Element Definition (Topology) Data Records

  An Element Topology Data Set is denoted by a `KEY' of 3 in the data set header record. For each element there is a header record of the form:

KEY, NUMBER, TYPE, GROUP, MATERIAL, SYSID, VARIANT

to be written with the format:

FORMAT (1X, I2, 6I5)

or: FORMAT (1X, I2, I10, 5I5) for 10 digit element number format

Where:

KEY = -1 for a data header record

= -3 for the data set delimiter record which is an otherwise blank record inserted at the end of the data set.

NUMBER = element number

TYPE = element type (see Appendix C)

GROUP = element group number

MATERIAL = material property number

SYSID = local system identifier (not currently used)

VARIANT = element variant number (corresponding to FEMGEN )

Followed by data continuation records (for definition of the element topology) of the form:

KEY, NODE1, NODE2, ..., NODE15

To be written with the format:

FORMAT (1X, I2, 15I5)

or: FORMAT (1X, I2, 10I10) for 10 digit node number format

Where:

KEY = -2 for a data continuation record

NODE1 etc. = node numbers defining the element

Notes:

1.

The data continuation record (KEY = -2) should be repeated as necessary for elements having more than 15 nodes (or 10 nodes with the 10 digit node number format).

2.

Element numbers must be positive, but need not ascend in increments of 1.

3.

Element topology data records may be entered in any order. Note that any element-wise results must be entered in this same order.

4.

Duplicate element numbers are allowed for elements with different group numbers.