Hi
I’m modelling a tunnel in a trench, where I want the soil moving with the tunnel in compression, but not in tension. I’m trying to do this using SLNS REFT >SPT
, but I can’t get the connection to work uniaxially. Is there any way of doing this?
I have made this example model to show the concept:
+prog aqua urs:35.1
UNIT 6
head Materials
MAT 1 E 35000
SREC 1 H 100 B 100 MNO 1
END
+prog sofimshc urs:35.2
head Geometry
SYST 2D GDIV 200000 GDIR NEGY
CTRL MESH 1
UNIT 6
let#X 0,100,1100,1200
loop#i X
SPT 11+#i*10 X #X(#i) Y 0
SPT 12+#i*10 X #X(#i) Y -1000
endloop
SLN 11 21 31 SNO 1
SLN 21 11 12 SNO 1 ; SLNS REFT >SPT 21 FIX F
SLN 22 41 42 SNO 1 ; SLNS REFT >SPT 31 FIX F
SLN 12 12 42 SNO 1 ; SLNS fix PP
END
+prog sofiload urs:35.3
head Load
LC 1 TYPE 'NONE'
BEAM SLN 11 TYPE PX PA 1
END
+prog ase urs:35.4
head Analysis
LC 1
END
In this case, I’d like the connection between SLN 21 and SPT 31 to be inactive.
I have tried creating an interface in PROG AQUA
with CRAC 0
, and added to the SLNS
in SOFIMSHC
but as interfaces has to be connected via edges, this doesn’t help me either.
aqua:
MAT 2 E 35000
BMAT 2 MREF 1 CRAC 0.0
sofimshc:
SLN 21 11 12 SNO 1 ; SLNS REFT >SPT 21 MNO 2 TYPE INTF
SLN 22 41 42 SNO 1 ; SLNS REFT >SPT 21 MNO 2 TYPE INTF
Kind regards
Martin