Learning Forum

[Adeleine Cabrera]

Hi. Can anyone please help me resolve this large deformation of the beam. I have applied a 10kN load on the beam, which is designed to resist this load. Yet, the deformation is very large. I had already turned off large deflection and weak springs on settings. The fixed supports are placed on the left and right side of the beam and on the bottom and top of the column.

The geometry looks like this:

And, the non-linear stress strain curve is inserted on the APDL Command:

 

/PREP7

solid65_matid = 9996

 

MPTEMP,1,20

MPDATA,EX,solid65_matid,1,21386.9164

MPDATA,PRXY,solid65_matid,1,0.2

 

TB,MELAS,solid65_matid,1,6 

 

TBTEMP,20

TBPT,,0.0001,2.1386

TBPT,,0.0004999, 6.1884

TBPT,,0.0009995, 12.0469

TBPT,,0.0014989, 16.8393

TBPT,,0.0019980, 19.8166

TBPT,,0.0024969, 20.7518

 

 

CMSEL,S,NM_Con,ELEM

EMODIF,ALL,MAT,solid65_matid, 

 

ALLSEL,ALL 

/SOLU

 

The bilinear stress strain of the steels is on the Engineering Data. And there are no errors stopping the analysis.

 

I cannot see what the problem is.

 

I am looking forward for your help. Thank you!

[Akshay Maniyar]

Hi,

Keep large deflection ON as it will consider the stiffness change due to shape. What is the material of the beam? Make sure that the command snippet that you are using for material and Mechanical units is correct. 

Thanks,

Akshay Maniyar