D-R-A-F-T
BL Card: Boundary Loading (Mass)
Optional
Card Description: Used to assign mass loading on the boundary.
Field
Variable
Value
Description
0, C 1-2
IC1
BL
Card group identifier.
0, C 3
IC3
Card type identifier.
Specifies Option 1: The mass boundary loading in
b
/
data field 2 and 3 of this card will be used for all
values (J) equal to or greater than ISTART.
Specifies Option 2: The mass boundary loading are
E
coded by element number.
Specifies Option 3: The mass boundary loading are
T
coded by material type number (IMAT).
Code the node number, element number or material
1
ISTART
type as specified by IC3 above in data field 0,
column 3.
Option 1 and 2: The starting element number.
-,+
Will load all the elements that are ≥ISTART.
Option 3: The element material type number.
-,+
Will load all the elements which satisfy the material
type.
2
SRCEL(J)
-,0, +
Mass loading at ISTART=J.
Units= kg/sec.
Units: Total mass/sec in the appropriate units of the simulation.
EXAMPLE: To calculate total mass contribution (kg) from a BLE boundary
specification in kg/sec:
(LOAD kg/sec) x (#Elem Loaded) x (#TimeSteps) x (deltaT hr) x (60 min/hr) x (60
sec/min) = MASS in kg
78 Run Control BL Card
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