XKR Super G... Going for Mach 1
01-27-2010, 07:51 AM
#2423
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Hi Crom,
I have a rough design for the entire underbody, along with a few rear bumper/diffuser concepts. If you remember, none of the 3D G35 models we downloaded from the various Internet resources would properly import into either of the 3D modelling programs I tried. I ended up purchasing Alibre. I figure I can work on it here and there. But as you will appreciate, it is going to take alot of time, especially considering all of my CAD experience is in 2D. So in addition to the normal time it would take, tack onto that the learning curve for Alibre. Finally, there is not much I can do on the model without having my car there to take measurements as I need them. I'll get started on the model after I get my car back.
The other alternative is to just go ahead and give the design to a fabricator and have him make it and install it on Mike's car, and then test it in a wind tunnel. Mike and I discussed doing that, but that is up to him.
I have a rough design for the entire underbody, along with a few rear bumper/diffuser concepts. If you remember, none of the 3D G35 models we downloaded from the various Internet resources would properly import into either of the 3D modelling programs I tried. I ended up purchasing Alibre. I figure I can work on it here and there. But as you will appreciate, it is going to take alot of time, especially considering all of my CAD experience is in 2D. So in addition to the normal time it would take, tack onto that the learning curve for Alibre. Finally, there is not much I can do on the model without having my car there to take measurements as I need them. I'll get started on the model after I get my car back.
The other alternative is to just go ahead and give the design to a fabricator and have him make it and install it on Mike's car, and then test it in a wind tunnel. Mike and I discussed doing that, but that is up to him.
Last edited by XKR; 01-27-2010 at 07:53 AM.
01-27-2010, 11:09 AM
#2427
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Hi Crom,
I have a rough design for the entire underbody, along with a few rear bumper/diffuser concepts. If you remember, none of the 3D G35 models we downloaded from the various Internet resources would properly import into either of the 3D modelling programs I tried. I ended up purchasing Alibre. I figure I can work on it here and there. But as you will appreciate, it is going to take alot of time, especially considering all of my CAD experience is in 2D. So in addition to the normal time it would take, tack onto that the learning curve for Alibre. Finally, there is not much I can do on the model without having my car there to take measurements as I need them. I'll get started on the model after I get my car back.
The other alternative is to just go ahead and give the design to a fabricator and have him make it and install it on Mike's car, and then test it in a wind tunnel. Mike and I discussed doing that, but that is up to him.
I have a rough design for the entire underbody, along with a few rear bumper/diffuser concepts. If you remember, none of the 3D G35 models we downloaded from the various Internet resources would properly import into either of the 3D modelling programs I tried. I ended up purchasing Alibre. I figure I can work on it here and there. But as you will appreciate, it is going to take alot of time, especially considering all of my CAD experience is in 2D. So in addition to the normal time it would take, tack onto that the learning curve for Alibre. Finally, there is not much I can do on the model without having my car there to take measurements as I need them. I'll get started on the model after I get my car back.
The other alternative is to just go ahead and give the design to a fabricator and have him make it and install it on Mike's car, and then test it in a wind tunnel. Mike and I discussed doing that, but that is up to him.
01-28-2010, 06:59 AM
#2430
One of the websites had an option to convert the files into a number of different file formats, so I did so and tried to import each of these into both Alibre and SpaceClaim (engineering level 3D modeling software), hoping I would be able to then convert them into a STEP file that would work with Symscape. However, none of these files would even properly import into Alibre or SpaceClaim.
If you have 3D studio max and would like to see if any of these files will import into that, PM me your e-mail address and I will send them to you. It would be great if you could get them to import and then export them into a STEP file I can work with.
01-28-2010, 07:11 AM
#2431
Thank you, Danny. I just e-mailed the files to you. If you can get one of them to convert to a STEP file that will properly import into Alibre, that would be great!!! Once I have it in Alibre, I can add the underbody components onto it, re-export it, then give Symscape a try.
01-28-2010, 07:12 AM
#2432
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I think Catia can open .stp files.
I can try to see if they have catia on campus and try to import/export for you.
I'd do it at work but that's against the rules
I can try to see if they have catia on campus and try to import/export for you.
I'd do it at work but that's against the rules
01-29-2010, 03:13 PM
#2435
When I try to import the files that I have into Alibre, the “points” menu item in the side tool bar is crossed out, which may indicate that the original designer did not precisely connect the points, but merely eye-balled it. What we need is a precise model of the G35 that is compatible with 3D engineering programs and, in particular, Alibre since that is the one I ended up purchasing.
01-29-2010, 05:36 PM
#2437
Thats what I use... the issue is that the G35 model provided has to be built w/ no open verts or double edges, otherwise it will not export properly. All or / or most of the g models out there via T-squid or other model libraries are not built this way since they are mostly shoddy game meshes... A new g35 model will have to be created the proper way using the original for nothing else other than a guide. Terry could import the diffuser I created but not the G itself... It will have to be re-created. Regardless,.. when entering into this realm of product development, as far as stress testing and data analysis, its not just a matter of "making a model". Millions of dollars go into product development of this nature, down from professionally creating the model via CAD/CAM software ala solidworks/ solid edge/ Catia/ ects. then exporting it along w/ all the supporting modules to analysis software ala Pro-E...w/ neglegible tolerances. - If anything is not built to spec, the testing will fail... I suppose you could import generic shapes for simple flow observation, but personally, if XKR is traveling 200mph, I would not want anything I export out of entertainment software and / or something that has not gone through the proper channels to be responsible if anything should go wrong.... I would just take the car to a fab shop that has professional exterior aero knowledge and bang it out what ever makes sense... then do iterative runs at incremental speeds to make sure everything is fine.... G/L. and be safe.
01-29-2010, 05:50 PM
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Thats what I use... the issue is that the G35 model provided has to be built w/ no open verts or double edges, otherwise it will not export properly. All or / or most of the g models out there via T-squid or other model libraries are not built this way since they are mostly shoddy game meshes... A new g35 model will have to be created the proper way using the original for nothing else other than a guide. Terry could import the diffuser I created but not the G itself... It will have to be re-created. Regardless,.. when entering into this realm of product development, as far as stress testing and data analysis, its not just a matter of "making a model". Millions of dollars go into product development of this nature, down from professionally creating the model via CAD/CAM software ala solidworks/ solid edge/ Catia/ ects. then exporting it along w/ all the supporting modules to analysis software ala Pro-E...w/ neglegible tolerances. - If anything is not built to spec, the testing will fail... I suppose you could import generic shapes for simple flow observation, but personally, if XKR is traveling 200mph, I would not want anything I export out of entertainment software and / or something that has not gone through the proper channels to be responsible if anything should go wrong.... I would just take the car to a fab shop that has professional exterior aero knowledge and bang it out what ever makes sense... then do iterative runs at incremental speeds to make sure everything is fine.... G/L. and be safe.
That is the plan Crom....If the computer program wont work....we will get a Fab guy to build it....
Thanks for the input
01-29-2010, 06:28 PM
#2440
Thats what I use... the issue is that the G35 model provided has to be built w/ no open verts or double edges, otherwise it will not export properly. All or / or most of the g models out there via T-squid or other model libraries are not built this way since they are mostly shoddy game meshes... A new g35 model will have to be created the proper way using the original for nothing else other than a guide. Terry could import the diffuser I created but not the G itself... It will have to be re-created. Regardless,.. when entering into this realm of product development, as far as stress testing and data analysis, its not just a matter of "making a model". Millions of dollars go into product development of this nature, down from professionally creating the model via CAD/CAM software ala solidworks/ solid edge/ Catia/ ects. then exporting it along w/ all the supporting modules to analysis software ala Pro-E...w/ neglegible tolerances. - If anything is not built to spec, the testing will fail... I suppose you could import generic shapes for simple flow observation, but personally, if XKR is traveling 200mph, I would not want anything I export out of entertainment software and / or something that has not gone through the proper channels to be responsible if anything should go wrong.... I would just take the car to a fab shop that has professional exterior aero knowledge and bang it out what ever makes sense... then do iterative runs at incremental speeds to make sure everything is fine.... G/L. and be safe.