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Prateek Gupta

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Posts posted by Prateek Gupta


  1. On 6/30/2017 at 1:39 PM, Prakash Pagadala said:

    Hi Prateek,

     

    Have a look at this. You can use OSSmooth to get the optimized model or as CAD format in HyperMesh

    hey Prakash thanks for the help.

    one more problem is there when I do size optimization of a simple plate there no error came and the result is clearly in hyperview.
    but when I do perform the same thing on a different structure it is not showing the result. Here I'm sending the ".hm" file of my problem.
    can you please see n tell me where I had done wrong.

    single_lug_2D_size.hm


  2. 2 hours ago, Prakash Pagadala said:

    Hi Prateek,

     

    Please define a optimization constrain on your model. Since there is no constrain and the objective is to reduce model, all the material is removed.

     

    Also, as a design variable choose only Design space.

    Ohh! Thank you Prakash.. I thought that It would be sufficient to give the max stress value through Analysis>>Optimization>>topology>>parameter only.


  3. On 6/5/2017 at 5:26 PM, Prakash Pagadala said:

    Hi Prateek,

     

    You can consider intermediate results if all constraints and objective. But we recommend to consider final iteration results.

     

    Can you check your design and non-design space. Since I don't know about the model or optimization setup I cannot comment on stresses. 

    Thank you Prakash, for replying me on my query. Here I have attached the ".hm" and ".fem" file of my component. Can you please check it and tell me what is wrong I had done.

     

     


  4. On 6/5/2017 at 5:17 PM, Prateek Gupta said:

    I am doing a topology optimization on a Aircraft wing-fuselage lug. And it also optimize the component without any error in its ".out" file. But when I check the results in Hyperview  of its last 20th iteration, it is completely removing my design space material. So should I take the resulted component from 9th or 10th iterative solution or Is it because the stress induced is very less than the max stress constraint applied or I'm doing any thing wrong? Please anyone guide me.

    Thankyou

     


  5. I am doing a topology optimization on a Aircraft wing-fuselage lug. And it also optimize the component without any error in its ".out" file. But when I check the results in Hyperview  of its last 20th iteration, it is completely removing my design space material. So should I take the resulted component from 9th or 10th iterative solution or Is it because the stress induced is very less than the max stress constraint applied or I'm doing any thing wrong? Please anyone guide me.

    Thankyou


  6. I have to perform a topology optimization on a simple rectangular lug as like shown in fig., only the thickness is comparatively large. I have divided the lug in to two part from centre: one is designing space and another is non-designing space. And taken stress as dconstraint. But while compiling following errors are coming:

    "Stress/strain/force response is applied to topology or free-size domain for stress-constrained topology or free-size optimization,

    Please use STRESS option on the design variable definition card."

    So please anyone how should I correct this error...
    THANK YOU

    Welded-Ladder-Lug-1-300x300.jpg


  7. Error coming during compiling an static analysis problem, It is showing:

    "Invalid to use free id grid as an independent id grid in RBE3 data.

    Free spiders are not allowed to be independent grid in RBE3 data.

                                 RBE3 id     =      5527

                             free grid id     =      5959

            weighted components     =        123                                      "

     

    How should I correct this error?

    Please anyone tell me.

    Thanks alot in advance.

     

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