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Subroutine MAP_CRYSTAL_TENSOR2

  1. Provenance of code.
  2. Purpose of code.
  3. Specification.
  4. Description of subroutine's operation.
  5. References.
  6. Parameter descriptions.
  7. Error indicators.
  8. Accuracy estimate.
  9. Any additional information.
  10. Example of code
  11. Auxiliary subroutines required.
  12. Keywords.
  13. Download source code.
  14. Links.

Provenance of Source Code

H.K.D.H. Bhadeshia,
Phase Transformations Group,
Department of Materials Science and Metallurgy,
University of Cambridge,
Cambridge, U.K.

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Purpose

Calculates the metric tensor and its inverse for a tetragonal crystal.

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Specification

Language:FORTRAN
Product form:Source code

SUBROUTINE MAP_CRYSTAL_TENSOR2(F, G, AP, CP)

REAL F(9), G(9), AP, CP

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Description

MAP_CRYSTAL_TENSOR2 calculates the metric tensor and its inverse for a tetragonal crystal structure.

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References

  1. Microstructural Characterisation of High Temperature Materials, ed. E. Metcalfe, Institute of Metals, London, 1988, (page 33, Table 3).

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Parameters

Input parameters

AP, CP - reals
AP and CP are the lattice parameters for the tetragonal crystal.

Output parameters

F - real array of dimension 9
F contains the inverse of the metric tensor.

G - real array of dimension 9
G contains the metric tensor.

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Error Indicators

None.

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Accuracy

No information supplied.

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Further Comments

None.

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Example

1. Program text

       REAL F(9), G(9), AP, CP
       INTEGER I
       READ (5,*) AP, CP
       CALL MAP_CRYSTAL_TENSOR2(F, G, AP, CP)
       WRITE (6,*) (G(I), I=1,9)
       WRITE (6,*) (F(I), I=1,9)
       STOP
       END

2. Program data

0.5   2.0

3. Program results

0.25   0.   0.   0.   0.25   0.   0.   0.   4.00

4.00   0.   0.   0.   4.00   0.   0.   0.   0.25

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Auxiliary Routines

Subroutines:
MAP_CRYSTAL_MET2

Utility Subroutines:
MAP_UTIL_INVERS

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Keywords

tetragonal, metric tensor, inverse

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Download

Download source code

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