I REALLY enjoyed this vid. Thanks. I noticed that you applied your own aesthetics to the topologically optimised bracket, enhancing its appearance very much. I think the relationship between topological optimisation and engineers' aesthetics is very interesting. The T-O.ed bracket looks a lot better after you applied your design judgement to it. Somehow I would trust it more than the more 'bone-like' solution which Solidworks generated to begin with. I guess everybody has implicit feelings for things, even we non-engineers...
Hi, I'd like to point out that this simulation is very flawed and I see this in many "tutorials" of this kind. I actually don't think that I saw a single video where such a showcase was properly done. The reason is that you miss-use cylindrical constraints while you need a contact or proper spring model. Have a look at the top left corner. Where do you think it would break? Now look where you vonmises stresses are higher, would you not expect the exact opposite?
You need to use a contact with a proper interface that only considers pushing forces. A frictionless contact should suffice for this. Solidworks offers the no pen contact for that but probably not in combination with topology optimization. For that, use ANSYS of Optistruct@@NavinF
@@bazz9920 That depends on the practical application. If the bolts are welded onto the part or if the entire assembly is actually only one part, then yes, one could model it that way. But at that point, why not make it a single part? In this case the bolts are not welded though, the part can freely rotate around the bolts. But the used contact is fixing nodes all around the cylindrical shape and these nodes now sustain pushing and pulling loads, which is not correct for a bolt. A bolt can only sustain pushing loads. To give you an analogy: a rope. A rope can only sustain pulling forces. Once you push it, it collapses. Now would it be correct to create a rope with a stiff beam? Certainly not.
He most probably redid the model and used the outcome from the optimization as a reference. So he took a look at the outcome to see where ie a smaller thickness was possible.
Whenever I try to run the Topology Optimization study i get an error that says "Result Files are not available. You may have to re-run the study..." Any idea how to rectify this issue?
Hi Gary, in my experience I was able to rectify this issue by changing the geometry of part to be slightly larger, and saw another user solve the same error by moving the file path. That being said I suggest adding more material to the part if possible or moving the file path on the properties section of the Solidworks study. Hope that helps you troubleshoot!
Great video. I am working on optimizing the shape of the ribs in a model aircraft wing made of balsa. Can you tell me where I can find tutorials or literature for the same?
Hi Stephen, You can give the Topology Optimization frequency boundaries to optimize around in addition to the non-harmonic loading. You can specify, for example, that the resulting model have a first resonant frequency no lower than 1000 Hz and this will act as an optimization boundary for the calculation.
It seems very limited, no stress constraints, other objective functions? I've used the one in Abaqus and it lets you set virtually any combination of objectives and constraints you can come up with
@@thormanfield1305 If it can be output from abaqus in an implicit FEA procedure, then I think so. It doesn't make sense to use gradient-based topology optimisation for an explicit procedure. I'm sure this one has extra features like that, but the point is that abaqus can be much more general, not just maximising stiffness
Is there a way to carry out similar process without decreasing the thickness of the material. We generally laser cut the plates thus making it difficult to change thickness.
You can use a combination of thickness and manufacturing constraints in the setup to ensure the nominal thickness is maintained where the material is retained during the optimization process. Thank you.
The SOLIDWORKS Simulation tool has 3 tiers. The topology optimization tool is available in the second tier called SOLIDWORKS Simulation Professional. You should ensure that you have access to this level of the software to have access to this capability.
Unfortunately this model was made more than 4 years ago and we do not have the exact model any more. However if you watch towards the end of the video (6:00 ish) when they are discussing the cut out they do give dimension on that triangle. From there we can estimate the rough size of the at around 150mm on the long side and about 100 on the short.
Great question! The cantilever is a simple extruded sketch with another extruded cut for the two circles. The exact dimensions are not very important if you would like to make a simple model to follow along with the video.
Hi Agza, The best advice I could give to you is find your local SOLIDWORKS dealer and sign up for a Simulation course: www.solidworks.com/sw/purchase/varlocator.htm
Between 5:14 and 5:22, we extracted the raw shape from the analysis using extrude and cut features from SOLIDWORKS using the raw shape as guidance. You can use the simulation overlay tool to help with this. Check out this video for more details : ruclips.net/video/A-tagMWBLBw/видео.html
Hi Karan, If you are getting a crash in SOLIDWORKS, for any reason, you should go through this crash diagnostic process (kb.goengineer.com/go/default.aspx?kbID=12970) and/or involve your local VAR to assist in diagnosing the crash.
I REALLY enjoyed this vid. Thanks. I noticed that you applied your own aesthetics to the topologically optimised bracket, enhancing its appearance very much. I think the relationship between topological optimisation and engineers' aesthetics is very interesting. The T-O.ed bracket looks a lot better after you applied your design judgement to it. Somehow I would trust it more than the more 'bone-like' solution which Solidworks generated to begin with. I guess everybody has implicit feelings for things, even we non-engineers...
Hi, I'd like to point out that this simulation is very flawed and I see this in many "tutorials" of this kind. I actually don't think that I saw a single video where such a showcase was properly done. The reason is that you miss-use cylindrical constraints while you need a contact or proper spring model. Have a look at the top left corner. Where do you think it would break? Now look where you vonmises stresses are higher, would you not expect the exact opposite?
How would I go about creating "a contact or proper spring model"?
You need to use a contact with a proper interface that only considers pushing forces. A frictionless contact should suffice for this. Solidworks offers the no pen contact for that but probably not in combination with topology optimization. For that, use ANSYS of Optistruct@@NavinF
But the structure is intended to be held by the cylinders right
@@bazz9920 That depends on the practical application. If the bolts are welded onto the part or if the entire assembly is actually only one part, then yes, one could model it that way. But at that point, why not make it a single part?
In this case the bolts are not welded though, the part can freely rotate around the bolts. But the used contact is fixing nodes all around the cylindrical shape and these nodes now sustain pushing and pulling loads, which is not correct for a bolt. A bolt can only sustain pushing loads.
To give you an analogy: a rope. A rope can only sustain pulling forces. Once you push it, it collapses. Now would it be correct to create a rope with a stiff beam? Certainly not.
amazing!
great job, best regards, BRASIL
Thanks
You solved my problem easily by your describtion❤
5:20 how did you go from the weird looking one to the smooth design. The first one doesn’t look clean enough for display
He most probably redid the model and used the outcome from the optimization as a reference. So he took a look at the outcome to see where ie a smaller thickness was possible.
It can also be done with Polynurbs
very informative, thanks
Such a fantastic tool!
Excelente vídeo. Parabéns! Fron Brasil
Great video
Thanks
Whenever I try to run the Topology Optimization study i get an error that says "Result Files are not available. You may have to re-run the study..."
Any idea how to rectify this issue?
Hi Gary, in my experience I was able to rectify this issue by changing the geometry of part to be slightly larger, and saw another user solve the same error by moving the file path. That being said I suggest adding more material to the part if possible or moving the file path on the properties section of the Solidworks study. Hope that helps you troubleshoot!
For assistance, please contact our tech support team at goengineer.com/contact.
Excellent
Such a great, to the point video. Thanks so much
You're very welcome! Be sure to subscribe for more great 3D CAD Design and 3D printing tutorials.
Great video. I am working on optimizing the shape of the ribs in a model aircraft wing made of balsa. Can you tell me where I can find tutorials or literature for the same?
Thank You. If you are interested in additional SOLIDWORKS Tutorial videos be sure to subscribe to our channel ruclips.net/user/goengineer.
How can I set maximum angles restriction for 3d printing without helpers?
Hello. We don’t have overhang constraints with topology optimization as of version 2021. Thank you.
hi sir why i cannot open the topology on the new study
Really nice video. I followed step by step, but i keep geting a "Static solver failed" after i hit the "run this study". Any idea?
Please reach out to your VAR's technical support team so they can look at your specific set up.
Thanks a ton! Fabulous video!
Glad you liked it! Be sure to subscribe for more great 3D CAD Design and 3D printing tutorials.
Can you confirm whether or not harmonic resonance be optimised?
Hi Stephen,
You can give the Topology Optimization frequency boundaries to optimize around in addition to the non-harmonic loading. You can specify, for example, that the resulting model have a first resonant frequency no lower than 1000 Hz and this will act as an optimization boundary for the calculation.
Wow... that could be very helpful as I am trying to optimize a musical instrument. Thanks for your post@@goengineer
It seems very limited, no stress constraints, other objective functions?
I've used the one in Abaqus and it lets you set virtually any combination of objectives and constraints you can come up with
Including wear rate?
@@thormanfield1305 If it can be output from abaqus in an implicit FEA procedure, then I think so. It doesn't make sense to use gradient-based topology optimisation for an explicit procedure.
I'm sure this one has extra features like that, but the point is that abaqus can be much more general, not just maximising stiffness
Is there a way to carry out similar process without decreasing the thickness of the material. We generally laser cut the plates thus making it difficult to change thickness.
You can use a combination of thickness and manufacturing constraints in the setup to ensure the nominal thickness is maintained where the material is retained during the optimization process. Thank you.
Thnks!
Why the topology study is grayed out and I can’t click on it?
The SOLIDWORKS Simulation tool has 3 tiers. The topology optimization tool is available in the second tier called SOLIDWORKS Simulation Professional. You should ensure that you have access to this level of the software to have access to this capability.
Please can you tell the dimensions of this cantilever beam.
Unfortunately this model was made more than 4 years ago and we do not have the exact model any more. However if you watch towards the end of the video (6:00 ish) when they are discussing the cut out they do give dimension on that triangle. From there we can estimate the rough size of the at around 150mm on the long side and about 100 on the short.
love the video thank you
You are so welcome!
Great Video. How you make the cantilever
Great question! The cantilever is a simple extruded sketch with another extruded cut for the two circles. The exact dimensions are not very important if you would like to make a simple model to follow along with the video.
What's wrong wit the video between 5:0 to5:10
can u suggest me how a topology optimization is done to obtain compliant gripper
I suggest looking it up in literature, it's been done
which mouse are you using?
I want to learn simulation please guide me
Hi Agza,
The best advice I could give to you is find your local SOLIDWORKS dealer and sign up for a Simulation course:
www.solidworks.com/sw/purchase/varlocator.htm
whats happens from 5:14 to 5:22 ?? How i can do that ??
Between 5:14 and 5:22, we extracted the raw shape from the analysis using extrude and cut features from SOLIDWORKS using the raw shape as guidance. You can use the simulation overlay tool to help with this.
Check out this video for more details : ruclips.net/video/A-tagMWBLBw/видео.html
Is the optimization tool not present in solidworks 2016
Im unable to find optimization in simulation module
Hi Firoz,
Topology Optimization did not yet exist in SOLIDWORKS 2016. It is a new function to SOLIDWORKS 2018.
doing same thing in 2016 final result is generating crash report.
and system crash
Hi Karan,
If you are getting a crash in SOLIDWORKS, for any reason, you should go through this crash diagnostic process (kb.goengineer.com/go/default.aspx?kbID=12970) and/or involve your local VAR to assist in diagnosing the crash.
please give dimension
ruclips.net/video/IangXACFW48/видео.html.