Step-by-Step Tutorial: Homework of Session 4


#64

Hi,
i work with PTC Creo Parametric 3.0 and i wanted to ask how can i import the STL file?
I tried to convert it with FreeCAD but it doesn’t work.
Thanks in advance


#65

@happy_gerrard …I am also having the same problem…my frontwing intersects with the diffuser. I use Solidworks 2013 . I think this problem is common to all solidworks user :confused: …don’t know how to solve it


#66

Hi, i created the mesh but i found this problem. why?
Best Regards


#67

Having issues uploading project. Had it going for 12 hours today and still nothing!


#68

@juansan995

i had the same problems. To solve this i created a new Coordinate System. To do this go to, Insert -> Reference Geometry -> Coordinate system.

As reference point I did the origin of the S4_home_work_model

Now go to save as and select .STL. Go to Options and select Do not translate STL output data to positive space. Also you need to select a Output coordinate system(see picture below)

it took me 3 days to get a good stl file but this method worked for me.

@Gianni_S

My first try had the same bad mesh. The problem by my was the "inside plate". The plate intersected the main wing. A simple Cavity solved the problem. A quick paint job:


Step-by-Step Tutorial Session 4 - Design Process
#69

i’ll try. thanks


#73

Hey!
I’m getting the job aborted possibly due to a numerical instability error on my simulation, double checked the values from HW 2 and they look ok. Can this error be related to the CAD file (invalid intersection or something)?
Link: https://www.simscale.com/workbench?publiclink=48b91b25-857e-4931-b445-0b7fe2bd4833


#74

Thanks, changing the coordinate system worked for me.


#75

I successfully got the STL file working and uploaded it, but while meshing it gave me an error saying that my geometry might be open or interfering. I was unable to find the imperfection, so here is my project link, can anyone help me finding it:
https://www.simscale.com/workbench?publiclink=5561b7de-054b-48ac-a029-68dd0e2a49c7


#77

i think the problem lays with by the center of the wing.(see picture)

you probably used a open surface in your CAD program


#78

I use NX10 and I have a problem with the script and with text editor merge. Windows don’t let me run with Powershell. I run it and appears an error message. When I try with the alternative method everything in the STL document is write with strange letters like in this image below, and I can’t merge them:


What can I do?


#79

Hey! im using solidworks as well. CAn you tell me how you brought your geomtery of wing poitioned properly ?


#80

is a floating wing alright ? do they need to be conected or intersecting? my wing is correctly positioned but i havent drawn any mounts to connect to the nose. should i proceed with the meshing with a floating wing ?


#81

yes, no problem with a floating wing, i guess


#82

okay. Thanks.


#83

were you able to split the wing elements in solidworks?


#84

Probably you saved your STL file as a Binary. You need to save it as a ACSII.

@jeettrivedi
I just did it with my own wing so it is possible. But I think it depends also on your own design.


#85

import the foil twice if you want two elements, just be careful to displace the first one before importing the second.


#86

Hello guys,

i have problems with importing the .stl model of the car to our CAD system. Our CAD system is CATIA V5. Every time i want to import the car model via insert --> existing component CATIA crashes. I also tried importing it to onshape, but it didn´t worked either.
Does anyone have the same problem or a solution for this problem?

Thanks for your help!


#87

Hi all,

I’d love to hear from people who have used SolidWorks for this exercise.
What is the workflow to get the model into SolidWorks before you generate the front wing geometry?
I can import as a STL Graphics body - which seems almost useless (cannot offset surfaces, measure from existing FSAE car geometry and so on)
If I try to import as a solid or surface body I get an error message (too many facets)
I’m using SWX2015

Is it possible to get the geometry in STEP format?

Thanks,
Nick (Australia)