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Hi everyone, i would like to know if there is any tcl that extracts the midline of all displayed thickened pipes comps. If not, is there way we can create a tcl to extract midline for all the displayed hollow thickened pipes..

 

Thank you in advance

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hi nyuyen , i mean midline of a solid cylinder with some diameter (lets say 100mm). Pls Imagine there are some, 50 cylinders of such kind or say wires ( unattached to each other) and i want to extract midline for all of them at once using a tcl..... unfortunately i dont have the model so couldnt attach.. i am however attaching an image for ur understanding

 

thanks in advance 

download.jpg

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Hello everyone, I'm retriving this topic again in order to see if someone could help me.

 

I have a 3D model (tubular structure) I want to mesh with 1D CBAR elements.

 

Anyone please know a quick way to get the midline of the 3D model tubes?

 

Thanks in advance.

 

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Hi tinh,

Thank you for your attention to this matter.

I'm not really seeing your point.

I have a strucutre like this and i need to extract all midlines (in blue) in between.

Could you please be more clear?

Thanks

 

 

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Ok I got it, thank you so much Q.Nguyen-Dai and tinh.

 

But know I have another question, because I have a big structure I do not want to do all the process by hand ( that would be very time consuming)

 

Is there a TCL scripting code to that automatically? I mean just selection all teh tubular structure at once and give me all the midlines?

 

Thank you for your kind support.

 

 

 

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A such script is not yet found.

If you find it or write it, pls share us.

I think it is rarely used so nobody write.

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Attached the sample picture of geometry.  I want to write a code to extract the midline of the tube and calculate thickness. greatly appreciate of anyone can help me

image1.jpg

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Ya. I know CAD software can do it on fly. but I need to extract in Hypermesh.  Its the first step in my analysis and I always gets CAD without midlines. 

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I tried writing TCL code for this by sequentially selecting outer parallel lines and finding midlines and joining all of them. But I need more robust code

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On 10/7/2019 at 9:54 PM, avadutala said:

I tried writing TCL code for this by sequentially selecting outer parallel lines and finding midlines and joining all of them. But I need more robust code

That's problem if the 2 lines are not slice the sequence in 2 equal parts.

 

To specify mid line, i suggest you to extract parametric uv lines of each outer surface. In simple case you will get u or v as arcs, find arc centers and connect them you will get mid lines

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