complexfrequencys.f File Reference

Go to the source code of this file.

Functions/Subroutines
subroutine	complexfrequencys (inpc, textpart, nmethod, mei, iperturb, istep, istat, n, iline, ipol, inl, ipoinp, inp, ithermal, xboun, nboun, ipoinpc, mcs, cs, cyclicsymmetry)

Function/Subroutine Documentation

complexfrequencys()

subroutine complexfrequencys	(	character*1, dimension(*)	inpc,
		character*132, dimension(16)	textpart,
		integer	nmethod,
		integer, dimension(4)	mei,
		integer, dimension(2)	iperturb,
		integer	istep,
		integer	istat,
		integer	n,
		integer	iline,
		integer	ipol,
		integer	inl,
		integer, dimension(2,*)	ipoinp,
		integer, dimension(3,*)	inp,
		integer	ithermal,
		real*8, dimension(*)	xboun,
		integer	nboun,
		integer, dimension(0:*)	ipoinpc,
		integer	mcs,
		real*8, dimension(17,*)	cs,
		integer	cyclicsymmetry
	)

!
!     reading the input deck: *COMPLEX FREQUENCY
!
      implicit none
!
      character*1 inpc(*)
      character*132 textpart(16)
!
      integer nmethod,mei(4),istep,istat,iperturb(2),i,nboun,
     &  n,key,iline,ipol,inl,ipoinp(2,*),inp(3,*),nev,ithermal,
     &  ipoinpc(0:*),mcs,cyclicsymmetry
!
      real*8 xboun(*),cs(17,*)
!
      mei(4)=0
!
      if(istep.lt.1) then
         write(*,*) '*ERROR reading *COMPLEX FREQUENCY:'
         write(*,*) '       *COMPLEX FREQUENCY can only be used'
         write(*,*) '       within a STEP'
         call exit(201)
      endif
!
!     no heat transfer analysis
!
      if(ithermal.gt.1) then
         ithermal=1
      endif
!
!     check for cyclic symmetry
!
      if((mcs.ne.0).and.(cs(2,1).ge.0.d0)) then
         cyclicsymmetry=1
      endif
!
      nmethod=0
      do i=2,n
         if(textpart(i)(1:8).eq.'CORIOLIS') then
            nmethod=6
         elseif(textpart(i)(1:7).eq.'FLUTTER') then
            nmethod=7
         elseif(textpart(i)(1:11).eq.'STORAGE=YES') then
            mei(4)=1
         else
            write(*,*) 
     &           '*WARNING reading *COMPLEX FREQUENCY:'
            write(*,*) '         parameter not recognized:'
            write(*,*) '         ',
     &           textpart(i)(1:index(textpart(i),' ')-1)
            call inputwarning(inpc,ipoinpc,iline,
     &"*COMPLEX FREQUENCY%")
         endif
      enddo
      if(nmethod.eq.0) then
         write(*,*) 
     &        '*ERROR reading *COMPLEX FREQUENCY:'
         write(*,*) '       either parameter CORIOLIS'
         write(*,*) '       or parameter FLUTTER is required'
         call inputerror(inpc,ipoinpc,iline,
     &"*COMPLEX FREQUENCY%")
         call exit(201)
      endif
!
c      nmethod=6
      if(iperturb(1).gt.1) iperturb(1)=0
      iperturb(2)=0
!
      call getnewline(inpc,textpart,istat,n,key,iline,ipol,inl,
     &     ipoinp,inp,ipoinpc)
      if((istat.lt.0).or.(key.eq.1)) then
         write(*,*) '*ERROR reading *COMPLEX FREQUENCY:'
         write(*,*) '       definition not complete'
         write(*,*) '  '
         call inputerror(inpc,ipoinpc,iline,
     &"*COMPLEX FREQUENCY%")
         call exit(201)
      endif
      read(textpart(1)(1:10),'(i10)',iostat=istat) nev
      if(istat.gt.0) call inputerror(inpc,ipoinpc,iline,
     &"*COMPLEX FREQUENCY%")
      if(nev.le.0) then
         write(*,*) '*ERROR reading *COMPLEX FREQUENCY:'
         write(*,*) '       less than 1 eigenvalue requested'
         call exit(201)
      endif
!
      mei(1)=nev
!
!     removing nonzero boundary conditions
!
      do i=1,nboun
         xboun(i)=0.d0
      enddo
!
!     correction for cyclic symmetric structures:
!     if the present step was not preceded by a frequency step
!     no nodal diameter has been selected. To make sure that
!     mastructcs is called instead of mastruct a fictitious
!     minimum nodal diameter is stored
!
      if((cyclicsymmetry.eq.1).and.(mcs.ne.0).and.(cs(2,1)<0.d0)) 
     &       cs(2,1)=0.d0
!
      call getnewline(inpc,textpart,istat,n,key,iline,ipol,inl,
     &     ipoinp,inp,ipoinpc)
!
      return