This section explains the content of the reduced complex displacement file (jobname.rfrq).
See The Standard Header for Mechanical APDL Binary Files for a description of this set. File number (Item 1) is 10.
*comdeck,fdrfrq
c *** Copyright ANSYS. All Rights Reserved.
c *** ansys, inc
c ********** description of reduced complex displacement file **********
character*8 RFRQNM
parameter (RFRQNM='rfrq ')
LONGINT rfrqfpL, rfrqfp
integer rfrqbk, rfrqut
common /fdrfrq/ rfrqfpL, rfrqbk, rfrqut
equivalence (rfrqfp,rfrqfpL)
c ********** common variable descriptions ***********
co rfrqfpL file position on file rfrq
co rfrqbk block number for file rfrq
co rfrqut file unit for file rfrq
c See fddesc for documentation of how binary files are stored.
c
c ********** file format **********
c recid tells the identifier for this record. Not all records will have
c identifiers -- they are only indicated for those records whose
c record pointers are stored in the second file header.
c type tells what kind of information is stored in this record:
c i - integer
c dp - double precision
c cmp - complex
c nrec tells how many records of this description are found here
c lrec tells how long the records are (how many items are stored)
c recid type nrec lrec contents
c --- i 1 100 standard ANSYS file header (see binhed8 for
c details of header contents)
c --- i 1 40 .RFRQ FILE HEADER
c
c fun10, nmrow, nmatrx, nmode, numdof,
c maxn, wfmax, lenbac, extopt, ncumit, (10)
c kan, nres, nmUsed, nvect, DSPfmt,
c minmod, 0, modlstp, 0, nEnfdof, (20)
c ptrDOF, ptrDAMP, ptrDAMPh, 0, 0,
c ptrFRQ, ptrDSP, 0, 0, 0, (30)
c ptrFRQh, ptrDSPh,nrkeyPert, kPertrb,Glblenbac,
c cpxmod, SvCode,QRdampKey, 0, 0 (40)
c each item in header is described below:
c fun10 - unit number (rfrq file is 10)
c nmrow - number of rows/columns in matrices
c nmatrx - number of reduced matrices on file
c nmode - number of modes extracted during
c modal analysis
c numdof - number of dofs per node
c maxn - maximum node number
c wfmax - maximum wavefront
c lenbac - number of nodes
c extopt - mode extraction method
c = 3 - unsymmetric Lanczos
c = 4 - damped Lanczos
c = 6 - block Lanczos
c = 8 - SuperNode
c = 9 - PCG Lanczos
c ncumit - total number of iterations done
c during analysis
c kan - analysis type
c = 6 - MSUP harmonic analysis
c nmUsed - number of modes used in mode
c superposition
c nvect - number of generated loads in .mlv
c DSPfmt - 0,physical disps .ne.0,modal coords
c minmod - smallest mode number used
c modlstp- multiple load step key
c ptrDOF - pointer to degree of freedom set
c used in model
c ptrDAMP - pointer to damping values
c ptrDAMPh - High part of DAMP pointer
c ptrFRQ - pointer to the frequencies
c ptrDSP - pointer to the calculated
c displacements
c ptrFRQh- High part of FRQ pointer
c ptrDSPh- High part of DSP pointer
c nrkeyPert - nrkey setting of base analysis (Linear Perturbation)
c kPertrb- Linear Perturbation key
c Glblenbac - global number of nodes (== 0 unless using Distributed Ansys)
c cpxmod - key if complex modes were used
c SvCode - Solver assembly code
c = 1 Symbolic assembly
c QRdampKey - Key for QRDAMP solver use
c for modal analysis preceeding MSUP (MODOPT,QRDAMP)
c = 1 if QRDAMP was used, 0 otherwise
c
c 0 - position not used
c --- i 1 numdof Degrees of freedom per node
c (curdof(i),i=1,numdof)
c dof reference numbers are:
c UX = 1, UY = 2, UZ = 3, ROTX= 4, ROTY= 5, ROTZ= 6, AX = 7, AY = 8
c AZ = 9, VX =10, VY =11, VZ =12, GFV1=13, GFV2=14, GFV3=15, WARP=16
c CONC=17, HDSP=18, PRES=19, TEMP=20, VOLT=21, MAG =22, ENKE=23, ENDS=24
c EMF =25, CURR=26, SP01=27, SP02=28, SP03=29, SP04=30, SP05=31, SP06=32
c --- i 1 lenbac Nodal equivalence table. This table equates
c the number used for storage to the actual
c node number
c (Back(i),i=1,lenbac)
c --- i 1 Glblenbac Global nodal equivalence table. This
c table equates the number used for storage
c to the actual node number. Only written
c by the master process in Distributed Ansys
c (GlbBack(i),i=1,Glblenbac)
c --- dp 1 10 Unused record. contents:
c 1.0, 0.0, 0.0, 0.0, 0.0,
c 0.0, 0.0, 0.0, 0.0, 0.0
c DOF i 1 nmrow Degree of freedom set used
c The DOFs are calculated as (N-1)*numdof+DOF,
c where N is the position number of the node in
c the nodal equivalence table and DOF is the
c DOF reference number given above.
c --- i 1 nmrow+1 Original reduced set of DOFs used.
c The DOFs are calculated as (N-1)*numdof+DOF,
c where N is the position number of the node in
c the nodal equivalence table and DOF is the
c DOF reference number given above.
c DAMP dp 1 nmode+10 Damping values.
c This record is present only for analyses using
c the mode superposition method with MCkey
c activated - HROPT cmd.
c There are nmode+10 entries:
c 1 : nmode - effective damping ratios
c nmode+1 : nmode+4 - alphad, alphad, dmprat, dmpstr
c nmode+5 : nmode+10 - additional entries - zeroed out for now
c FRQ dp 1 nmrow/ Frequencies extracted from the modal analysis.
c nmode+nres This record is present only for analyses using
c the mode superposition method.
c There are nmrrow entries if DSPfmt=0 and nmode+nres
c entries otherwise.
c If cpxmod
c If DSPfmt=0 : (freq(i),i=1,nmrow)
c If DSPfmt!=0 : (freq(i),i=1,nmode+nres)
c Frequencies are complex if DSPfmt=0 and extopt=3 or 4
c or if DSPfmt!=0 and cpxmod = 1.
c For complex frequencies the number of entries is doubled.
c Real parts appear for first half and imaginary parts next.
c If DSPfmt!=0 and cpxmod = 1:
c (dreal(freq(i)),i=1,nmode+nres)
c (dimag(freq(i)),i=nmode+nres,2*(nmode+nres))
c *** The next 3 records are repeated (as a pair)
c *** The number of iterations is stored as ncumit.
c DSP cmp ncumit nmrow+5/ Calculated complex displacements
c nmUsed+5 The first nmrow entries are the displacements
c in the same order as the original set of DOFs
c (see record AFTER ptrDOF). If DSPfmt=0, these
c are physical displacements, If DSPfmt!=0,
c these are the nmUsed modal coordinates instead
c of the nmrow entries.
c
c For the last five entries:
c Real part Imag part
c 1. frequency for these frequency increment
c values
c 2. load step number substep number
c 3. cumulative iteration emrpm (MRPM cmd)
c number
c 4. zero zero
c 5. scale factor numdeflvs
c (cvs(i),i=1,nmrow/nmUsed),(freq,delf),
c (itime,itter),(ncumit,0.0),(0.0,0.0),
c (fscale,numdeflvs)
c Note: If, upon reading of this record, there
c is less than nmrow+5 items in the record,
c then only a selected set of nodes were
c output. Another record follows (integer, less
c than lenbac long) which contains the list of
c nodes for which DOF solutions are available.
c --- i 1 numdeflvs lvscal table scale factor IDs
c (ilvscID(i),i=1,numdeflvs)
c --- dp 1 numdeflvs lvscal table scale factor values
c (dlvscVal(i),i=1,numdeflvs)