Learning Forum

[SriVin]

Hi

I have created  a model of soil nailed wall. It is basically a plane strain problem. I can't solve the full model as it contains many nodes.

Can I reduce the model to a strip say a meter wide and solve it ?

Will I have same number of nodes as in original model if I reduce it to a strip ?

Thank you

[peteroznewman]

Please insert some images into your reply to better explain the wall, the soil and the direction of the strip.

[SriVin]

This is half the wall, I have used symmetry

900000 nodes have been created, it is because of fine mesh at wall soil interface

This is nails and soil, diameter of nails is 25 mm.

Thank you .

[SriVin]

Any help !!

[peteroznewman]

Are the nails line bodies? Look up MESH200 in the ANSYS Help. That allows a line body to connect with solid elements without coincident nodes.

 

[SriVin]

I have created nails as 3d bodies because I wanted to subtract the volume of nails from volume soil in which they are embedded. I couldn't subtract nails (line bodies) from soil (3D body).

Is my idea of analysing small strip of such a model correct ?

[peteroznewman]

I recommend using Line Bodies for the Nails.  That is what all the Reinforced Concrete models do.  You should look at them for guidance.

When you use line bodies, there is nothing to subtract. You connect the nail to the soil using coincident nodes and shared topology. That means slicing the soil into pieces that match the location of every nail.

You don't have to slice the soil if you figure out how to use MESH200.