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Finite Element Analysis Toolbox
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tfjactet.m File Reference

Description

TFJACTET Computes transformation Jacobian inverse and determinant for tetraheda.

[ AJTMP, AJAC ] = TFJACTET( I_FLAG, P, C, AJTMP, XI, AJAC ) Computes the inverse of the linear transformation Jacobian and corresponding determinant in point XI on tetrahedral cells. The optional input and output array AJTMP saves and reuses factors that are independent of the evaluation point.

Input       Value/(Size)           Description
-----------------------------------------------------------------------------------
i_flag      (scalar)               Evaluation flag (0=Help array, 1=All, 2=Jac.)
p           (3,n_p)                Cell vertex coordinates
c           (4,n_c)                Cell connectivities
aJTmp       (n_c,13)               Temporary help array
xi          (4)                    Barycentric cell coordinates to evaluate in
aJac        (n_c,13)               Array for Jacobian inverse and determinant
                                                                                  .
Output      Value/(Size)           Description
-----------------------------------------------------------------------------------
aJTmp       (n_c,13)               Temporary help array
aJac        (n_c,13)               Array for Jacobian inverse and determinant
See also
TFJAC, TFJACLINE, TFJACTRI, TFJACQUAD, TFJACHEX.