Python script for Finding the center of hole

• Aug 16, 2021

• #2

FEA way

Mechanical

Nov 13, 2018

5,006

Isn’t the plug-in attached here sufficient for your purpose ?

https://www.eng-tips.com/viewthread.cfm?qid=448294

What exactly would you like to do - define reference points for multiple circular/cylindrical holes distributed unevenly in the imported geometry ? Is that a 2D or 3D model ?

 

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• Aug 16, 2021

• Thread starter
• #3

mj345

Mechanical

Jan 9, 2019

76

Thank you FEA way. My bad.
You are correct.
I want define reference points for multiple circular/cylindrical holes and its 3D model.

 

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• Aug 17, 2021

• #4

Mustaine3

Mechanical

Feb 25, 2015

1,645

My plugin in the link of FEA way does this for face regions. Is that what you are looking for?

 

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• Aug 18, 2021

• Thread starter
• #5

mj345

Mechanical

Jan 9, 2019

76

Yes Mustaine3. Thank you so much. Really appreciated.
I have one more question regarding selecting edges based on their length.
working on big assembly,want to select the edges less than the 0.25" edge length.
I am trying to find them using below python script.

import part
X=mdb.models['Model-1'].parts['Part-1'].edges.getSize()
print X

got an Name error: name 'i' is not defined.

but when I use 'i' equals to some number like 1,2,3. Its printing the length of particular numbered edge.

import part
X=mdb.models['Model-1'].parts['Part-1'].edges[1].getSize()
print X
#####
Length of edge = 18.75
#####
Could you please help me out.

Regards,

 

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• Aug 18, 2021

• #6

FEA way

Mechanical

Nov 13, 2018

5,006

You would have to loop through all edges in the model and define a condition that if edge is less than 0.25" long then it should be selected.

 

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• Aug 18, 2021

• #7

Mustaine3

Mechanical

Feb 25, 2015

1,645

Exactly. Run a for-loop over all edges and use getSize. Then you can check the value and if it fulfills a certain conditions you can do something with it (add the edge id to a list, e.g.)

 

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• Aug 31, 2021

• Thread starter
• #8

mj345

Mechanical

Jan 9, 2019

76

Thank you both for your valuable suggestions.
Started working on it and struck in the middle. Can you look into this when you get chance.

import part
all_edges=mdb.models['Model-1'].parts['Part-1'].edges
nol=len(all_edges)
for i in range(0,nol):
print all_edges[0].getSize()
###its giving all egde lengths like this
Length of edge = 0.973893722612832
0.973893722613########################
I want to include if command to select edges less than 0.55 length
if (Length of edge < 0.55):

Thanks,

 

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• Sep 1, 2021

• #9

Mustaine3

Mechanical

Feb 25, 2015

1,645

The additional printout can be suppressed. See documentation. So the only output of getSize() is the value.
Here is an example. In this case the small edges are collected in an additional list.

Code:

edgelist = mdb.models['Model-1'].parts['Part-1'].edges
smalledges = []

for i in edgelist:
	k = i.getSize(printResults=False)
	
	if k < 0.55:
		smalledges.append(i)

 

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• Sep 2, 2021

• Thread starter
• #10

mj345

Mechanical

Jan 9, 2019

76

Thank you so much.Its working well.

 

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