Multipoint Random Vibration
Multipoint Random Vibration
(OP)
Anybody knows how to considerer the cross terms during a multipoint Random analysis in Ansys?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
Multipoint Random Vibration
|
RE: Multipoint Random Vibration
RE: Multipoint Random Vibration
A11XX
C21XX A22XX
C31XX C32XX A33XX
C41XX C42XX C43XX A44XX
C51XX C52XX C53XX C54XX A55XX
C61XX C62XX C63XX C64XX C65XX A66XX
C11XY C21XY C31XY C41XY C51XY C61XY A11YY
C12XY C22XY C32XY C42XY C52XY C62XY C21YY A22YY
... A66ZZ
Well the question is: How can I take into account the cross terms in an Ansys Random analysis?
RE: Multipoint Random Vibration
Reading the Ansys Help I find out that in order to take into account the cross correlations between different signals in a multipoint Random Analysis I should use following commands:
Command(s):
COVAL for cospectral values
QDVAL for quadspectral values
PSDSPL for a spatial relationship
PSDWAV for a wave propagation relationship
Could any expert in this topics explain me how to use this parameters in order to take into account the cross correlations during a multipoint base excitation random analysis?
If none of previous commands is defined, how are the signals? correlated or uncorrelated?
Thanks everybody in advance.