Failure combining solids due to overlapping edges

Failure combining solids due to overlapping edges

Anonymous
Not applicable
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Message 1 of 5

Failure combining solids due to overlapping edges

Anonymous
Not applicable

Hello,

 

I have been working on a project where I have been attempting to fix a library of models of boat hulls to make them "water-tight" for use in CFD. Unfortunately many of the models I am working with are, for lack of a better word, broken. There are a lot of complicated geometries involved created from various lofts and extrudes, and as a result, some of the solids aren't playing well with most of the 3D modeling commands or derive based functions. Many of the commands give me an error such as failed Booleans, and failure to produce meaningful results.

 

 

After a lot of confusion, I exported solids individually to STL files, and used the STL check function in 3DS max. As it turns out a lot adjacent faces have overlapping edges, creating a multiple or open edge condition.

 

I've had some success in converting the solids into surface bodies, and replacing the problem faces with free form faces and creating matched edge conditions (The multiple edge condition makes the patch command a nightmare). However, as I said, there is a lot of complex geometry on the outside of these hulls, and the free form approach isn't 100 % faithful to the original design.

 

I was wondering if there was any tool in Inventor that can diagnose and check solid bodies and identify problem geometry, and also if anyone has come across a similar problem and has a good fix.

 

 

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Message 2 of 5

JDMather
Consultant
Consultant

@Anonymous wrote:

1.... I exported solids individually to STL files, ...

 

2.  I was wondering if there was any tool in Inventor that can diagnose and check solid bodies and identify problem geometry, .... 

 


1. Big mistake - stl are useless in most cases.

 

2. Yes - Construction Environment and Repair Environment.  (expert level experience)

 

Can you attach your file here?


-----------------------------------------------------------------------------------------
Autodesk Inventor 2019 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional


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Message 3 of 5

Anonymous
Not applicable

Unfortunately no, my employers will not allow me to post the file.

 

The only reason I was creating STL files was to use 3DS max to identify the location of the problem geometry so that I could identify the edges that needed fixing, and then continued to try and fix them in the .ipt file.

 

Also maybe this is a simple solution, but I don't see a construction environment or repair environment.

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Message 4 of 5

blair
Mentor
Mentor

Look at Mesh Mixer:

 

 http://www.meshmixer.com/


Inventor 2020, In-Cad, Simulation Mechanical

Just insert the picture rather than attaching it as a file
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Message 5 of 5

JDMather
Consultant
Consultant

I have never heard of using 3DS Max as a tool for examining the quality of Inventor geometry (Inventor has the necessary tools built in).

 

The Construction Environment is hidden and must be enabled.  (Application Options)

The Repair Environment can only be entered in certain ways.

 

Construction Environment.png


-----------------------------------------------------------------------------------------
Autodesk Inventor 2019 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional


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