Filter
Top Products
Section 5
5-369
g) Analysis and CHANGE are required between primary cases
for PERFORM CABLE ANALYSIS.
h) Analysis and CHANGE are required after each UBC case if the
case is subsequently referred to in a Repeat Load command or
if the UBC case will be re-solved after a Select command or
after a Multiple analysis.
Example
Before CHANGE
1 PINNED
2 FIXED BUT FX MY MZ
3 FIXED BUT FX MX MY MZ
After CHANGE
1 PINNED
2 FIXED
3 FIXED BUT FX MZ
The CHANGE command is not necessary when only member
properties are revised to perform a new analysis. This is typically
the case in which the user has asked for a member selection and
then uses the PERFORM ANALYSIS command to reanalyze the
structure based on the new member properties.
See Section
5.18
Notes
1) If new load cases are specified after the CHANGE command
such as in a structure where the INACTIVE MEMBER
command is used, the user needs to define the total number of
primary load cases using the SET NL option (see Section 5.5
and Example 4).
2) Multiple Analyses using the CHANGE command should not be
performed if the input file contains load cases involving
dynamic analysis or Moving Load Generation.