to define the acceleration spectrum.
`amin`- The minimum acceleration.
`angle`- The connection angle of the plate.
`attributesmax`- The number of attributes owned by this entity.
`b`- The material parameter
`b`in S-N fatigue equation. `beam_area`- The beam area.
`beam_dampb`- The damping factor for a bending wave.
`beam_dampl`- The damping factor for a longitudinal wave.
`beam_damps`- The damping factor for a shear wave.
`beam_dampt`- The damping factor for a torsional wave.
`beam_lc1`- The load curve for damping factor for a bending wave.
`beam_lc2`- The load curve for damping factor for a longitudinal wave.
`beam_lc3`- The load curve for damping factor for a shear wave.
`beam_lc4`- The load curve for damping factor for a torsional wave.
`beam_length`- The beam length.
`beamsetid`- The ID of the beam set.
`bemoptions`- The BEM options.
`bemtyp`- The type of input boundary values in BEM analysis.
`bemtyp_curve`- The type of input boundary values in BEM analysis.
`bemtyp_option`- The flag specifying BEMTYP options.
`bwave`- The bending wave.
`c`- The speed of sound of the fluid.
`c_freq`- The speed of sound of the fluid.
`c_negflag`- The flag specifying C options.
`cavity_area`- The cavity area.
`cavity_dampb`- The damping factor for a bending wave.
`cavity_height`- The height of the cavity.
`cavity_lc1`- The load curve for damping factor for a bending wave.
`cavity_length`- The length of the cavity.
`cavity_perim`- The length of the cavity.
`cavity_volume`- The volume of the cavity.
`cavity_width`- The width of the cavity.
`center`- The flag for defining the center point for the sphere.
`center_point_plate`- The coordinates of the center for plate.
`center_point_sphere`- The coordinates of the center for sphere.
`cid`- The ID of the vector defining the load direction for nodal force or base excitation.
`color`- The 1-64 color of the entity.
`color_rgb`- The RGB color of the entity.
`config`- 101 - LS-DYNA FREQUENCY_DOMAIN_ACCELERATION_UNIT
`ctype`- The type of connection.
`dampf`- The modal damping coefficient.
`dba`- The flag for writing out weighted SPL files with different weighting options.
`ddam`- The DDAM option.
`decay`- The decay ratio at the end of the capture duration.
`density`- The sphere mesh density parameter.
`dmpflg`- The damping flag.
`dmpmas`- The mass proportional damping constant Alpha in Rayleigh damping.
`dmpstf`- The stiffness proportional damping constant Beta in Rayleigh damping.
`dmptyp`- The type of damping.
`dof`- The applicable degrees-of-freedom.
`dof1`- The applicable degrees-of-freedom for excitation input.
`dof2`- The applicable degrees-of-freedom for response output.
`dskip`- The threshold load projection ratio.
`dtout`- The time interval between writing velocity or acceleration, and pressure at boundary elements in the binary file, to be proceeded at the end of simulation.
`e`- The young's modulus of subsystem.
`effmas`- The minimum percentage requirement of total modal mass.
`eigenvalue`- The Eigenvalue option.
`erpref`- The ERP reference value.
`erprlf`- The ERP radiation loss factor.
`exclude`- The EXCLUDE option.
`f_begs`- The beginning frequency for using this database.
`f_ends`- The ending frequency for using this database.
`fatigue`- The FATIGUE option.
`fbeg`- The starting frequency.
`fend`- The ending frequency.
`fftwin`- The FFT windows.
`filename`- The path and name of the file which contains model information.
`filenames`- The path and name of the database which contains model information.
`fmax`- The maximum value of output frequencies or maximum frequency for FRF/SEA output.
`fmin`- The minimum value of output frequencies or minimum frequency for FRF output.
`fnmax`- The optional maximum natural frequency employed in FRF computation or modal superposition method.
`fnmin`- The minimum natural frequency in modal superposition method.
`fnmin`- The fringe plot options.
`fspace`- The frequency spacing option for FRF output.
`ibdim`- The inner iteration limit in GMRES iterative solver.
`ibeam`- The flag for plate connected to plate.
`icoarse`- The option for PSD curve coarsening.
`iedge`- The free edge and multi-connection constraints option.
`id`- The ID of the entity.
`include`- The ID of the include file the entity is organized in.
`includeid`- The ID of the include file the entity is organized in.
`inflag`- The frequency interpolation option.
`inftg`- The flag for including initial damage ratio.
`internalid`- The ID of the entity.
`internalname`- The internal name of the entity.
`ipanelu`- The number of strips in U direction.
`ipanelv`- The number of strips in V direction.
`The flag for output files.`- 0 - Press_Pa, Press_dB and bepres (ASCII database file for LS - Prepost) are provided
`iread`- The type of SEA run.
`iss`- The type of SEA run.
`istress`- The stress computation flag.
`itt`- The area moment of inertia about local t-axis.
`iunits`- The flag for unit changes.
`j`- The torsional constant.
`lc1`- The ID of the load curve defining real part of pressure, normal velocity, or impedance, or defining real (in-phase) part (LCFLAG=0) or amplitude (LCFLAG=1) of load as a function of frequency.
`lc2`- The ID of the load curve defining imaginary part of pressure, normal velocity, or impedance, or defining imaginary (out-phase) part (LCFLAG=0) or phase angle (LCFLAG=1) of load as a function of frequency
`lc3`- The ID of the load curve defining load duration for each frequency.
`lc_tbid`- The ID of the load curve or table.
`lcdam`- The ID of the load curve defining mode dependent modal damping coefficient.
`lcdamp`- The ID of the load curve defining frequency dependent modal damping ratio.
`lcflag`- The load curve definition flag.
`lcflags`- The load curve definition flag.
`lcfreq`- The ID of the load curve defining the frequencies for FRF/SEA output.
`lcid_1`- The ID of the curve for real part of frequency dependent complex sound speed.
`lcid_2`- The ID of the curve for imaginary part of frequency dependent complex sound speed.
`lcid_curve`- The ID of the S-N fatigue curve.
`lcid_negative`- The S-N fatigue curve Negative values.
`lcid_option`- The flag specifying LCID options.
`lcids1`- The ID of the load curve to describe the amplitude (or real part) of velocity.
`lcids2`- The ID of the load curve to describe the phase (or imaginary part) of velocity.
`lctyp`- The type of load curve defining modal damping coefficient.
`lctyp2`- The type of load curves (LDPSD1 and LDPSD2) for defining cross PSD.
`lctyp_input_spectrum`- The load curve type for defining the input spectrum.
`ldflag`- The type of loading curves.
`ldflw`- The load curve for exponential decay for TBL in flow-wise direction.
`ldpsd`- The load curve for PSD, SPL, or time history excitation.
`ldpsd1`- The load curve for real part or magnitude of cross PSD.
`ldpsd2`- The load curve for imaginary part or phase angle of cross PSD.
`ldspn`- The load curve for exponential decay for TBL in span-wise direction.
`ldtyp`- The excitation load.
`ldvel`- The load curve for phase velocity.
`len_x`- The length of the longer side of the plate.
`len_y`- The length of the shorter side of the plate.
`length`- The length of the edge in connection.
`lntyp`- The set type for LNID.
`load_i`- The ID of load i for cross PSD.
`load_j`- The ID of load j for cross PSD.
`loadtyp`- The input power type.
`localoptions`- The LOCAL options.
`ltype`- The type of LCID.
`lwave`- The longitudinal wave.
`mag`- The magnitude of the incident sound wave.
`mag_curve`- The ID of the curve defining the frequency dependent magnitude.
`mag_option`- The flag specifying MAG options.
`mass_density_sub`- The mass density of subsystem.
`mattyp`- The material type.
`maxit`- The maximum number of iterations for iterative solver.
`mbeg`- The first mode ID in block n.
`mcomb`- The method for combination of modes.
`mdmax`- The last mode employed in FRF computation or modal superposition method.
`mdmin`- The first mode employed in FRF computation or modal superposition method.
`memory`- The memory flag.
`mend`- The last mode ID in block n.
`method`- The method used in acoustic analysis or modal response analysis.
`mftg`- The method for random fatigue analysis.
`mid`- The mode ID.
`mode_sid`- The mode set identification.
`modeoptions`- The MODE Options.
`moduleid`- The module ID of the entity.
`mount`- The mount type.
`movemt`- The movement type.
`mxtdmp`- The acoustic stiffness and mass matrices dumping.
`n1`- The node or node set or segment set ID for excitation input.
`n1typ`- The type of N1.
`n2typ`- The type of N2.
`napsd`- The number of auto PSD load definitions.
`name`- The name of the entity.
`nbc`- The number of boundary condition cards.
`nboundary`- The number of Boundary conditions.
`ncpsd`- The number of cross PSD load definition.
`ndd`- The number of domain decomposition.
`nelm_x`- The number of elements on longer side of the plate.
`nelm_y`- The number of elements on shorter side of the plate.
`nerp`- The number of ERP panels.
`nexcitations`- The number of excitation loads.
`nfreq`- The number of output frequencies.
`nfreqrange`- The number of frequency range.
`nfrup`- The preconditioner update option.
`nfspace`- The frequency spacing option for SEA output.
`nftg`- The field specifying the number of S-N curves to be defined.
`nftg_negative`- The field specifying the number of S-N curves to be defined.
`Nftg_negflag`- The NFTG option.
`nid`- The node ID or node set ID or segment set ID for acoustic result output.
`nids`- The node ID.
`nmbegend`- The number of mode block cards.
`nmid`- The number of mode ID cards.
`nmsort`- The number of modes to be retained which have the largest load projection ratios.
`noel`- The location where normal velocity or acceleration is taken.
`norm`- The normal direction of the plate.
`norms`- The NORM should be set such that the normal vectors point away from the fluid.
`notyp`- The type of NOUT.
`nout`- The part set or part or segment set or node set ID for response output.
`nova`- The response output type.
`npg`- The number of Gauss integration points.
`nsidext`- The node ID or node set ID or segment set ID of output exterior field points.
`nsidint`- The node or segment set ID of output interior field points.
`nsidpc`- The node set ID for the field points where panel contributions to SPL (Sound Pressure Level) are requested.
`nsids`- The node set ID.
`nspectrum`- The number of input spectrum.
`nsub`- The number of subsystems in this connection.
`ntyp`- The set type.
`ntyp_ssd`- The type of NID.
`num_nsid`- The number of entities.
`num_pid`- The number of entities.
`num_psid`- The number of entities.
`nwaves`- The number of incident waves.
`output`- The output option.
`outputsuppressed`- Returns non-zero if the entity is set "do not export",
`0`otherwise. `partid`- The part ID.
`partsetid`- The part set ID.
`pathoptions`- The PATH Options.
`pid`- The part ID or part set ID to define the acoustic domain.
`pid_sid`- The part ID or part set ID or node set ID.
`pids`- The part ID.
`planeid`- The plane ID for defining the half-space problem.
`plate_area`- The plate area.
`plate_dampb`- The damping factor for bending wave.
`plate_dampl`- The damping factor for longitudinal wave.
`plate_lc2`- The load curve for damping factor for longitudinal wave.
`plate_lc3`- The load curve for damping factor for shear wave.
`plate_length`- The length of the plate.
`plate_perim`- The perimeter of the plate.
`plate_thick`- The thickness of the plate.
`plate_width`- The width of the plate.
`poolid`- The pool number of the entity.
`poolname`- The pool name of the entity.
`pr`- The poisson's ratio of subsystem.
`pref`- The reference pressure to be used to output pressure in dB in the Press_dB file.
`psids`- The part set ID.
`ptyp`- The set type.
`ptyp_ssd`- The type of PID.
`ptyp_ssd`- The type of PID.
`r`- The radius of the sphere.
`r0`- The fluid density.
`radeff`- The radiation efficiency computation flag.
`relatv`- The flag for displacement, velocity and acceleration results.
`restdp`- The restart option.
`restmd`- The restart option when different types of loads are present.
`restmd`- The restart option.
`restrt`- The flag to save an LS-DYNA analysis if the binary output file in the
`(bem=filename)`option has not been changed. `sf`- The load curve scale factor.
`shellsetid`- The shell set ID.
`shptyp`- The ship type.
`sids`- The ID of the load cases.
`snlimt`- The flag setting the algorithm used when stress is lower than the lowest stress on S-N curve or lower than STHRES.
`sntype`- The stress type of S-N curve in fatigue analysis.
`solidsetid`- The solid set ID.
`solver_id`- The solver ID of the entity.
`solverkeyword`- The name of the solver keyword.
`solvername`- The solver name of the entity for entities enabled for name pool, otherwise the internal name of the entity.
`ssdoptions`- The SSD Options.
`ssid2s`- The segment set ID.
`ssids`- The segment set ID.
`sstypes`- The boundary element type.
`std`- The design spectrum standard for shock load.
`sthres`- The fatigue threshold.
`strsf`- The stress scale factor to accommodate different ordinates in S-N curve.
`strtyp`- The stress used in fatigue analysis.
`styp`- The set type.
`styp`- The flag specifying meaning of SID.
`stype`- The flag specifying meaning of SID.
`stype_neg`- The ID of the load cases.
`stype_option`- The flag specifying STYPE option.
`subid`- The ID of subsystem.
`subids`- The ID of subsystem.
`subtyp`- The type of subsystem.
`swave`- The shear wave.
`systemid`- The ID of the system defining wave direction.
`t_hold`- The hold-off period before the exponential window.
`tcoarse`- The tolerance for slope change percentage for removing intermediate points from PSD curve.
`temper`- The temperature.
`texpos`- The exposure time.
`thick`- The thickness of the plate.
`thickshellsetid`- The ID of the thick shell set.
`tolfct`- The tolerance in factorization of the low rank matrix.
`tolitr`- The tolerance for the iterative solver.
`tollr`- The tolerance for low rank approximation of dense matrix.
`trslt`- The request time domain results.
`tstart`- The start time for recording velocity or acceleration in LS-DYNA simulation.
`twave`- The torsional wave.
`twave`- The type of incident sound wave.
`typext`- The output exterior field point type.
`typint`- The output interior field point type.
`umlt`- The multiplier for converting g to [length unit]/[time unit]2.
`unit`- The flag for acceleration unit conversion.
`va`- The coefficients to define the velocity spectrum.
`vad`- The velocity/acceleration/aisplacement flag.
`vad1`- The excitation input type.
`vad2`- The response output type.
`vad_excitation`- The excitation input type.
`vaflag`- The loading type.
`vapsd`- The flag for PSD output.
`varms`- The flag for RMS output.
`vb`- The coefficients to define the velocity spectrum.
`vc`- The coefficients to define the velocity spectrum.
`velout`- The flag for writing out nodal or elemental velocity data.
`vf`- The coefficients to define the velocity spectrum.
`vid`- The vector ID for DOF values of 4.
`vid2`- The vector ID for DOF2=0 for response direction.
`vid_direction`- The vector ID for DOF1=4 for excitation input.
`vidoptions`- The flag specifying the VID options.
`vidvalue`- The direction of shock load.
`x_c`- The x-directional cosine of shock load.
`xcs`- The direction cosines for the place wave, or coordinates of the point source for the spherical wave.
`y_c`- The y-directional cosine of shock load.
`ycs`- The direction cosines for the place wave, or coordinates of the point source for the spherical wave.
`z_c`- The z-directional cosine of shock load.
`zcs`- The direction cosines for the place wave, or coordinates of the point source for the spherical wave.

## Version History

2022