Importing load from Excel

Altair Forum User

Hi everyone am working in Hypermesh(Aerospace) profile, i want to import load from excel which has nodal coordinates(or Element ID) and XYZ component forces .

How to do this??

Thanks. /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />

QuyNguyenDai

@Prakash He want to IMPORT load defined in Excel file, not INTERPOLATE as you suggest. Maybe the resultant is not so different, but that's not the same.

@mano112aprmw Do you know something about TCL programming? I think you can export Excel into CSV format et write a TCL script to read & apply to your model.

Altair Forum User

@Q.Nguyen-Dai My mistake.

 

@mano112aprmw

One way is to have forces/moments in the form of .dat file which you can directly import in OptiStruct profile (.dat format is shown in image)

Here is a script to Create force on nodes using box selection. The Force and the box coordinates are defined in an external csv-file and force magnitude is divided to number of nodes that fall under this box.

<?xml version="1.0" encoding="UTF-8"?>

<?xml version="1.0" encoding="UTF-8"?>

Altair Forum User

You can download the script from Script Exchange https://connect.altair.com/CP/kb-search.html 

tinh

Hi,

I have an ideal.

Thinking that excel is also very powerful to process data,

you can use its formulas to generate a *.fem file then import to hypermesh

example with node coordinates and force components,

I will generate GRID data, CONM2 (mass elems) at those grids, and FORCE on them,

after import to your model,

you can easily to use panel tool>equivalence to stick CONM2 to your nodes, then delete CONM2:

<?xml version="1.0" encoding="UTF-8"?>

 

sample excel:

 

 

Unable to find an attachment - read this blog

QuyNguyenDai

Yeah, for 'small' & 'average' analysis, that's ok.

But for 'big' (>1.E+6 nodes), maybe you hit Excel limitation /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />

tinh

Altair Forum User said:

Yeah, for 'small' & 'average' analysis, that's ok.

But for 'big' (>1.E+6 nodes), maybe you hit Excel limitation /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />

 

/emoticons/default_biggrin.png' srcset='/emoticons/biggrin@2x.png 2x' title=':D' width='20' /> it's high probability with him - students often like to do big one

Altair Forum User

Altair Forum User said:

@Q.Nguyen-Dai My mistake.

 

@mano112aprmw

One way is to have forces/moments in the form of .dat file which you can directly import in OptiStruct profile (.dat format is shown in image)

Here is a script to Create force on nodes using box selection. The Force and the box coordinates are defined in an external csv-file and force magnitude is divided to number of nodes that fall under this box.

 

<?xml version="1.0" encoding="UTF-8"?>

 

 

@Prakash Pagadala, how can I import the .dat file?

Altair Forum User

Hi @Johannes

 

You can import .dat file in OptiStruct/Nastran profile in HyperMesh.

 

Goto Import>>Solver Deck>> Change file type to All file formats>> Select the .dat file>> Import. 

Altair Forum User

Altair Forum User said:

Hi,

I have an ideal.

Thinking that excel is also very powerful to process data,

you can use its formulas to generate a *.fem file then import to hypermesh

example with node coordinates and force components,

I will generate GRID data, CONM2 (mass elems) at those grids, and FORCE on them,

after import to your model,

you can easily to use panel tool>equivalence to stick CONM2 to your nodes, then delete CONM2:

<?xml version="1.0" encoding="UTF-8"?>

 

sample excel:

 

 

Hi @tinh,

 

How would this Excel to FEM model be adjusted if you want to use it to create only pressures at x_node, y_node, z_node instead of Force components? 

 

Cheers

Unable to find an attachment - read this blog

tinh

Hi,

Pressures must be define on elements, not at x, y, z coordinates.

Please describe your problem in detail