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  3. Save the result

    Thank you
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  5. Programming in Inspire 2017

    By the way, if I use Optistruct or Hyperworks, is it possible to program the material properties or other properties? I'm also planning to program mesh type (I would like to set as beam elements rather than solid elements)
  6. Programming in Inspire 2017

    Hi Felix, Unfortunately, it is still a concept, so I haven't made any models... First thing I have to do is to accurately model 3D truss structures in Inspire. But thanks anyway. Best regards,
  7. Programming in Inspire 2017

    Hi grasshopper, neither programming within Inspire or anisotropic materials are supported. Maybe there is a way to model your wire with the features we have already. Feel free to share ideas and pictures (if possible). Regards, Felix
  8. Programming in Inspire 2017

    Greetings, I'm thinking about optimizing a 3D-truss structure by Inspire 2017 7305. And I would like to know whether it is possible to program the property of materials. I'd like to design a part of the structure as a tension wire. So, I'd like to define its compression stiffness as zero, and its tension stiffness as non-zero. If it is not possible, I would appreciate if anyone can tell me how to do that (though it may be beyond the scope of this website).
  9. Setting of Weighting function

    I'm sorry for my late reply... Thank you very much for your detailed explanation.
  10. Setting of Weighting function

    Hi Grasshopper, you can maximize both simutaniously, but you can't manipulate the weightening function (which is set automatically). Inspire is using Altair Optistruct as a solver, which is calculating a compliance for each mode and the static compliance. Please see below an abstract from the topoOpt.out , located in the Inspire Scratch directory. Combined Compliance Index The combined compliance index is a method to consider multiple frequencies and static subcases (loadsteps, load cases) combined in a classical topology optimization. The index is defined as follows: This is a global response that is defined for the whole structure. The normalization factor, NORM, is used to normalize the contributions of compliances and eigenvalues. A typical structural compliance value is of the order of 1.0e4 to 1.0e6. However, a typical inverse eigenvalue is on the order of 1.0e-5. If NORM is not used, the linear static compliance requirements dominate the solution. The quantity NORM is typically computed using the formula: Where, Cmax is the highest compliance value in all subcases (loadsteps, load cases) and is the lowest eigenvalue included in the index. In a new design problem, you may not have a close estimate for NORM. If this happens, OptiStruct automatically computes the NORM value based on compliances and eigenvalues computed in the first iteration step. Abstract from topoOpt.out ITERATION 39 Subcase: 1 -------------------------------------------------------------------------- Label x-force y-force z-force x-moment y-moment z-moment -------------------------------------------------------------------------- Sum-App. 0.000E+00 1.000E+03 0.000E+00 -2.000E+01 0.000E+00 1.870E+02 Sum-SPCF -6.333E-09 -1.000E+03 2.689E-11 2.000E+01 -6.171E-11 -1.870E+02 -------------------------------------------------------------------------- the 2nd satisfied convergence ratio = 2.8748E-03 Objective Function (Minimize COMB ) = 1.47125E-02 % change = -0.29 Maximum Constraint Violation % = 0.20159E-05 Design Volume Fraction = 3.00000E-001 Mass = 5.61149E+000 Subcase Weight Compliance Epsilon Weight*Comp. 1 1.000E+00 8.520537E-03 -2.098521E-03 8.520537E-03 ------------ Sum of Weight*Compliance 8.520537E-03 Note : Epsilon = Residual Strain Energy Ratio. Subcase Mode Weight Frequency Eigenvalue Weight/Eigen 2 1 1.000E+00 3.823884E+02 5.772571E+06 1.732330E-07 2 2 1.000E+00 9.579818E+02 3.623050E+07 2.760106E-08 2 3 1.000E+00 9.707180E+02 3.720026E+07 2.688153E-08 2 4 1.000E+00 1.466867E+03 8.494565E+07 1.177223E-08 2 5 1.000E+00 1.667356E+03 1.097531E+08 9.111363E-09 2 6 1.000E+00 1.821137E+03 1.309317E+08 7.637568E-09 ------------ Sum of (Weight/Eigenvalue) / Sum of Weights 4.270613E-08 Mode Normalization Factor x 1.450E+05 ------------ Weighted Inverse Eigenvalues 6.191977E-03 Weighted Compliances 8.520537E-03 ------------ Combined Compliance Index 1.471251E-02 Hope this helps! Kind Regards, Felix
  11. Save the result

    Yosef, If you have acess to 3matic from Materialise, you can import the FEM deck from the Inspire scratch folder to create a AM deck (which is a materialize format) or a huge STL. Regards, Felix
  12. Presentation of results - Inspire / Hyperview

    Mario, You might would like to decrease element size to get a more detailed look at the stress distribution. For my point of view, there is all right. We can clearly see the maximum peak of sheer stresses below the surface - so the van mises stresses. This effect is discribed in the Hertzian compression theory, which can also explain defects like pitting. BR Felix
  13. Hi Felix, The asymmetry is not the problem, but the stress distribution does not look plausible. Corresponding to the pressure cone (area) of a screw connection, the highest load should occur at the top. Best Regards, Mario
  14. Setting of Weighting function

    Greetings, I have a basic question about the optimization in Inspire 2017 7305. It is possible to maximize the stiffness as well as the natural frequency of structures in Inspire, but how can I decide the weighting function of these two objective functions? In general, in such multi-objective optimizations, I think it is necessary to adjust a weighting function. Maybe it is performed automatically by Inspire, but how is it done? On which is focused more - maximization of stiffness, or maximization of natural frequency? Thanks in advance.
  15. Optimization Error

    Thank you very much for your explanation, Mario!
  16. Presentation of results - Inspire / Hyperview

    Hi Mario, You have supported the lower plate. So the stress results of pretension must be asymetric. Or do you see something else? BR Felix
  17. Hi Felix, Thank you for the explanation, now I can understand it. Unfortunately, this does not improve the plausibility of the result. Best Regards, Mario
  18. Presentation of results - Inspire / Hyperview

    Hi Mario, By default, Inspire is using Grid Point Stresses, so we have to choose them in HV to compare. I also slightly adjusted the min/max in the Inspire legend. Hope this helps! Best Regards, Felix
  19. Inspire 2017.3

    Hi, Where is the link for downloading INSPIRE+EVOLVE 2107.3 The list with local help does not contain English Yosef
  20. Save the result

    If I can not export, why is this helpful?
  21. Doing an analysis of a small plastic part in Inspire. No issues getting the static analysis to run, but when I try buckling modes I get "Analysis Error 165", anyone come across this and know how to solve? Thanks Chris W
  22. Hi again, The "Autocalculate Meshsize" of both parts is switched off and min. is 1mm, max is 5mm. There is nothing more to do, only run a calculation. If it is not comprehensibly, then i can send also results (but the file is much bigger, since you need also the h3d for Hyperview). Version i'm using is Inspire 2017.3.1 build 8625. Best Regards, Mario
  23. Presentation of results - Inspire / Hyperview

    Hi Mario, The file doesn't contain results or the information what element/size were used. BR Felix
  24. Hi, The file is already attached in the post. (Pretension.stmod) Best Regards, Mario
  25. Presentation of results - Inspire / Hyperview

    Hi Mario, please share your element size and type (first or second order), so I can try to reproduce your issue. Thanks! BR Felix
  26. Save the result

    Hi Ffog, With Inspire 2017.3 the Lattice optimization will allow you to compare different performances for a Topology Optimization and Lattice Designs. At this moment, export is not supportet. If you are an advanced user, you might use Altair Optistruct and Altair Hypermesh to do further investitations for Lattices. Kind Regards, Felix
  27. Hobby/personal license?

    Hi Zachary, Glad to hear you like Inspire - your designs are looking awesome! Feel free to send me a PM with your contact details, so we can contact you directly. Thanks! Kind Regards, Felix
  28. Hello, I have a question regarding the presentation of results. Find attached two pictures of the same result presented in Inspire and Hyperview (from scratch directory. fem & h3d). You can see the result of a screw pretension. The stress distribution look extremely different and i'm a little bit surprising. Is there any reason for that? Best Regards, Mario Pretension.stmod
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