Example of Mohr Coulomb Soil Stability not working

4

thnx a lot,
i have fixed all issues
i get it worked with CPE6 elements:

grafik
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MCSS

Mohr Coulomb Soil Stability

MCSS.fbd

pnt ! 0 0 0
pnt ! 10 0 0
pnt ! 30 0 0
pnt ! 40 0 0
pnt ! 40 15 0
pnt ! 30 15 0
pnt ! 10 5 0
pnt ! 0 5 0
pnt ! 30 5 0

line ! D001 D002 110
line ! D002 D007 105
line ! D007 D008 110
line ! D008 D001 105

line ! D002 D003 120
line ! D003 D009 105
line ! D009 D007 120
line ! D007 D002 105

line ! D003 D004 110
line ! D004 D005 115
line ! D005 D006 110
line ! D006 D009 110

line ! D006 D007 122

GSUR A001 + BLEND + L001 + L002 + L003 + L004
GSUR A002 + BLEND + L005 + L006 + L007 + L002
GSUR A003 + BLEND + L009 + L00A + L00B + L00C + L006
GSUR A004 + BLEND + L007 + L00C + L00D

div all mult 2

elty all tr6u
mesh all

elty all tr6e

seta nodes n all

enq nodes fix_side rec 0 _ _ 0.1
enq nodes fix_side rec 40 _ _ 0.1

enq nodes fix_bottom rec _ 0_ 0.1

plot n fix_side b
plus n fix_bottom y
plus e all
view elem

prnt se

send all abq
send fix_side abq nam
send fix_bottom abq nam

MCSS.inp

*HEADING
Model: MCSS

*INCLUDE, INPUT=all.msh
*INCLUDE, INPUT=fix_bottom.nam
*INCLUDE, INPUT=fix_side.nam

**** YOUNG’S Modulus E 20000.0 [kN/m²]
**** Poisson’s ratio nu 0.26 [-]
**** Cohesion c 13.5 [kN/m²]

*MATERIAL,NAME=MC

*ELASTIC
2e4,0.26

*MOHR COULOMB
15.8,15.8

** Friction angle f in degrees 15.80
** Dilation angle ? in degrees 15.80

*MOHR COULOMB HARDENING
13.5,1

** Cohesion yield stress c
** Equivalent plastic strain.

*SOLID SECTION,ELSET=Eall,MATERIAL=MC

*DENSITY
3.5

*STEP, NLGEOM, INC=200

*STATIC, SOLVER=SPOOLES
0.01,1

*BOUNDARY
Nfix_side,1,1,0
Nfix_bottom,1,2,0

*DLOAD
Eall,GRAV,9.810,0.0000,-1.0000,0.0000

*NODE FILE
U
RF
*EL FILE
S
*END STEP