Hello,

I am trying to use EREINF command to embed my reinforcement in my solid concrete elements. I am currently not modeling any non-linearity.

When viewing results from a simple analysis there are erroneous graphs that make me doubt that the EREINF command is working properly. The reinforcements that are aligned in Z direction are showing bulging with large deformations which is very strange. I have 8 sets of reinforcement defined. 3 of them are in Z direction, all have similar erroneous results. The rest of them look fine.

All my solid elements are quad and I did not change any of them. The loading is displacement control in Y direction upwards.

I would be grateful if someone could take a look at my code and help me. I use version 2019 R1 Academic.

Thanks,

Attached are deformations from two sets of reinforcement (deckl and deckt) in my model.

This is the APDL code I used:

FINI

/PREP7

*SET,MAT_ID,2002 !STEEL REBAR MATERIAL

DENS_=7850.0

EX_=2.1E+5

NUXY_=0.3

MP,DENS,MAT_ID,DENS_,

MP,EX,MAT_ID,EX_,

MP,NUXY,MAT_ID,NUXY_,

AREA_3=71 ! #3

AREA_4=129 ! #4

AREA_5=200 ! #5

*SET,NEWSEC3,3003

SECTYPE,NEWSEC3,REINF,DISCRETE,n3

SECDATA,MAT_ID,AREA_3,MESH

*SET,NEWSEC4,3004

SECTYPE,NEWSEC4,REINF,DISCRETE,n4

SECDATA,MAT_ID,AREA_4,MESH

*SET,NEWSEC5,3005

SECTYPE,NEWSEC5,REINF,DISCRETE,n3

SECDATA,MAT_ID,AREA_5,MESH

*SET,NEWTYPE,1002

ET,NEWTYPE,200,2

CMSEL,S,NS_DECKL,ELEM !! DECKL

EMODIF,ALL,TYPE,NEWTYPE

EMODIF,ALL,SECNUM,NEWSEC4

CMSEL,A,NS_CONC,ELEM

EREINF

ESEL,S,ENAME,,264 !!

CM,CM_DECKL,ELEM

CMSEL,S,NS_DECKT,ELEM !! DECKT

EMODIF,ALL,TYPE,NEWTYPE

EMODIF,ALL,SECNUM,NEWSEC4

CMSEL,A,NS_CONC,ELEM

EREINF

ESEL,S,ENAME,,264 !!

CMSEL,U,CM_DECKL,ELEM

CM,CM_DECKT,ELEM

!!Here is the rest of the definition of reinforcement similar to the two above I removed for this post.

!....

ESEL,S,ENAME,,200

EDEL,ALL

ALLSEL,ALL

FINI

/SOLU