menu.data3

Triangular mesh processing tool, currently very few people use this software, but it allows us to gr

   Optionally, these surfaces can be moved within the global coordinate system.
   While in the part or merge phase, use the commands DSD, DASD, ASD, ASDS,
   RSD, RSDS, and DSDS commands to select the surfaces displayed 
   in the graphics.
   While in the part phase, use the SF command to place a face of the mesh
   onto a numbered surface.
  IGESLBLS: toggle the flag to use IGES labels for surfaces.
  NURBSD: a sequence of NURBS surfaces from a CAD/CAM IGES file (see IGESFILE)
   are evaluated and each surface is assigned a TrueGrid surface definition
   number.
   Optionally, these surfaces can be moved within the global coordinate system.
   While in the part or merge phase, use the commands DSD, DASD, ASD, ASDS,
   RSD, RSDS, and DSDS commands to select the surfaces displayed 
   in the graphics.
   While in the part phase, use the SF command to place a face of the mesh
   onto a numbered surface.
  SAVEIGES: save the IGES surface and 3D curve evaluations in a file.
   This should be issued after the IGESFILE, IGESSD, IGESCD, NURBSD,
   SD and CURD commands are issued which evaluate selected surfaces and 3D 
   curves.
   If some of these same surfaces or 3D curves are required in future 
   TrueGrid sessions, use the command USEIGES before issuing the evaluations
   commands. This will save time.
  DLV: display a single CAD IGES level. 
   All other surfaces are removed from the picture.
   All defined surfaces resulting from a CAD IGES surface
   and 3D curves resulting from a CAD IGES curve,
   defined within the specified
   level, are made active for the picture.
  DLVS: display a set of CAD IGES levels. 
   All other surfaces are removed from the picture.
   All defined surfaces resulting from a CAD IGES surface
   and 3D curves resulting from a CAD IGES curve,
   defined within one of the specified levels, are made active 
   for the picture.
  ALV: add a numbered CAD level to the picture. 
   All defined surfaces resulting from a
   CAD IGES surface and 3D curves resulting from a CAD IGES curve,
   defined within the specified
   level, are made active for the picture.
  RLV: remove a numbered CAD level from the picture. 
   All defined surfaces resulting from a
   CAD IGES surface and 3D curves resulting from a CAD IGES curve,
   defined within the specified
   level, are removed from the picture.
  DGRP: display a single CAD IGES associativity group. 
   All other surfaces and curves are removed from the picture.
   All defined surfaces resulting from a CAD IGES surface
   and 3D curves resulting from a CAD IGES curve,
   listed in an IGES associativity group, entity 402,
   are made active for the picture.
  DGRPS: display a set of CAD IGES associativity groups. 
   All other surfaces and curves are removed from the picture.
   All defined surfaces resulting from a CAD IGES surface 
   and 3D curves resulting from a CAD IGES curve,
   listed in one of the specified IGES associativity groups, entity 402,
   are made active for the picture.
  AGRP: add a numbered CAD associativity group to the picture. 
   All defined surfaces resulting from a
   CAD IGES surface and 3D curves resulting from a CAD IGES curve,
   listed in an IGES associativity group, entity 402,
   are made active for the picture.
  RGRP: remove a numbered CAD associativity group from the picture. 
   All defined surfaces resulting from a
   CAD IGES surface and 3D curves resulting from a CAD IGES curve,
   listed in an IGES associativity group, entity 402,
   are removed from the picture.
  VPSD: extract surface definitions from ascii node and polygon data files.
   The node file has one record for each node.
   The first number in the record is the unique positive 
   integer node number, followed
   by the x, y, and z-coordinates in floating point or exponential form.
   These four numbers are comma delimited.
   The polygon data has one record per polygon.
   The first field assigns a group or surface name to the polygon.
   The name is used to sort the polygons into surfaces.
   It is best to group polygons into surfaces so that there are no sharp
   bends in a surface.
   This is followed by a list of ordered node numbers to be connected
   to form the polygon.
   These node numbers refer to the nodes in the node file.
   It is assumed that each polygon is nearly planar.
   Fields in this file are space delimited.
   Each record must be no longer than 128 characters.
   There is also a limit of 30 nodes forming the polygon.
   The set of surfaces can be transformed.
  WIGES: write an IGES file from a list of surfaces. Only those
   surfaces created using the HERMITE option under the SD command
   are allowed at this time.
  WRSD: write two files to contain the coordinates and polygons to
   a polygon surface (VPSD).
  TRIMMING: Select IGES surfaces to be trimmed.
   When this is on, trimmed surfaces will be trimmed by TrueGrid and
   entities related to a trimmed surface will not be evaluated.
   When this is off, then TrueGrid will evaluate IGES surfaces the way
   they were evaluated prior to version 1.2.0.
   This is important because the surfaces will be numbered differently
   and old command files using IGES data may not work properly with
   trimming on.
   This command must be used before reading the IGES file.
   The default is "on".
  LTRIM: select the amount of workspace needed to trim surfaces.
   This command is usually not needed. The default is 2000000.
   Increase the size only if the code makes that suggestion.
DIS/VEL/ACC displacement, velocity and acceleration:
  ACC: Cartesian prescribed nodal boundary acceleration.
  VACC: Cartesian prescribed variable nodal boundary acceleration.
  FD: displacement boundary condition.
  FRB:Prescribed rotational boundary condition. This condition can be
   velocity, acceleration, displacement, or nodal constraint. This is
   suited for DYNA
   (velocities and accelerations) and LSDYNA. In these codes, the selected
   nodes are prescribed this condition about an axis.
  FV: Cartesian prescribed nodal boundary velocities.
  FVV: Cartesian prescribed variable nodal boundary velocities.
  BV: Cartesian prescribed boundary surface velocities for NEKTON.
  INFOL: get information of nodes with a specific load or condition.
  RML: remove specific loads or conditions on a set of nodes.
  RSL: restore specific loads or conditions on a set of nodes.
  VE: initial nodal velocity. This overrides the velocities specified by the
   VELOCITY and ROTATION commands.
   When a node is assigned several velocities, the
   last one specified is the one that is used.
ELECTRIC condition commands:
  EFL: face set is assigned a constant electric flux boundary condition.
  MP: a set of nodes are assigned a constant magnetic potential.
  V: a set of nodes are assigned a constant nodal electrostatic potential
   boundary condition.
  INFOL: get information of nodes with a specific load or condition.
  RML: remove specific loads or conditions on a set of nodes.
  RSL: restore specific loads or conditions on a set of nodes.
FORCE, pressure, loads, and displacement commands:
  ARRI: modify pressure amplitudes and shock arrival time based on
   geometry.
   Use the PR or PRI command to initiate a pressure face.
   Use the FL, FLI, EFL, or EFLI commands to initiate a flux boundary face.
   Amplitudes for FL, FLI, EFL, or EFLI commands are absolute value
   of the calculated value.
   The load curve or load case number is used to associate this
   command with the appropriate pressure/flux faces.
   The origin of the shock can be a point, infinite line, infinite
   plane, or a laser beam.
   The shock arrival time is based on the distance between
   the center of the pressure/flux face and the source of the shock.
   The starting time and shock speed should be specified.
   The cosine option calculates the angle of incidence.
   All pressure/flux faces
   have their amplitudes modified when the cosine option is selected.
   The angle between the normal of the pressure/flux face and the vector
   from each node of the pressure/flux face to the source is calculated.
   Then the pressure
   amplitude at the node is scaled by the cosine of the angle.
   This is done for each node of each pressure/flux face.
   When the laser beam is the source, an additional damping factor
   is calculated.
   This is based on the perpendicular distance of each node from
   the laser beam.
   There are two types of laser calculations: Gaussian and tabular.
   This laser scale function is defined with the DIST command.
   The decay option is also used to scale nodal pressure amplitudes
   by distance from the source of the shock.
   The function can be based on distance, distance squared,
   distance cubed, exponential, or linear.
   The decay distance for a laser is the distance in the beam direction
   only.
   The minimum and maximum pressure amplitude can be specified.
   If a minimum is not selected and the cosine is selected, then the
   minimum defaults to zero.
   The cosine, decay, laser, minimum, and maximum amplitude can be 
   combined.
   The point, line, plane, and laser are mutually exclusive.
   The arrival time is always non-negative.
   If the laser option is selected and if the target is behind the laser,
   then the amplitudes are set to zero.
   It is also possible that the center
   of the pressure/flux face is in front of the laser beam, receiving a
   positive arrival time, while some of the nodes of the pressure
   face are behind the laser, receiving a zero amplitude.
   If there are several ARRI commands issued for the same pressure
   face with the same load curve or load case number, the one with
   the smallest arrival time will be used, excluding arrivals due
   to the pressure/flux face being behind a laser beam.
   If no shock arrival is found for a pressure/flux face, then the pressure
   amplitudes specified by the PR, PRI, FL, FLI, EFL, and EFLI commands
   is left unchanged and the shock arrival time is set to zero.
  DIST: creates a laser scale function for the ARRI command. This
   is functional when the laser option is selected.
   There are two types of functions: Gaussian and tabular.
   The Gaussian has the form:
   a*exp(-(distance-b)**2/(2*c**2))/c
   where a, b, and c are specified. The tabular form is
   a polygonal function. Pairs of coordinates form a function
   where the first coordinate of each pair must be strictly monotonically
   increasing.
  FA: fixed nodal rotations.
  FC: concentrated nodal loads.
   Some codes doing dynamic simulations will require a time dependent
   load curve used to ramp or vary the load with respect to time.
   Use LCD or FLCD to create a numbered load curve.
   This load curve must then be reference in the FC command.
   The load can be turned off globally by assigning a constant zero to the
   load curve.
   Some codes require a set id number so that all loads with
   the same set id number can be switched on or off globally.
   In these cases, assign a set id number instead of a load curve
   number.
   No load curve definition is required in this case.
   Other codes ignore this parameter, so just use a zero.
  FFC: concentrated nodal load with a follower force.
   A follower plane is defined using three nodes.
   The normal of the plane defines the direction of the force.
   This is used for DYNA3D and LS-DYNA.
  PR: pressure loads on element faces in a face set.
   Use the ORPT command in the SETS menu to set the orientation
   of the pressure.
   Note that the ORPT must be used first before creating a face set
   to control the orientation of the faces in the set and consequently
   the direction of the pressure.
  INFOL: get information of nodes with a specific load or condition.
  MOM: nodal moment about one nodal axis in the global coordinate system.
   Some codes doing dynamic simulations will require a time dependent
   load curve used to ramp or vary the moment with respect to time.
   Use LCD or FLCD to create a numbered load curve.
   This load curve must then be reference in the MOM command.
   The load can be turned off globally by assigning a constant zero to the
   load curve.
   Some codes require a set id number so that all moments with
   the same set id number can be switched on or off globally.
   In these cases, assign a set id number instead of a load curve
   number.
   No load curve definition is required in this case.
   Other codes ignore this parameter, so just use a zero.
  FMOM: follower nodal moment.
   A follower plane is defined using three nodes.
   The moment is about the normal of the follower plane.
   This is used for LS-DYNA.
  RML: remove specific loads or conditions on a set of nodes.
  RSL: restore specific loads or conditions on a set of nodes.
RADIATION and temperature commands:
  BF: a face set is assigned a Bulk Fluid (Nodes) condition for TOPAZ3D.
   The normal of the surface points
   in a direction determined by the ORPT command in the SETS menu.
   Note that the ORPT must be used first before creating the face set.
  BFD: bulk fluid definition for TOPAZ.
  CV: a face set is assigned a boundary convection.
   The normal of the surface points
   in a direction determined by the ORPT command in the SETS menu.
   Note that the ORPT must be used first before creating the face set.
  CVT: a face set is assigned a convection thermal load.
   The normal of the surface points
   in a direction determined by the ORPT command in the SETS menu.
   Note that the ORPT must be used first before creating the face set.
  FL: a face set is assigned a surface boundary flux.
   The normal of the surface points in a
   direction determined by the ORPT command in the SETS menu.
   Note that the ORPT must be used first before creating the face set.
  FT: a set of nodes are assigned a temperature boundary condition.
  RB: a face set is assigned a thermal radiation boundary condition.
   The normal of the surface points
   in a direction determined by the ORPT command in the SETS menu.
   Note that the ORPT must be used first before creating the face set.
  RE: a face set is assigned as part of a radiation enclosure.
   The normal of the surface points
   in a direction determined by the ORPT command in the SETS menu.
   Note that the ORPT must be used first before creating the face set.
  TE: a set of nodes are assigned a initial temperatures for all nodes.
   These temperatures will override the temperatures specified by TEMP.
   When this command is invoked, all nodal temperatures are assumed
   to be specified.
   See the TEMP commands.
  TEPRO: a set of nodes are assigned a temperature profile used in the
   DYNA3D and NIKE3D codes,
   temperature option 1.
   Both the base temperature and load curve scaling factor can be
   functions of the x, y, and z-coordinates of the node.
  TM: a set of nodes are assigned a initial temperature condition for
   specified nodes only.
   This command does no invoke temperatures for all nodes
   like the TEMP commands and the TE and TEI commands.
  VVHG: variable volumetric heat generation.
  INFOL: get information of nodes with a specific load or condition.
  RML: remove specific loads or conditions on a set of nodes.
  RSL: restore specific loads or conditions on a set of nodes.
SETS commands:
  ADNSET: add or insert a list of nodes into an ordered node set.
  CRVNSET: order a segment of an ordered node set according to a
   3D curve. Each node is projected to a 3D curve and is assigned
   the arc length of the the projected point on the 3D curve.
   Then the nodes are ordered according to the arc length.