Bentley 2006 User Manual
Section 5
5-323
4)
REPEAT LOAD specification cannot be used for load cases
involving UBC load generation unless each UBC case is
followed by an analysis command then CHANGE. For
example,
involving UBC load generation unless each UBC case is
followed by an analysis command then CHANGE. For
example,
Correct usage
LOAD 1
UBC LOAD X 1.0
PDELTA ANALYSIS
CHANGE
LOAD 2
SELFWEIGHT Y -1
PDELTA ANALYSIS
CHANGE
LOAD 3
REPEAT LOAD
1 1.4 2 1.2
PDELTA ANALYSIS
UBC LOAD X 1.0
PDELTA ANALYSIS
CHANGE
LOAD 2
SELFWEIGHT Y -1
PDELTA ANALYSIS
CHANGE
LOAD 3
REPEAT LOAD
1 1.4 2 1.2
PDELTA ANALYSIS
5)
If UBC load generation is performed for the X and the Z (or
Y if Z up) directions, the command for the X direction must
precede the command for the Z (or Y if Z up) direction.
Y if Z up) directions, the command for the X direction must
precede the command for the Z (or Y if Z up) direction.
Incorrect usage
LOAD 1
UBC LOAD Z 1.2
SELFWEIGHT Y- 1
LOAD 2
UBC LOAD X 1.2
SELFWEIGHT Y -1
PDELTA ANALYSIS
UBC LOAD Z 1.2
SELFWEIGHT Y- 1
LOAD 2
UBC LOAD X 1.2
SELFWEIGHT Y -1
PDELTA ANALYSIS