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Found 40 results

  1. Mrt

    parametric optimization

    Has anyone done parametric optimization in optistruct-hyperstudy? i want to do that crossbar can slide through frame. I defined morph volume. But i don't know how can i connect desvar and morph volume? Is it right way? i have seen just size/shape configuration, so it's not my way. i had tryed to save volume and looked for txt file. it doesn't consist elements, so i can't use it in hyperstudy. could anyone explain me how does it works?=) Thanks.
  2. Hi All, Im trying to run a DOE in hyperstudy using nastran as solver. Once i click evaluate task for 100 Iterations it runs fine for the first 4 runs, then the nastran gives an error "Analysis has stopped due to ......" Nastran open 100 tabs for all the 100 runs. But in the hyperstudy i can see for all the 100 tasks it evaluated "success" for write, execute and extract.. Can someone help me in executing this? Do we need to give any extra parameter to run with nastran? Thanks in Advance Manikanth
  3. Dear all, please help me with the parameterization of LOCATION of three cross-members of ladder frame chassis for DOE study using LHS(random design points). The cross-members are to be translated in y-direction in both directions limited to ±100 units. The design variables (continuous, not discrete) are the locations of cross-members from rear end i.e. Y1, Y2 and Y3 and response is the first modal frequency. I want to generate a response surface for freq in terms of Y1, Y2, and Y3. Please tell me how to parameterize their locations to be varied as continuous variables if possible or otherwise to create response surface.
  4. Hi, We are trying to simulate the HST-AcuSolve Pipe Tutorial as given in the document. We are not able to find the template_srf2.osi file for the definition of file in responses (Step-6 in page 14). Please let us know if any is missed in the document for the creation of *.osi file in the directory defined. Regards, Vignesh V. CFD_Shape_optimisation_Acusolve_HST_pipe.pdf CFD_Shape_optimisation_Acusolve_HST_pipe.pdf
  5. Andy@LamteqSolutions

    Beam Optimisation using Hyperstudy

    Hello, I am trying to utilize hyperstudy to optimize a bespoke shell section Beam. Essentially the beam is a hollow I-section but we would like to use hyperstudy to parameterize the thickness. Is this possible? The solver we are using is Optistruct.
  6. Hi All, I have been using Nastran as my solver for Hyperstudy and it works well till the execution of my simulation. But HyperStudy has to wait for some time till the simulation is complete before it starts extracting the responses. I know that I need to write some script which checks whether there are no errors in the simulation and then extract the data. Has anyone come across this and can you let me know how we can script this?
  7. ajaykumar

    Shape Optimisation

    Hi rahul, i need your help. You can see a below picture for example i am showing. Same as like one tube both ends are fixed and need to pass the stress requirement with reducing the diameter of the tube. So my aim to reduce the diameter of the tube. Is it possible in optimization. i have searched all the tutorials but i didn't find anything.If you have any example files please share me
  8. Hello, We have been running a quit heavy optimisation with hyperstudy using the GRSM algorithm. After about 37 runs, the computer stopped or we had a power cut or something, so we had an abnormal termination of the optimisation. Is there a way to restart the optimisation from where it stopped instead of running the whole thing again? It is a very heavy opt, so it took us a day and a half to run up to iteration 37, and it would be very important for us to just restart from where left. Many thanks in advance.
  9. akshay325

    Number of plies as variable

    Hello, How can I make the number of plies as the variable rather than the thickness of the ply, since the ply thickness has to be 0.2 mm, and the number of layers can change. And I see that there is nothing like manufacturing thickness when I connect HyperWorks to HyperStudy. I'm using GA as solving algorithm. Thank you.
  10. Hello, I'm importing a .hm file to the HyperStydy which is a composite model. But I'm not able to import variable other than Material and Moment. Can you point out where I might be going wrong?
  11. I'm planning to use HyperStudy for multi objective Optimization of laminated composite structure, and I wanted to know it is possible to make orientation of ply as one of the design variable? I want optimum angle for ply, for the given load condition, rather than sticking with the angle given by user. Thank you.
  12. VigneshKPV

    Parametric Study in AcuSolve

    Hi, I wanted to setup the parametric study for a fan flow analysis at different operating speeds by using HST-AcuSolve. It would be really helpful if it is possible to perform parametric study using hyperstudy. Regards, Vignesh V.
  13. dracu777

    expression builder doesn't open

    Hi all, I am following the hyperstudy e-book, beam.fem example (Hyperstudy 13.0) but I can't access the expression builder (see attached picture). The nominal run has been written, executed and extracted correctly. What can I do to input the responses I want to investigate? I can't even use the file assistant (probably introduced in the version 14.0?)
  14. Andy@LamteqSolutions

    Hyperstudy - Design Parameters with Boolean Logic

    In the expression builder within hyperstudy, is there anyway to apply boolean logic? I could really do with adding IF statements. I've looked to the functions tab and there doesn't appear to be an option.
  15. Andy@LamteqSolutions

    Bounds Question

    Hi All, Am trying to understand hyperstudy using Shapes and I have encountered a bit of a headscratcher. My plate has a hole with a radius of 50mm and I want to examine the effects of changing that radius. When I apply a shape to it and get to hyperstudy it asks me for an upper and lower bound (default -1 and 1) and an initial of 0. My question is, what exactly do these numbers relate to? When I run it creates a hole 37.5mm and 62.5mm radius respectively, but how does that relate to lower and upper bounds of -1 and 1? OKay it has consistently created a difference of 12.5mm but how did it calculate this? Many thanks in advance. Is there any way I could have just said initial = 50mm, lower = 45mm and upper = 55mm? Regards Andy
  16. inasiopo

    Run Path question

    Dear all, We are trying to set a HyperStudy simulation. We have a batch process which calls a tcl file and the we read outputs. The problem goes as follows: In the batch process we need to know at which folders we are currently. When Hyperstudy runs the nominal run for instance, it creates folder C:/Users/user1/Desktop/Gen02/approaches/nom_1/run__00001/m_1/ and copies there our .fem file (input) In our batch we are using param %HST_APPROACH_RUN_PATH% to get the path of that folder. But we are getting the parent folder: C:/Users/inasiopo/Desktop/Gen02/approaches/nom_1/run__00001 So .../m_1/ is missing!!!! How can we get the correct path? Hope we explain it in a good way. Many thanks in advance
  17. Hello, I am trying to use Hyperstudy to perform an inverse analysis to characterize a rubber. But in the tutorial (p367 attached pdf) I used, there is an .xy file required (Stress-Strain data points). How can I switch my type file .txt to .xy please? Thx Regards, Corentin HyperStudy_11.0_Tutorials.pdf
  18. Attached is a Hypermesh deck of a structure whose mass I’m trying to minimize. The structure has a square shaped core covered on the top and bottom by composite facesheets. Shell elements have been used for modeling. The size of the square and the thickness of its wall determine the buckling characteristics of the facesheets. I’ve modeled using a square of side 6mm and its wall thickness is 1.5 mm (shown in the snapshot below). By varying the size of this square and changing the wall thickness, I’m looking to minimse the mass, the constraint being that the buckling factor must always be greater than 1. Could you please help me achieve my objective? Thanks, Kushal Agarwal. square_foam_opti.hm
  19. Hello All, I have two questions 1. I am trying to do a DOE in Hyperstudy (2017) with ABAQUS (2017) as Solver. I created a new model, parametrized the XX.tpl file, registered the solver and typed XX.INP in solver input file field. The problem occured when i tried to define a response. I ran the simulation in Abaqus once to get the .odb file. I then put the file in 'approaches\nom_1\run__00001\m_1' to define responses. But when i tried to drag the file into the work area, it says 'file not recognized by Hyperstudy reader' and Hyperstudy text extractor gets selected. Please help me with this problem. 2. Is it possible to do DOE for physical experiments (i.e. without creating an expression for evaluating responses from Design variables) ? Thank you, WBR R: Prasaenna
  20. Hi All, Please find attached tutorial for CFD optimisation of a manifold. Some of the applications, where it can be used includes, HVAC ducting • Reduce pressure drop • Increase flow uniformity • Maximize/minimize outlet temperature Heat exchangers • Maximize pressure drop • Maximize heat transfer Brake discs • Minimize temperature • Maximize heat transfer • Brake cooling ducts External Aero • Minimize drag • Maximize negative lift and many more. I have also attached a simple Pipe CFD optimisation tutorial. Please do contact us for any queries. Regards, kamlesh Acusolve_Hyperstudy_tutorial_manifold.zip Acusolve_Hyperstudy_Tutorial_Pipe.zip
  21. How to define ply percentage & balance constrained in HyperStudy? Following are definition from fem file. DCOMP 1 STACK 2 + PLYPCT 45 20 25 BYANG + PLYPCT 90 55 60 BYANG + PLYPCT 45 20 25 BYANG + BALANCE -45.0 45.0 BYANG I have created model in hm for 32 ply. In hyper stydy I am defining discrete design variable for ply direction which will take up values -45,0,45,90. But I am unable to add ply percentage & balance constraints in hyper study. 32_ply.fem
  22. in this tutorial, when to set up a fit approach,it require two matrix,one for input,and another for validation, why do this? and when to select the fit mode, the help only says to set the appropriate method, I do not understand this point. whether need I to select the fit method for each above matrix separately? at this point, I think it could not be like that,because the two matrix is in one fit process except we build two fit approachs. for this step, I am frustrated. wish to get some help, thanks in advance! CAE lover
  23. Hi, I created a study where I want to analyse the effects of varying plythickness and plyangle of a carbon plate. I defined plythickness and plyangle of every ply as design variable (parameterized file) and then created a DoE. Now i got problems with the response. I dont want to see the composite stress for each Element as itself, but for each ply to have a better overview of the effects. Is there a possibility of filtering my response? By defining my response, I can select the element which is evaluated regarding composite stress. I exactly need the same for selecting a whole ply. Thanks for your support. Regards
  24. Hi there, I would like to perform a design sweep using Hypermorph and Hyperstudy. The responses I am looking for are the Von Misses stress and/or Strain energy density averaged over a set of elements with a given SID. I have given it a fair attempt, but am stuck. I am only able to select one element at a time when defining responses from file sources. Is there a way to reference all elements in a set, average them and return their mean- whether or not in this order? Thank you and Happy hollidays
  25. pratikhyperworks

    Hyperstudy-external function

    hello group I have want to know about registering hypermath function in hyperstudy and also how to exchange values between two to definr response See the attached file Best Regards Pratik Hyperstudy Problem.pdf
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