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Found 76 results

  1. Hai, I am having a doubt of the values gettig in the result, I have attached a Displacemant contour plot image. The minimum to maximum values are based on what scale. How can we understand the values practically? Let me know Regards, Dani
  2. Hi, I am new to inspire and when I set up the model and try to run the optimization, I see an error "overlap of surfaces in the body7, please check". I checked for overlap of surfaces in SolidWorks and Fusion. The geometry seemed perfect without errors. I don't know why this error shows up in Inspire. Can anyone help me solve this problem? Thank you very much for your time and help. Regards Siva.
  3. Hello all, For stress analysis, I want to show the stress value of some nodes, in order to make a screenshot for documentation. To do this I put a note on the selected node, and in the note i write {entity.contour_val}. Now the problem is, that i get the value of the selected node and all of the nodes surrounding it. But i only want the stress value of that particular node. Does anyone know what to do? Thank you in advance.
  4. Dear all, A month ago , i am using OPTISTRUCT solver to conduct Normal mode analysis. we have changed the solver from Nastran to opitstruct. so i have few questions. 1.with using one optistruct license, is it possible to do multi tasking. ( Means, to conudct two or more analysis at a time). 2. is it possible to increase the speed of analysis. because i can see the cores & processors option. 3. Any import tips or tricks to ease the analysis process. if you guys know the answer for any of the above question. please do let me know.
  5. Hey! I am trying to perform a structural and transient analysis on a Roller Element Bearing model. I am able to perform simple static analysis but I would like to utilize Hyperworks to simulate the following conditions: Inner race to be rotating with a constant velocity and a fixed radial load is applied. Outer race is fixed. The balls should also be rotating. I wish to know how I can give a constant velocity to the inner race of the bearing while also allowing the balls to rotate. What kind of contact constraint should I apply. Right now I am working with freeze contact only. There is one video but in a different solver which does what I have been trying to do. I wish to do it in Hyperworks. Here is the link: Also please suggest whether optistruct's non linear can be used or whether I should switch over to a different solver module! Cheers
  6. Hi, Is it possible in Optistruct to optimize a model and then afterwards analyze it for certain stresses? (run optimization and then run analysis on the optimized shape) I have created a shape with certain forces and stresses and optimized it successfully for minimum compliance & constrained volume, but I would like to analyze the optimized shape for stresses in several different locations of the shape.
  7. Starting from the attached topic, I was able to find a way to visualize my load flow/force flow by creating an expression "Vector from Scalar". Browsing through several publications I found the neccessary Tensor-Elements to combine my force in x-,y- and z-direction. fx = [SigmaXX, TauXY, TauXZ] fy = [TauYX, SigmaYY, TauYZ] fz = [TauZX, TauZY, SigmaZZ] Following the above my expression for fx looks like this: VectorFromScalar(T1.C1, T1.C4, T1.C6) T1.C1 is Table Component XX T1.C4 is Table Component XY T1.C6 is Table Component ZX All three chosen from "Table: Element Stresses (2D & 3D)" Now I need to verify that this is actually what I want^^ So please let me know what you would interpret from this visualization. To get more insight I'll tell you what I am heading for: The Idea is to analyze complex structures referring to the flow/flux of force. This can be very helpful in finding working surface pairs or their connecting channel and support structures within non-obvious structures. Thank you for your help! I am happy for anykind of answer!! Asaad
  8. Following the y-bracket tutorial leaves the optimisation hanging on 100% and analysis fails, saying contact support. The optimisation is definitely no longer doing anything because the process has no load on CPU. Please see attachments. Any help on this would be much appreciated. Best, Darren
  9. Hello, I've trouble analyzing my inspire construction. After setting up my contacts, forces and constraints I'm starting the analysis and then inspire crashes and closes itself. Very strange because i've done several analysis's and optimizations before without experiencing any troubles. Also have I done several analysis's with this same particular model, only the constrains have changes slightly. Does anyone know the answer to my problem?
  10. Hi Everyone, I am working with Optistruct for my Linear/Static Analysis, I am doing Topology Optimization in my model but before I wanted to check whether my model is working regarding with displacement or stress result for my BCs. but after analysis result it shows nothing every displacement result is zero and no change. Can anyone take a look into my model whats wrong or what change I have to make. I used Hex mesh, with 4 Loadcases and one constraint. I have attached my model for the expect reference. It would be much apprieciated if i get any positive response. Thank you in advance. Regards, Muthu.
  11. Hi, I want to see the difference in the stress analysis results between: a shape that is being constrained by a mass and has minimum compliance VS a shape that has a minimum volume fraction and has a stress constraint (using the DTPL card to set it). When I choose the analysis option in optistruct I get the exact same analysis results for both shapes (even thought when I choose optimization option they turn out different). How can I get two different stress analysis results? Better question: Is it possible to optimize a shape and then run a stress analysis test on it?
  12. Hi All, I have set up a model of a pipe section and tried to subject it to torsion. The analysis completes but I have some unexpected results. I would expect the stress to be circumferential rather than axial. Have I set up the model incorrectly? https://www.dropbox.com/sh/rz0mgw3t1h91axq/AACnBNA5HjrX8AGIwFcpbQo3a?dl=0 Thank you Luke
  13. Hi all, I want to do an acoustic analysis of a bus cabin with OptiStruct.The bus is exposed to wind effect during driving conditions.To simulate this effect,i used Virtual Wind Tunnel.I could export the pressure values with related node coordinates.I can use these pressure loads,but these values are in time domain and i need to convert it to frequency domain to use in acoustic analysis. (with FFT etc...) Is there any way to make this conversion with HyperWorks softwares ?
  14. When I applied enforced displacement, the Result Types only shows Displacement option. Von mises / max principal etc are not available. Help please.
  15. Hı everyone, My structure has very less weight and size. I want to lattice optimization and I do. But shape of my structure is changing. shape is very thin. I think this can be due to the weight. Can you help me? Thank you. First picture my structure, Secondly figure at the end of the analysis.
  16. Hı I am trying to analyze with very easy model but I am getting an error. I don't understand why is it causing the error? I'm sharing my file. Thank you. 1.rar
  17. Hi Pau, Do you have any information related of wheel rim casting simulations.
  18. Hello, I am using Optistruct to numerically calculate some FRFs. I have test data to validate my numerical results. Measured test data is an FRF data in the form of Inertance (acceleration/force). I see that there is a big gap in frequency components' amplitudes between the measured data and numerically calculated data, though calculated and measured natural frequencies align very well. I have followed the modal frequency response tutorial and nowhere in the tutorial is it shown that we're specifically selecting the type of FRF we're wanting (e.g. inertance or mobility or receptance). GLOBAL_OUTPUT_REQUEST is used with DISPLACEMENT enabled and that makes me think that, what I am calculating in Optistruct is Receptance and not Inertance. I tried to request ACCELERATION instead of DISPLACEMENT, but ACCELERATION doesn't let me select the output node set which I used for DISPLACEMENT. How can I make sure in Optistruct that the numerical data I'm getting is inertance and not mobility (velocity/force) or receptance (displacement/force)? Best regards
  19. Hello everyone I would like to know, what is the difference between creating a constraint, set its Card Image to TEMPD, set T1 with the temperature and to create 'temperatures' and set the value to the temperature? I thank you in advance for your help!
  20. Hello HyperWork users. I have encountered a problem with Radioss analysis, somewhat connected with my license. Due to lack of separate Radioss programe in SE, we've built engine inside HyperMesh and tried to run analysis. However, each time I run Radioss message below pops up. I've checked ipconfig/all with license already (since I changed Internet provider), as well as re-downloading license file and substituting it. At this point, I honesly strive for any new idea what might be wrog with it. Provided, you need my in- or output files, I may attach them in the next post. Many thanks in advance for your help. EDIT1: I attached files. LICZ_0000.rad LICZ_0001.rad
  21. Hello Guys, I have a working model of a composite helicopter blade. I have extracted the modal frequencies of the blade. I want to know if there is a way to find out at what rotational speeds will the blade reach any of those modal frequencies? is there a way to do this on hyperworks? Kind Regards, Mohamed
  22. Hello,everyone. I am a new user of the hyperworks. And I want to analysis a .iges file with many lines as you can see in the attachment. I want assign the lines with beam property. The problem I get is that when I use 'line mesh' with pbeaml(beam section is a circle) , bar2, and auto settings, some lines can't be assign the property correctly, as you can see in the .png file(the picture). I guess the direction of the beamsection is not correctly set, because when I analysis it by optistruct, I get an error that the 6~8 field of cbeam is zero length. But I want if there any method can generate what I want correctly. I want analysis a more complex lattice model(with lines in all direction), and before this I use this simple model as a practise. Thank you for you time, and any advise will be appreciate. grid_lattice.igs
  23. The 4th European Altair Academic User Day on June 26th (during the European Altair Technology Conference, June 26th - 28th in Frankenthal Germany) provides students, teachers, professors and researchers across Europe to network and share their experiences with Altair’s CAE solutions. Join us to hear how ESAComp assists schools and universities offering composite engineering courses, both in the class room and for post-grad research. Register here -> http://www.altairatc.com/EventPage.aspx?event_id=89&name=Academic+Day+2017 ESAComp-EDU-06-2014.pdf
  24. I'm having an issue with Optistruct: when running an Analysis Optistruct seems to finish it giving "Job complete" but opening the .out file you can clearly see that analysis isn't complete. I'll attach both the .out and .stat files Thank you Piastra_libera_ASET.stat Piastra_libera_ASET.out P.S: the issue seems to disappear without the ASET load collector, could that be the cause?
  25. During a static analysis there are temporary .rs~ files generated which exceed the disk space which results in an error which stops the process. Is there anything wrong or need to be minded in the setup? Never had this in previous analysis. Thanks
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