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Posted by 오늘보다 나은 내일
카테고리 없음2013. 12. 31. 11:10

Command List

NSEL(N) Status of node N: -1=unselected, 0=undefined, 1=selected.
ESEL(E) Status of element E: -1=unselected, 0=undefined, 1=selected.
KSEL(K) Status of keypoint K: -1=unselected, 0=undefined, 1=selected.
LSEL(L) Status of line L: -1=unselected, 0=undefined, 1=selected.
ASEL(A) Status of area A: -1=unselected, 0=undefined, 1=selected.
VSEL(V) Status of volume V: -1=unselected, 0=undefined, 1=selected.
# Next Selected Entity
NDNEXT(N) Next selected node having a node number greater than N.
ELNEXT(E) Next selected element having an element number greater than E.
KPNEXT(K) Next selected keypoint having a keypoint number greater than K.
LSNEXT(L) Next selected line having a line number greater than L.
ARNEXT(A) Next selected area having an area number greater than A.
VLNEXT(V) Next selected volume having a volume number greater than V.
# Locations
CENTRX(E) Centroid X-coordinate of element E in global Cartesian coordinate system. Centroid is determined from the selected nodes on the element.
CENTRY(E) Centroid Y-coordinate of element E in global Cartesian coordinate system. Centroid is determined from the selected nodes on the element.
CENTRZ(E) Centroid Z-coordinate of element E in global Cartesian coordinate system. Centroid is determined from the selected nodes on the element.
NX(N) X-coordinate of node N in the active coordinate system.
NY(N) Y-coordinate of node N in the active coordinate system.
NZ(N) Z-coordinate of node N in the active coordinate system.
KX(K) X-coordinate of keypoint K in the active coordinate system
KY(K) Y-coordinate of keypoint K in the active coordinate system
KZ(K) Z-coordinate of keypoint K in the active coordinate system
LX(L,LFRAC) X-coordinate of line L at length fraction LFRAC (0.0 to 1.0).
LY(L,LFRAC) Y-coordinate of line L at length fraction LFRAC (0.0 to 1.0).
LZ(L,LFRAC) Z-coordinate of line L at length fraction LFRAC (0.0 to 1.0).
LSX(L,LFRAC) X slope of line L at length fraction LFRAC (0.0 to 1.0).
LSY(L,LFRAC) Y slope of line L at length fraction LFRAC (0.0 to 1.0).
LSZ(L,LFRAC) Z slope of line L at length fraction LFRAC (0.0 to 1.0).
# Nearest to Location
NODE(X,Y,Z) Number of the selected node nearest the X,Y,Z point (in the active coordinate system, lowest number for coincident nodes).
KP(X,Y,Z) Number of the selected keypoint nearest the X,Y,Z point (in the active coordinate system, lowest number for coincident nodes).
# Distances
DISTND(N1,N2) Distance between nodes N1 and N2.
DISTKP(K1,K2) Distance between keypoints K1 and K2.
DISTEN(E,N) Distance between the centroid of element E and node N. Centroid is determined from the selected nodes on the element.
# Angles (in radians by default -- see the *AFUN command)
ANGLEN(N1,N2,N3) Subtended angle between two lines (defined by three nodes where N1 is the vertex node). Default is in radians.
ANGLEK(K1,K2,K3) Subtended angle between two lines (defined by three keypoints where K1 is the vertex keypoint). Default is in radians.
# Nearest to Entity
NNEAR(N) Selected node nearest node N.
KNEAR(K) Selected keypoint nearest keypoint K.
ENEARN(N) Selected element nearest node N. The element position is calculated from the selected nodes.
# Areas
AREAND(N1,N2,N3) Area of the triangle with vertices at nodes N1, N2, and N3.
AREAKP(K1,K2,K3) Area of the triangle with vertices at keypoints K1, K2, and K3.
ARNODE(N) Area at node N apportioned from selected elements attached to node N. For 2-D planar solids, returns edge area associated with the node. For axisymmetric solids, returns edge surface area associated with the node. For 3-D volumetric solids, returns face area associated with the node. For 3?D, select all the nodes of the surface of interest before using ARNODE.
# Normals
NORMNX(N1,N2,N3) X-direction cosine of the normal to the plane containing nodes N1, N2, and N3.
NORMNY(N1,N2,N3) Y-direction cosine of the normal to the plane containing nodes N1, N2, and N3.
NORMNZ(N1,N2,N3) Z-direction cosine of the normal to the plane containing nodes N1, N2, and N3.
NORMKX(K1,K2,K3) X-direction cosine of the normal to the plane containing keypoints K1, K2, and K3.
NORMKY(K1,K2,K3) Y-direction cosine of the normal to the plane containing keypoints K1, K2, and K3.
NORMKZ(K1,K2,K3) Z-direction cosine of the normal to the plane containing keypoints K1, K2, and K3.
# Connectivity
ENEXTN(N,LOC) Element connected to node N. LOC is the position in the resulting list when many elements share the node. A zero is returned at the end of the list.
NELEM(E,NPOS) Node number in position NPOS (1--20) of element E.
NODEDOF(N) Returns the bit pattern for the active DOFs at the specified node.bit 0 is UX, bit 1 is UY,... bit 5 is ROTZ bits 6,7,8 are AX,AY,AZ bits 9,10,11 are VX,VY,VZ bit 18 is PRES, bit 19 is TEMP, bit 20 is VOLT, bit 21 is MAG bit 24 is EMF, bit 25 is CURR For a node with UX,UY,UZ the return value will be 7 (bits 0,1,2) For a node with UX,UY,UZ,ROTX,ROTY,ROTZ the return value will be 63 (bits 0,1,2,3,4,5)
# Faces
ELADJ(E,FACE) For 2-D planar solids and 3-D volumetric solids, element adjacent to a face (FACE) of element E. The face number is the same as the surface load key number. Only elements of the same dimensionality and shape are considered. A -1 is returned if more than one is adjacent.
NDFACE(E,FACE,LOC) Node in position LOC of a face number FACE of element E. The face number is the same as the surface load key number. LOC is the nodal position on the face (for an IJLK face, LOC=1 is at node I, 2 is at node J, etc.)
NMFACE(E) Face number of element E containing the selected nodes. The face number output is the surface load key. If multiple load keys occur on a face (such as for line and area elements) the lowest load key for that face is output.
ARFACE(E) For 2-D planar solids and 3-D volumetric solids, returns the area of the face of element E containing the selected nodes. For axisymmetric elements, the area is the full (360 degree) area.
# Degree of Freedom Results
UX(N) UX structural displacement at node N.
UY(N) UY structural displacement at node N.
UZ(N) UZ structural displacement at node N.
ROTX(N) ROTX structural rotation at node N.
ROTY(N) ROTY structural rotation at node N.
ROTZ(N) ROTZ structural rotation at node N.
TEMP(N) Temperature at node N. For SHELL131 and SHELL132 elements with KEYOPT(3) = 0 or 1, use TBOT(N), TE2(N), TE3(N), . . ., TTOP(N) instead of TEMP(N).
PRES(N) Pressure at node N.
VX(N) VX fluid velocity at node N.
VY(N) VY fluid velocity at node N.
VZ(N) VZ fluid velocity at node N.
ENKE(N) Turbulent kinetic energy (FLOTRAN) at node N.
ENDS(N) Turbulent energy dissipation (FLOTRAN) at node N.
VOLT(N) Electric potential at node N.
MAG(N) Magnetic scalar potential at node N.
AX(N) AX magnetic vector potential at node N.
AY(N) AY magnetic vector potential at node N.
AZ(N) AZ magnetic vector potential at node N.
# Returns information about the data base manager
VIRTINQR(1) Number of pages in core.
VIRTINQR(4) Page size in integer words.
VIRTINQR(7) Maximum number of pages allowed on disk.
VIRTINQR(8) Number of read/write operations on page.
VIRTINQR(9) Maximum record number on page.
VIRTINQR(11) Maximum pages touched.
# Returns the current value of ANSYS filtering keywords.
KWGET(KEYWORD) Returns the current value the keyword specified by KEYWORD. See the ANSYS UIDL Programmer's Guide for a list of keywords and values.
# Character String Functions Strings must be dimensioned (see *DIM) as a character parameter or enclosed in single apostrophes ('char').
# Functions which return a double precision value of a numeric character string.
VALCHR(a8) a8 is a decimal value expressed in a string.
VALOCT (a8) a8 is an octal value expressed in a string.
VALHEX(a8) a8 is a hex value expressed in a string.
# Functions which return an 8 character string of a numeric value.
CHRVAL (dp) dp is a double precision variable.
CHROCT (dp) dp is an integer value.
CHRHEX(dp) dp is an integer value.
# Functions which manipulate strings: StrOut is the output string (or character parameter) Str1 and Str2 are input strings. Strings are a maximum of 128 characters. (see *DIM) StrOut = STRSUB(Str1, nLoc,nChar) Get the nChar substring starting at character nLoc in Str1. StrOut = STRCAT(Str1,Str2) Add Str2 at the end of Str1.
STRFILL(Str1,Str2,nLoc) StrOut = STRFILL(Str1,Str2,nLoc) Add Str2 to Str1 starting at character nLoc.
STRCOMP(Str1) StrOut = STRCOMP(Str1) Remove all blanks from Str1
STRCOMP(Str1) Left-justify Str1
STRPOS(Str1,Str2) nLoc = STRPOS(Str1,Str2) Get starting location of Str2 in Str1.
STRLENG(Str1) nLoc = STRLENG(Str1) Location of last nonblank character
UPCASE(Str1) StrOut = UPCASE(Str1) Upper case of Str1
LWCASE(Str1) StrOut = LWCASE(Str1) Lower case of Str1
# The following functions manipulate file names.
JOIN ('directory','filename','extension') Path String = JOIN ('directory','filename','extension') Produces a contiguous pathstring. e.g. directory/filename.ext
JOIN ('directory','filename') Path String = JOIN ('directory','filename') Produces a contiguous pathstring. e.g. directory/filename
SPLIT('PathString', 'DIR') Produces a separate output of the directory from the pathstring.
SPLIT('PathString', 'FILE') Produces a separate output of the complete filename (with extension) from the pathstring.
SPLIT('PathString', 'NAME') Produces a separate output of the filename from the pathstring.
SPLIT('PathString', 'EXT') Produces a separate output of the file extension from the pathstring.


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Posted by 오늘보다 나은 내일
카테고리 없음2013. 12. 31. 10:20

Calculate Average Temperature

Using a Commands Object for Average Value on a Face

In order for a Workbench Mechanical Commands Object to find a portion of a model that is of interest to a user, a Named Selection can be used since it is turned into a Component in the ANSYS APDL analysis. In the following macro, the Named Selection “Temp_Here” (not case sensitive) is used to indicate the nodes on one or more faces that are to be used to form an average. The named selection must exist and represent a set of faces on Bodies in the user's Workbench Mechanical thermal model.

Arguments can be passed to a Commands Object in its Input details. The macro is written to accept three Input arguments to indicate Load Step, Substep, or Time for the result to be formed. If the Input arguments are all blank, then SET,LAST is used to read the final result. The arguments are:

ARG1 is the Load Step number

  1. ARG2 is the Substep number
  2. ARG3 is the Time of interest

The macro is written to apply the following logic to loading a result:

  • If ARG1 and ARG3 are zero, the SET,LAST command is used to get the result at the end of the analysis results file.
  • If ARG1 is nonzero, then ARG3 for time will be ignored.
  • If ARG1 is nonzero and ARG2 is zero, the SET command  reads the last substep of the Load Step number in ARG1.

The Commands Object creates three Output parameters that report:

  1. Average temperature value calculated
  2. Time of the result that was loaded by the SET command as a result of the Input arguments
  3. The result of an error check on the Named Selection, where “1” means OK


! Calculate Average Temperature on Face(s) in Named Selection "Temp_Here"
! Report average as parameter "my_temp_avg" in Details>Results
!
! The ARNODE function returns the area on solid element faces associated with
! a node on the surface. All nodes on the surface must be selected, so if we
! select only nodes on a surface of interest, only the element faces on that
! surface will contribute to the area estimate.
!
! ARG1=load step desired
! ARG2=substep desired, if blank, last substep of ARG1 load step is loaded
! ARG3=time desired, used only if ARG1=0
!
fini
/post1
!
*if,ARG1,eq,0,then
   *if,ARG3,eq,0,then
      set,LAST                       ! if nothing specified, use final value
      *MSG,WARN
      No Load Step or Time was provided to temperature average macro. %/&
      SET,LAST will be used for final Load Step. See my_time Output in Details.
   *else
      set,,,,,ARG3                   ! if ARG1=0 and ARG3<>0 use ARG3 time
   *endif
*else
   set,ARG1,ARG2
*endif
*get,my_time,ACTIVE,,SET,TIME        ! time of result in database
!
*get,comptype,COMP,Temp_Here,TYPE    ! what type of component
*if,comptype,ne,1,then               ! is it a node component
   my_comp_test=0
   allsel
   set,last
   *MSG,ERROR
   Named Selection "Temp_Here" must be created on face(s) of interest.
   /EOF
   *return,-1
*endif
!
cmsel,s,Temp_Here                    ! select nodes on face(s)
my_comp_test=1
!
*stat
*get,n_nodes,node,,count             ! how many nodes in component
*dim,node_arnode,array,n_nodes       ! associated elements surface area each node
*dim,node_t_a,array,n_nodes          ! product of temperature*area at each node
node_next=0
*do,ii,1,n_nodes
   node_next=NDNEXT(node_next)       ! work through all the nodes
   node_arnode(ii)=ARNODE(node_next) ! associated area on element faces
   node_t_a(ii)=ARNODE(node_next)*TEMP(node_next)   ! product
*enddo
*vscfun,sum_node_t_a,SUM,node_t_a(1) ! sum of temperature*area products
*vscfun,sum_area,SUM,node_arnode(1)  ! sum of areas
!
my_temp_avg=sum_node_t_a/sum_area    ! the average temperature on the surface
                                     ! my_temp_avg is reported in Results
allsel
set,last
!




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