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  1. Today
  2. Optiimization not successful

    One explanation: when the wishbone push the rocker (bell crank), the rocker will have a potential to rotate, that means it has the potential to push the spring damper and pull the anti-roll bar, so the spring damper and anti-roll bar will in turn apply forces to the rocker. I don't really know whether I should apply forces which from the spring damper and anti-roll bar on the rocker or simply only apply the force from wishbone. And also not really know which holes should be applied a Support. Thank you so much Zizhe
  3. Optiimization not successful

    Hi Felix, Is this the right result? Actually I don't really understand why my loadcase is a non-static loadcase. The force on the upper hole is the force from spring damper, the force on the right upper hole is the force from wishbone, and the force on the bottom hole is the force from anti-role bar. When the car moving, the rocker can rotate around the left bottom hole. I would be much appreciated if you could help me with my file. Thanks Zizhe
  4. Optiimization not successful

    Zizhe, All your optimization results are wrong. Your loads are representing a non-static loadcase. They are causing a momentum in your joint e.g. for your rear rocker ~ 170Nm. This is the starting point for the optimization issue you are facing. Once you got the loads correctly, you should have zero momentum in your Support. Then, you should reduce the degree of freedom for rotation of this support. For example by using a bolt or a support directly. You will not achieve any plausible structures by optimization, if you are getting extremly high stresses like you do. Our tutorial model is statically defined, by using two joints. Yours not, using just one allowing to rotate. Regards, Felix
  5. Yesterday
  6. Optiimization not successful

    Hi Felix Thanks for your quick answer! I need to explain my problems more specifically. The rocker should have the ability to rotate around one hole. I've watched some of your tutorials. And there is also one tutorial which optimized a rocker. Based on this tutorial I think I should add a joint in that hole instead of a screw or a support. That's the reason why I added a joint before, the other forces are also added correctly. I'm optimizing two of my rockers, front and rear. I faced mainly 2 problems: 1. Front rocker, the analyse and optimization both are failed. It shows "Error 99" 2. Rear rocker, the analyse and optimization went well, but (a) the result with the optimization using maximum stiffness looks bad (picture shows the result) (b) after the analyse I got the factor of safety which is 0 (picture 2) (c) based on when I run optimization with minimum mass but the result shows always Design Violations (I tried factor of safety with 0.5, 1.2, 2.0) I've tried solving this problem for almost one week but still failed and I do really need some help Zizhe 01_Rocker Front.stmod 01_Rocker_Rear.stmod
  7. Last week
  8. Rhino newcomer

    Hello Francesco! Thank you for your reply. You have answered some of my questions but I would like to clarify some points and appreciate if you would be able to answer them! 1. Example. I drew a circle somewhere. Now I can move it to 0,0,0 world coordinate with use of the translate command. Changing world/local axis changes only the location of the pivot point of this circle. I am happy with it to be where it is but I want to move it TO 0,0,0 world. Now the fields of TO X,Y,Z show only the relative change of the translation coordinate, not the absolute world coordinate which I want. Or maybe I am missing smth? In Rhino I assign the 0,0,0 Absolut coordinate to a shortcut. So I run move (translate) command, pick ref point of the subject (circle's center with osnap) and press a shortcut. Very easy and fast. Here I am really missing that I cannot pick ref point on the subject to be moved. Say quadrant. 2. This is really I can't understand. Say, there is a sweep feature, and undersees a profile. I want to select it but I cannot see it so I don’t know where to click. The easiest way is to select it with a non-crossing frame. What I have to do here - select it (will select all) and then start to deselect other things with the same crossing frame. Can you imagine how many clicks I have to perform if the desired profile is surrounded by many objects? At lease 4 - over it, under it, left and right. I think it is primitive but MUST have instrument. Furthermore, when I try to combine objects - the crossing section just doesn’t work - it pops up with the particular item to select from. It wants me to select items one by one but why? Why cannot I cross select items I want to combine, what tech process/algorithm it violates? 3. Yes, layers are what I use to distribute items in Rhino and keep them organized. Will do here as well, because World tree is not smth what is associates with world organize to me And I am missing features such as - copy object to layer (Rhino). Now I have to make a copy/instance and then manually drag it to the new layer. Would be much easier with copy to layer feature (an in options I would add - copy to layer as an instance or a copy) 4. Thanks 5. UV follows isoparms, but it doesn't mean I want to map it accordingly. I didn’t spend much time on it and will have to check more. Thanks. 6. Not sure. I see when I select the set of edges the scale axis doesn’t change for approximated normal direction. It scales it down to flat polygons in not desired direction. Face select seems to orient the axis correctly, but with few of them selected again the direction seems to be wrong. As for the other instruments for Polynurbs. I agree, 3D max is a top pro and polymodeling is its main purpose. I don’t consider it as solid modeling app, or nurbs (it has it but to just consider it is just there). But take a look at Rhino's T-splines. Not as what they turn it in the Fusion 360, but in Rhino 5. They are a way more flexible and powerful. I really took a huge interest to Solidthinking for this superb combination of poly+nurbs modeling. At what I see polynurbs features here is really week, but I do hope you will develop it to more powerful and precise instrument in future! Really wish you luck!
  9. Rhino newcomer

    Hi Alexus, First of all thanks for your interest in Evolve, it is really appreciated, and more than this we appreciate your direct feedback and questions. I'll try to answer them point by point: 1- We have both Local and World axes reference (two icons in the main top toolbar), you can switch between them and this will change the reference values in the coordinates for Translation for example. 2- The selection is only crossing, the only combinations are to add/remove/intersect the selection. 3- The world browser is all you have in the scene, it can be tricky sometimes, that's why you also have layers you can create and also the construction tree to maybe help you find the objects you used in the history 4- Actually every handle of the radius has 2 points, one of them for position and the second one for the radius handle size, and you can drag them both. 5- No, there's no UVW and unwrap. We have a mapping type called UV that follows the isoparametric curves of the object for mapping. 6- Polynurbs: A- Yes, the weld vertices only works with boundary edges for now. I guess you could create a new point on an edge and then delete the other two, but I think this is also too manual for your preference. D- This can be achieved by selecting the Face, activating the Scaling and scale the Z direction down to 0, same thing for edges. B,C,E,F,G - These are features that currently we don't offer, and as far as modeling goes, these can be seen as limitations of course, but when comparing to 3DSMax or any other pure polygonal modeling software, of course they have much more experience and focus on polygonal modeling than we do. A lot of the features that you are missing are already been reported as feedback for developers, and our developement is really fast (1 new version + 3 updates a year). I would like to add that we are on the verge of a revolution in terms of code and UIX with the next version, Evolve 2018, coming out in Q1 2018, so you can expect some major changes in both interaction with tools and functionality, with this I'm not saying you shouldn't learn Evolve 2017, but 2018 will be much better! Nevertheless we find your feedback very precious, and for sure we will report your points to our developement team. Thank you, solidThinking Team
  10. Create archway to support a freeform Surface

    Looked at the model Arjun...clever, but complex - but clever.
  11. Optiimization not successful

    Hi Zizhe, Welcome to the sT Forum! At first, you might check your loads. Seems like you are trying to analyse and optimize for a non-static loadcase, which would cause movement around your support (and huge deflections). Once you got the correct loads, you should use a screw/support without any freedom to rotate. You can simply check if you did everything correctly by running a quick analysis. If you have further questions, you might take a look in the altair university: Hope this helps, ~ and good luck at FSG Felix
  12. Create archway to support a freeform Surface

    Hi, Apologies for the delayed response. Please let me know if the attached file is along the lines of what you are trying to design. structure.evo
  13. How to set up image planes?

    Hi Peter, We do not have an option to enable images in 3D viewport currently. The work around is to apply the image as a texture but this is only visible in interactive rendering mode.
  14. Rhino newcomer

    Hello there! At once want to apologies for many words and too many comparations / whishes. My story. For many years I’ve been working in several applications such as Rhino with T-splines, if required – SolidWroks and standalone renderer Keyshot. On the one hand, I like Rhino for its super-fast workflow, flexibility and power, on the other – I hate it for its fillets/chamfers really pathetic abilities with huge restrictions – so it is much faster to throw a model into SolidWorks and do any fillets (you call it rounds here) and then export it back. Also, I loved Rhino for T-splines. Indeed, this is not 3D Max which I find a king of poly-modeling with super-duper convenient tools which I have never seen in other applications but… what really attracted my attention in Solidthinkin is a hybrid modeling, so you can combine polynurbs with other operations, other nurbs tool and always be able to go back to polynurb and edit it. Make a base shape from polynurbs, trim it, cut holes in it without having to think about topology, brilliant! I like the sort of parametric modeling techniques in the application. Actually, it is smth in between of SolidWork browser and 3D Max stack tree. But I like it. Also, the interface looks as Rhino, uses some similar curve and surface tools and I thought I would get a hand in it quite fast. But having played around with it for a few days I have a bunch of questions. I am really at stupor at some of them and not sure I am ready to leave Rhino for keeps in favor of ST (SolidThinking). Why there is no absolute coordinate input in Translate properties? Only relative one. You can only change the pivot point location relatively world axes but not the object Selection window has ONLY crossing effect?? I spent 2 hours searching in the Internet to find how to make the boundary selection (non-crossing). Max has a switch, Autocad / Rhino – depending on the angle where you start it. I just can’t imagine it doesn’t have it! I’d rather be with non-crossing selection – would be easier. I will not explain why I need it, I think it is very much clear that in most of the case you don’t want it to be crossing. Ctrl+alt+selection has some strange effect but it is not it. World tree. Maybe it is a matter of habit but I find it really hard to work with. A mix of all possible uninformative object names. Could you maybe at least make a different icons for surface, curves, solids etc so it would be easier to navigate through? SolidWorks has a really nice and clean tree. In ST it is a mind blower for me. Maybe it is a lack of practice, but when I first run SW it was all clear to me. Here it takes time to understand. Sometimes when I hide smth I have difficulties to find it in the tree to unhide. Fillets (rounds). Works fine but why can’t you add interactive radius? Now you only can type it. Not interactive at all. Texturing. Where is UVW? Where is UVW unwrap? Is it possible to work without it to make texture mapping for complex surfaces the way a user wants? Polynurbs – was really my hope since Rhino 6 supports T-splines no more, Fusion 360 is really limited and not flexible. And I am really missing some features Weld. Why only boundaries? Weld and target weld is a main principle of polygonal modeling, of retopology (3D max, Rhino T-splines, Fusion, Blender, Cinema4D – all have it!)a. And you propose to delete entire face to free up the edges and then weld it? And what if I want to weld only the upper vertexes of the face and leave bottom one intact? Delete a face, weld upper vertexes and append a new face that I have to build/close hole? This is really a huge question for me. No grid snap when extruding faces, sliding edges? Snaps works only when translating them, But I want to extrude with snap – have to extrude, then go to translate and snap, then again go to extrude and again snap. Either pls make it snap, or maybe add the ability to shift+translate = extrude/copy as in many applications. No edge constrains. Related to this 3D max is super precise in mater of retopology, you can move vertexes around with edges restrictions! Here you have to either draw a a helper nurbs-line to snap to it, or make it on sight, roughly. Why no snap to edges? It could be sort of edge move restriction. Do you know such a feature as flatten vertexes? It approximates a selection of vertexes into a flat surface. If the pivot point and local coordinate could adjust to the selection normal it would be possible, but it can’t so I see no other options Chamfers. In polygonal modeling you very often want the ability to delete edge loops, that is why the correct chamfer is the one that doesn’t remove the edge – it has it but just adds 2 extra loops adjacent to it. So in case you want to remove the chamfer – you select these loops and delete them, leaving the corner as it was originally. What do you do if you want to remove a chamfer with 2 edges, with corner edge gone? You have a headache. You will lose your shape! Rhino, Max and other apps has the option to “keep the face”, so the original edge remains where it was. I really want it here! backface culling/ignore backfacing - I want to be able to have the ability not to select vertexes that are on the back faces. Again - standard feature. keep shape when inserting an edge loop - enable/dsiable the automatic shape adjustment when inserting a loop, so it remains the shape in subdiv mode and the shape is different in low-poly mode. Well, that’s it for the moment. I am sure I might continue but this is the main points I can’t understand. Maybe in some of them there are solutions or instruments to cope with, so I am sorry than. Just as I said I’ve been working with Solidthinking for a few days. It has a huge potential and I think Iif I could find the answers to above questions I would move to it for keeps! PS. It has a really cool renderer! Not Keyshot/Vray but still very-very nice and can be used in most of the cases!
  15. Hello! I have a rocker which should be optimized. I added force and joints, but no matter I try maximize stiffness or minimum mass (there is always "design violations" with the safety factor) the results are not so good. The picture shows how the rocker works. The .stmod file is also attached. Thank you very much! Best Regards 01_Rocker_FEM.stmod
  16. Install Python modules

    Hi guys, need some help to install pandas module to work with Compose. Any ideas? Went to the local help and just saw some supported packs [below]. Does it mean that it is impossible to install other packs? Supported Packages Numpy-1.9.2 Scipy-0.15.1 Reportlab-3.1.44 Colorama-0.3.3 Ecdsa-0.13 Matplotlib-1.4.3 (generates plot in a Python command window) Pillow-2.7.0 Pycrypto-2.6.1 PyTest-2.7.0 Requests-2.9.1
  17. Earlier
  18. Design Violations

    You must increase your design space. In your current setup there is no room to take material away. That's why there is a design violations: even with a completely filled design space, the part is not strong enough. Good luck! S.
  19. Hi there, I'm new to EVOLVE and want to explore it's capabilities. I do have a lot experience working with Modo 11 and Rhino 5 as a product designer . Though when it comes to surfacing in Rhino all is possible but on numerous account's these surfaces were not accurate enough for manufacturing. Although Rhino supports history it doesn't look as robust as in EVOLVE. So EVOLVE might be a very nice companion in my tool box. As we speak I started the trial along side a real project. Here's the first question: How do I setup image planes as reference, witch I can see in the 3D viewport instead of background images?
  20. Design Violations

    You can edit your model in Inspire. Please have a look at our Modeling tutorials
  21. Design Violations

    It's only one part and when I click design space it would automatically select the surface of the whole part instead of some certain area. Is there any function that can split the part or I need to redesign the part in order to separate it? Thank you .
  22. How to use "Python window"

    Greetings, In View tab on Inspire 2017, there is a "Python window". I'd like to know what it is and what I can do with it, but I can't find any information about it in "Help". I need your help... Thank you in advance.
  23. Design Violations

    Hello, Here are a few tips to help you with your model: We recommend that you do not apply loads and supports directly on design space but separate your part in 2 regions (design space and non-design space) and apply your loads on non-design space You should run an analysis of your original design and check the safety factor on this one. If your safety factor on the original part is already below your objective safety factor then optimization will likely fail. Thanks, Matthieu
  24. Design Violations

    Hi, I'm a final year student currently undergoing a final year project about lower arm suspension. I'm still new to this software and I'm hoping that you guys can help. After I've optimized my lower arm suspension by minimization of its mass, it says design violation and it had shown me my original factor Of Safety 2.1. Does it mean it needs to be higher or lower? Or did I do something wrong in applying the force? grtab.stmod
  25. Perfect. Thank you Claudio. Mark
  26. Thermal Optimization

    Hi, You can apply a temperature, which will just affect the thermal expansion. Stresses, caused by the thermal expansion are used to analyse and also optimize a part. You might take a look at the Inspire help: Regards, Felix
  27. Hi, use Alt key+ Right Mouse button on detail. Claudio.
  28. Hi, I am new to Evolve and wondering if there is a way to orbit a zoomed-in detail of an object with precision? To explain better, when I zoom into an area of an object that I want to work on in greater detail and when I attempt to orbit around that detail ( an edge as an example), the orbit does not allow me to rotate the object with precision but instead seems to rotate the whole object about world origin which makes it impossible to orbit around the detail of that object. Is there such way to orbit a zoomed in detail of an object with higher precision? Thanks, Marko
  29. Thermal Optimization

    We did some tests in the past but the thermal input did not effect the results.
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