Command
PATRAN creates a neutral PATRAN file with
currently saved data values of the Finite element model (see PATRAN Plus User
Manual, chapter 29). The filename is selected from a file selection dialog.
PATRAN differentiates data cards (in the
following called packet type) with a 2-digit type ID. Each data type starts
with a header card in the format (I2, 8I8) with the following information:
IT =
Data type
ID =
Identification number
IV =
Additional ID
KC =
Number of following cards for this data type
N1-N5 =
Integer values
Such a header card follow KC cards with values
related to the data type.
In the following it will be stated how the
conversion between MAKROS data and PNF data is done.
Packet type 25: Title Card
The following card gives the file name under
witch the data is stored on hard disk.
Packet type 26: Summary Data
The header card contains the following data:
N1 = Number of nodes
N2 = Number of elements
N3 = Number of materials
N4 = Number of element properties
N5 = Number of coordinate frames
The following card contains the date and time
of file creation
Packet type 01: Node data
This card saves nodal coordinates and all
defined boundary conditions specified by the command Constraints.
First card saves external node ID. 2nd
card specifies global cartesian x,y,z-coordinates of this node.
The 3rd card gives parameters ICF = 0, GTYP,
NDF, CONFIG, CID and PSPC just as specified by the command Constraints.
Packet type 02: Element data
This card saves the element related parameters.
The 1st card holds external element ID, shape ID for this element (2 = bar, 3 = tri,
4 = quad, 5 = tet, 7 = wedge, 8 = hex), the number of associated data values
(N1) and if necessary node ID of node in xy-plane (the 3rd node) in case of bar
elements.
The 2nd card holds the number of element nodes
corresponding to element type. CONFIG holds the group ID and PID holds cross
section ID associated with this element. CEID is set to 0.
Next cards hold node IDs for this element.
Packet type 03: Material Properties
This card contains material data specified by
the command Material.
The 1st card saves material ID and type ID for
this material. N1 will be set to 0. Next 20 cards hold 96 material values in
the same order they were entered. Missing values are set to 0.
Packet type 04: Element properties
This card contains cross section properties
defined by the command Cross
section.
The 1st card holds cross-section ID and
material ID. For each element type and for each material one cross section type
must be defined and associated to an element. N1 and N2 define element shape
and the number of element nodes just as for package type 02. N3 holds the given
configuration flag, N4 holds the number of saved data values.
Packet type 05: Coordinate systems
This card contains the parameters for local
coordinate systems.
The 1st card holds external ID of the system
and a type ID (1 = cartesian, 2 = cylindrical, 3 = spherical).
Additional cards hold the coordinates of 3
points defining this coordinate system and 9 values defining the transformation
matrix.
Packet type 06: Distributed element loads
This card contains distributed element loads
defined by the command Element
load.
The 1st card holds element ID and load set ID.
The 2nd card holds the given parameter values
for LTYPE (0 = edge load, 1 = surface load), EFLAG, GFLAG, ICOMP, NODE, NFE (ID
for edge respectively surface for solids).
Additional cards hold the given load
components.
Packet type 07: Nodal loads
This card contains the nodal loads defined by
the command Node
forces.
The 1st card holds node ID and load set ID.
The 2nd card holds the ID of the local
coordinate system and load component flag.
Additional cards hold load components if load
component flags = 1.