pyyeti.nastran.bulk.wttload2

pyyeti.nastran.bulk.wttload2(fobj, setid, excite_id, delay, excite_type, t1, t2, f=0.0, p=0.0, c=0.0, b=0.0)[source]

Write a Nastran TLOAD2 card to a file.

Parameters:

  • fobj (string or file_like or 1 or None) – Either a name of a file, or is a file_like object as returned by open() or io.StringIO. Input as integer 1 to write to stdout. Can also be the name of a directory or None; in these cases, a GUI is opened for file selection.

  • setid (integer) – The load set ID number

  • excite_id (integer) – The ID of the load set definition (LOAD, SPCD, etc cards).

  • delay (integer or float) – The time delay. If this is a float, it represents the delay in seconds. If it is an integer, it references a DELAY card.

  • excite_type (string) – The type of excitation. Must be one of ‘load’, ‘disp’, ‘velo’, or ‘acce’.

  • t1 (float) – Time constant 1

  • t2 (float) – Time constant 2, must be greater than t1

  • f (float; optional) – Frequency in cycles per unit time. If not provided, defaults to 0.0.

  • p (float; optional) – Phase angle in degrees. If not provided, defaults to 0.0.

  • c (float; optional) – Exponential coefficient. If not provided, defaults to 0.0.

  • b (float; optional) – Growth coefficient. If not provided, defaults to 0.0.

Notes

This card will be written in 8 fixed-field format using the wtcard8() function.

This card is useful to add a load set to the P matrix when creating an external superelement using EXTSEOUT.

Examples

>>> from pyyeti import nastran
>>> setid, excite_id = 201, 202
>>> delay = .05
>>> excite_type = "load"
>>> t1, t2 = 0.1, 0.2
>>> nastran.wttload2(1, setid, excite_id, delay, excite_type, t1, t2)
TLOAD2       201     202     .05LOAD          .1      .2      0.      0.
+             0.      0.