I see you have a tab 'Linear', did you rename a tab or is there a study of that? Maybe along the lines of the last question, in this linear study you add an 'on flat face' fixture. In this, you have the option to restrain it by rotation and transitions; I'm only getting the transitions, not rotation. Why is that? Thanks.
It is best practice to rename your studies if you have more than one you plan to run, otherwise you end up with "Copy of Study 87" which makes no sense at all! The basis of the answer to your question relates to mesh types and element types. Solid element nodes (corners) have 3 degrees of freedom (dof) which are all translations in the XYZ. Beams and shells have 6 dof which includes both translation and rotation of the elements. If you study has at least one beam or shell, you'll see the additional restraint options, but they would only actually apply to the appropriate element types. I hope that helps!
See the other reply, but sheet metal parts are treated by default as mid-plane shell elements, even though they remain solid in the graphics area during pre-processing. You can right click a sheet metal body and treat it as a solid if you want to. You can also right click any solid and define a shell from it using selected faces, so you are in control of the mesh in the end.
We allowed SOLIDWORKS Simulation to automatically select the appropriate solver for each situation. There are certain situations that require selection of the solver or the nonlinear method but none of these were difficult enough to worry about it. We have an FFE Plus iterative solver and two direct sparse solver options available for non-linear studies.
For a large number of contacts it can be, but it is more sensitive to unstable models. We're preparing an article on this exact subject at mlc-cad.com but the biggest advantage with FFEPlus is the ability to handle extremely large meshes without requiring a ton of memory.
Hi and thanks for sharing your knowledge.However I wonder if you already have done analysis of the screw and nut you have in your presentation? Plus,if yes,with gaps between bolt and nut representing the reality and not at nominal dimension.Beside that, due a pretension in the bolt even with non linear analysis I think you can't do it. Something is really missing in solidworks and there is no way to play around to find solution.Exception in other few softwares available on the market.For sure a negative point....
Great question, the Simulation Premium - Nonlinear training manual has an exercise that involves complex thread interactions with a pre-load, and we have been assisting customers with similar threaded connections with preload on their models. The basic procedure is as follows: 1) Model the part with threads so the threads line up according to the installed state. It may require a bit of calculation or trial and error, but the starting position of the model will have some interference. 2) Apply shrink fit and no penetration contact sets to the faces. Shrink fit for any faces that are interfering, no penetration for anything that isn't. Use the more accurate surface-to-surface bonding option and refine the mesh in the contact areas. 3) Run the study first as a static analysis to make sure it solves linearly, this is optional but helpful to rule out any issues 4) Run the study as a non-linear study. If the preload creates plastic deformation in the material, you'll need to use a temperature-dependent material property curve to force the material into a linear region, then allow the strain to develop as the temperature changes. It certainly isn't the simplest study to setup and run, but it can and often is done using SOLIDWORKS Simulation Premium. The training files can be downloaded here: www.solidworks.com/sw/support/54117_ENU_HTML.htm?product=SOLIDWORKS%20CAD
@@MLCCADSystems Thanks Phillip.I wasn't aware of those training files with threads.In the past I was struggling to find a solution in the company where I was working and at the end we end up to switch to another software.We have play around ,tried finding solutions,a lot of approaches, doing iterative approaches and even we contact our supplier in EU and since it was something not straight forward and without much background to support us and due the uncertainties we just give up and switch for something more robust and with the capacity to find solutions more accurately for NC threads for offsore oil industry.But,even the solutions you have mentionned from what I see it seems very 'primitive' approach for a software who already is on a great stage of knowledge in the market.It shouldn't be so difficult to do something and update a more userfriendly approach.It is just my opinion of course but for sure something can give more trust to the software.Anyway I will go trough the files and also try follow your suggestions and figure out just by curiosity where I will end up and I will come back here to post the results.Regards
@@MLCCADSystems I just have download the exercises and no one is referring threads. I just wonder if I can download your manual or the exercise itself to understand the required steps? Where I am working now we are working with solidworks, maybe I can go trough to the support customer and request the file to them if they have of course. Or maybe go directly to the Solidworks webpage and download the file if available. Just let me know your thoughts! It will be nice to use and know something new. Thanks in advance.
@@luigoncal Definitely reach out to your local support provider for more information, training, and support. The lesson I was referring to is an exercise in the Simulation non-linear manual. In the 2020 version that is under Lesson 4 > Exercise > Pipe > Joint.sldprt. I can't comment on the applicability of Simulation to your application but we support a lot of customers analyzing oilfield threaded connections, and our customers use a combination of SOLIDWORKS Simulation other more expensive tools depending on the specific requirement.
To create a fixture with rotation, use one of the standard fixture types. In the video "On Flat Face" was used, and Use Reference Geometry generally does a great job of allowing you to specify the movement in a custom orientation.
As a mechanical engineering student, this introduction beat my teachers ass! I have one question though, I'd like to know how to set up the time curves. When I click the "Edit..." button, nothing seems to happen or show up. Not sure if this is just a SolidWorks bug, or a restriction by SolidWorks Student Edition.
Depending on where you are you'll either need to select a curve or add your own. Double click the row to add a new row, and start adding numbers. The most simple curve is either a ramping load, like 0,0; 1,1: or a constant value load, which would be 0,1; 1,1. When you add more than one point, you should see the preview come up. If the dialog isn't working quite right I would reach out to your instructor to see if something is not working right on just your machine or in that version, but I'm not aware of an issue like this.
Perhaps, but it depends on the analysis, how big it is, what you can simplify, and what you need to know. For example if you are analyzing the joints of a tube frame you wouldn't use beams because you get no stress detail in the joints, and you wouldn't use solids because it would be inefficient to run. As the size of the model and the scope you analyze gets bigger, you may have to start out with beams to identify the areas of maximum concern, and as it gets smaller you may want to switch to solids for more accuracy in the joints themselves. All of that said, although it is a complex topic, the answer may be as simple as "try it" and if it works out and you are happy with the quality of the results then it was a good idea. I hope that helps!
Awesome, thanks for sharing your knowledge
I see you have a tab 'Linear', did you rename a tab or is there a study of that? Maybe along the lines of the last question, in this linear study you add an 'on flat face' fixture. In this, you have the option to restrain it by rotation and transitions; I'm only getting the transitions, not rotation. Why is that? Thanks.
It is best practice to rename your studies if you have more than one you plan to run, otherwise you end up with "Copy of Study 87" which makes no sense at all!
The basis of the answer to your question relates to mesh types and element types. Solid element nodes (corners) have 3 degrees of freedom (dof) which are all translations in the XYZ. Beams and shells have 6 dof which includes both translation and rotation of the elements. If you study has at least one beam or shell, you'll see the additional restraint options, but they would only actually apply to the appropriate element types. I hope that helps!
I answered my own question. Note to students, this part must be a sheet metal part.
See the other reply, but sheet metal parts are treated by default as mid-plane shell elements, even though they remain solid in the graphics area during pre-processing. You can right click a sheet metal body and treat it as a solid if you want to. You can also right click any solid and define a shell from it using selected faces, so you are in control of the mesh in the end.
Hello! Witch solver are you using ?
We allowed SOLIDWORKS Simulation to automatically select the appropriate solver for each situation. There are certain situations that require selection of the solver or the nonlinear method but none of these were difficult enough to worry about it. We have an FFE Plus iterative solver and two direct sparse solver options available for non-linear studies.
@@MLCCADSystems Is the Direct Sparse better than the FFEPlus in no penetration contacts ?
For a large number of contacts it can be, but it is more sensitive to unstable models. We're preparing an article on this exact subject at mlc-cad.com but the biggest advantage with FFEPlus is the ability to handle extremely large meshes without requiring a ton of memory.
Great tutorial
what a great video, better then what i have been doing for the past 5 years in univ, thank you sir you just helped me a lot.
Great to hear!
Thank you I couldn't figure out how to turn off large displacement
No problem, happy to hear that the video was helpful!
Hi and thanks for sharing your knowledge.However I wonder if you already have done analysis of the screw and nut you have in your presentation? Plus,if yes,with gaps between bolt and nut representing the reality and not at nominal dimension.Beside that, due a pretension in the bolt even with non linear analysis I think you can't do it. Something is really missing in solidworks and there is no way to play around to find solution.Exception in other few softwares available on the market.For sure a negative point....
Great question, the Simulation Premium - Nonlinear training manual has an exercise that involves complex thread interactions with a pre-load, and we have been assisting customers with similar threaded connections with preload on their models. The basic procedure is as follows:
1) Model the part with threads so the threads line up according to the installed state. It may require a bit of calculation or trial and error, but the starting position of the model will have some interference.
2) Apply shrink fit and no penetration contact sets to the faces. Shrink fit for any faces that are interfering, no penetration for anything that isn't. Use the more accurate surface-to-surface bonding option and refine the mesh in the contact areas.
3) Run the study first as a static analysis to make sure it solves linearly, this is optional but helpful to rule out any issues
4) Run the study as a non-linear study. If the preload creates plastic deformation in the material, you'll need to use a temperature-dependent material property curve to force the material into a linear region, then allow the strain to develop as the temperature changes.
It certainly isn't the simplest study to setup and run, but it can and often is done using SOLIDWORKS Simulation Premium. The training files can be downloaded here: www.solidworks.com/sw/support/54117_ENU_HTML.htm?product=SOLIDWORKS%20CAD
@@MLCCADSystems Thanks Phillip.I wasn't aware of those training files with threads.In the past I was struggling to find a solution in the company where I was working and at the end we end up to switch to another software.We have play around ,tried finding solutions,a lot of approaches, doing iterative approaches and even we contact our supplier in EU and since it was something not straight forward and without much background to support us and due the uncertainties we just give up and switch for something more robust and with the capacity to find solutions more accurately for NC threads for offsore oil industry.But,even the solutions you have mentionned from what I see it seems very 'primitive' approach for a software who already is on a great stage of knowledge in the market.It shouldn't be so difficult to do something and update a more userfriendly approach.It is just my opinion of course but for sure something can give more trust to the software.Anyway I will go trough the files and also try follow your suggestions and figure out just by curiosity where I will end up and I will come back here to post the results.Regards
@@MLCCADSystems I just have download the exercises and no one is referring threads. I just wonder if I can download your manual or the exercise itself to understand the required steps? Where I am working now we are working with solidworks, maybe I can go trough to the support customer and request the file to them if they have of course. Or maybe go directly to the Solidworks webpage and download the file if available. Just let me know your thoughts! It will be nice to use and know something new. Thanks in advance.
@@luigoncal Definitely reach out to your local support provider for more information, training, and support. The lesson I was referring to is an exercise in the Simulation non-linear manual. In the 2020 version that is under Lesson 4 > Exercise > Pipe > Joint.sldprt. I can't comment on the applicability of Simulation to your application but we support a lot of customers analyzing oilfield threaded connections, and our customers use a combination of SOLIDWORKS Simulation other more expensive tools depending on the specific requirement.
How you create the hose clamp model?
cant seem to find the advanced rotation fixture in sw2022
To create a fixture with rotation, use one of the standard fixture types. In the video "On Flat Face" was used, and Use Reference Geometry generally does a great job of allowing you to specify the movement in a custom orientation.
Can you share the cad model of hose clamp?
It is a remarkably simple model, here you go: bit.ly/3QP8qsK
excellent video! may i ask for the geometric model of the clip. thank you.
That's a clear and usefull presentation !
Glad it was helpful!
As a mechanical engineering student, this introduction beat my teachers ass! I have one question though, I'd like to know how to set up the time curves. When I click the "Edit..." button, nothing seems to happen or show up. Not sure if this is just a SolidWorks bug, or a restriction by SolidWorks Student Edition.
Depending on where you are you'll either need to select a curve or add your own. Double click the row to add a new row, and start adding numbers. The most simple curve is either a ramping load, like 0,0; 1,1: or a constant value load, which would be 0,1; 1,1. When you add more than one point, you should see the preview come up. If the dialog isn't working quite right I would reach out to your instructor to see if something is not working right on just your machine or in that version, but I'm not aware of an issue like this.
Should you use shell for hollow tubes analysis?
Perhaps, but it depends on the analysis, how big it is, what you can simplify, and what you need to know. For example if you are analyzing the joints of a tube frame you wouldn't use beams because you get no stress detail in the joints, and you wouldn't use solids because it would be inefficient to run. As the size of the model and the scope you analyze gets bigger, you may have to start out with beams to identify the areas of maximum concern, and as it gets smaller you may want to switch to solids for more accuracy in the joints themselves.
All of that said, although it is a complex topic, the answer may be as simple as "try it" and if it works out and you are happy with the quality of the results then it was a good idea. I hope that helps!
Thanks now I have a better mindset when approaching a problem!
Great video! Very good examples, it really helped me choosing the right simulation package!
Glad it was helpful!