Hi All,

I'm new to Ansys environment & I'm trying to extract space state matrix from my Modal Analysis using SPM post processing command, I followed the following link as a guideline:

https://www.sharcnet.ca/Software/Ansys/17.0/en-us/help/ans_adv/advstatspacmat.html

Everything is working fine except for the definition of Inputs, I want to define Input force at the specified node in the specified direction. I successfully defined my force at the desired location but the problem appears with the direction of force

!************************************************************CODE***************************************************************************************

! ** inputs definition

*dim,inputTab,array,8,2

*dim,inputLab,CHAR,8

 

!INPUT FORCES FOR BEARING A

 

inputTab(1,1) = 2510          ! node 2510 fxA-

inputTab(1,2) = -1             ! ux-

inputLab(1) = 'n2510_ux-'

 

inputTab(2,1) = 363           ! node 363 fxA+

inputTab(2,2) = 1            ! +ux

inputLab(2) = 'n363_ux+'

 

inputTab(3,1) = 360           ! node 360 fyA+

inputTab(3,2) = 2             ! uy

inputLab(3) = '360_uy+'

 

inputTab(4,1) = 359           ! node 359 fyA-

inputTab(4,2) = -2            ! -uy

inputLab(4) = 'n359_uy-'

spmwrite,modal,4,inputTab,inputLab,,,,,2

!**********************************************************************************************************************************************************

Error appears when I try to create a force in negative X- Direction & negative  Y-Direction. Someone can help me the correct syntax for deffining the forces in negative axis.