* fichier : q8ri_bcn.dgibi
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* TEST Q8RI BCN
*
* Verification of element Q8RI (QUA8 with 2x2 Gauss points)
*
* Elastic analysis of a square subjected to biaxial extension
*
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TITRE 'VERIFICATION OF ELEMENT Q8RI' ;
GRAPH='N';
*
*------------ Geometry definition --------------------------------
*
pa = 0. 0. ; pb = 10. 0. ; pc = 10. 10. ; pd = 0. 10 ;
lab = pa DROIT 10 pb ;lbc = pb DROIT 10 pc ;
lcd = pc DROIT 10 pd ;lda = pd DROIT 10 pa ;
mesh = DALLER lab lbc lcd lda ;
*
SI (NEG GRAPH 'N');
TRACE mesh ;
FINSI ;
*
*------------ Model and material ---------------------------------
*
*
*------------ Stiffness and boundary conditions ------------------
*
bc_tot = bc_lab ET bc_lbc ET bc_lcd ET bc_lda ;
rigtot = rig1 ET bc_tot ;
*
*------------ Prescribed displacements: dilatation ---------------
*
ftot = di_lbc ET di_lcd ;
*
*------------ Linear system --------------------------------------
*
*=================================================================
* Postprocess
*=================================================================
*
* Deformed mesh
*
SI (NEG GRAPH 'N') ;
TRACE (def0 ET def1) ;
FINSI ;
*
* Stresses computed with SIGM
*
*
* Stresses computed with EPSI and ELAS
*
*
* Gradient of displacements computed with GRAD
*
*
* Verifications
* 1) stress1 = stress2
*
*
* 2) smxx = smyy = 1.e4 , smzz = smxy = 0
*
dif = PROG dxxmin dxxmax dyymin dyymax
dzzmin dzzmax dxymin dxymax ;
FINSI ;
FIN ;
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