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116 lines
3.7 KiB
116 lines
3.7 KiB
2 years ago
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C Copyright(C) 1999-2020 National Technology & Engineering Solutions
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C of Sandia, LLC (NTESS). Under the terms of Contract DE-NA0003525 with
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C NTESS, the U.S. Government retains certain rights in this software.
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C
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C See packages/seacas/LICENSE for details
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C=======================================================================
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SUBROUTINE MAKD2B (LENF, NLNKF, LINKF, IELBST,
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& IF2EL, IF2EL2, IE2ELB, IDN2B)
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C=======================================================================
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C --*** MAKD2B *** (MESH) Create dead node to element block index
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C -- Written by Amy Gilkey - revised 03/09/88
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C --
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C --MAKD2B finds the element block to be associated with each dead node.
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C --A dead node is a node which is in a dead surface face (if 3D),
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C --but not in any alive faces. Only selected element blocks are
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C --included in the calculation.
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C --
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C --Parameters:
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C -- LENF - IN - the cumulative face counts by element block
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C -- NLNKF - IN - the number of nodes per face
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C -- LINKF - IN - the connectivity for all faces
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C -- IELBST - IN - the element block status (>0 if selected)
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C -- IF2EL - IN - the element number of each face
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C -- IF2EL2 - IN - the secondary element number of each face
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C -- IE2ELB - IN - the element block for each element
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C -- IDN2B - OUT - the element block for each dead node; dead if >= 0
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C --
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C --Common Variables:
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C -- Uses NDIM, NELBLK of /DBNUMS/
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C -- Uses IS3DIM, NUMNPF of /D3NUMS/
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include 'dbnums.blk'
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COMMON /D3NUMS/ IS3DIM, NNPSUR, NUMNPF, LLNSET
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LOGICAL IS3DIM
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INTEGER LENF(0:NELBLK+2)
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INTEGER NLNKF(NELBLK)
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INTEGER LINKF(*)
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INTEGER IELBST(NELBLK)
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INTEGER IF2EL(*), IF2EL2(*)
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INTEGER IE2ELB(NUMEL)
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INTEGER IDN2B(NUMNPF)
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C --Mark all nodes with -999
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CALL INIINT (NUMNPF, -999, IDN2B)
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C --Calculate starting link index for dead faces
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IELB = NELBLK+1
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IXL0 = IDBLNK (IELB, 0, LENF, NLNKF) - 1
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DO 100 IFAC = LENF(IELB-1)+1, LENF(IELB)
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IB = IE2ELB(IF2EL(IFAC))
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IXL0 = IXL0 + NLNKF(IB)
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100 CONTINUE
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IELB = NELBLK+2
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IF (.NOT. IS3DIM) THEN
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C --Mark nodes in dead faces if not in any alive faces
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DO 120 IFAC = LENF(IELB-1)+1, LENF(IELB)
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IB = IE2ELB(IF2EL(IFAC))
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IF (IELBST(IB) .GT. 0) THEN
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DO 110 K = 1, NLNKF(IB)
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INP = LINKF(IXL0+K)
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IF (IDN2B(INP) .LT. 0) THEN
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IDN2B(INP) = IB
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ELSE IF (IDN2B(INP) .NE. IB) THEN
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IDN2B(INP) = 0
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END IF
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110 CONTINUE
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END IF
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IXL0 = IXL0 + NLNKF(IB)
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120 CONTINUE
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ELSE
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C --Mark nodes in dead surface faces if not in any alive faces
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DO 140 IFAC = LENF(IELB-1)+1, LENF(IELB)
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IB = IE2ELB(IF2EL(IFAC))
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IF (IELBST(IB) .GT. 0) THEN
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IF (IF2EL2(IFAC) .LE. 0) THEN
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DO 130 K = 1, NLNKF(IB)
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INP = LINKF(IXL0+K)
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IF (IDN2B(INP) .LT. 0) THEN
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IDN2B(INP) = IB
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ELSE IF (IDN2B(INP) .NE. IB) THEN
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IDN2B(INP) = 0
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END IF
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130 CONTINUE
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END IF
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END IF
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IXL0 = IXL0 + NLNKF(IB)
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140 CONTINUE
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END IF
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C --Mark alive nodes (any element block) with -999
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DO 170 IELB = 1, NELBLK
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IXL0 = IDBLNK (IELB, 0, LENF, NLNKF) - 1
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DO 160 IFAC = LENF(IELB-1)+1, LENF(IELB)
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DO 150 K = 1, NLNKF(IELB)
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INP = LINKF(IXL0+K)
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IDN2B(INP) = -999
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150 CONTINUE
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IXL0 = IXL0 + NLNKF(IELB)
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160 CONTINUE
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170 CONTINUE
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RETURN
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END
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