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      Please click here for a short but important announcement   03/26/17

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  1. Hello,

    Sorry i text you again.

    I can't send message to you, therefor i should send in here.

    I stick in problem.

    As I talked erlier i want to do optimization, i have model in Hyperwork and i tried to do this by Msc.Nastran and then change patameters in bdf file read value from bf06 file use these in my code.


    Here is problem, i get output for nastran and use nastran for calculation of linear static and another time i did it by optistruc by linear analysis but there is big diffrence bewteen them.

    I don't know which one is my answer.


    I really thank you for your time,




    1. Prakash Pagadala

      Prakash Pagadala

      Hi Mohammad,


      Can you share the results and also OptiStruct model file just to check if there is anything missing?

    2. mohammad


      Thank you for your response.

      I have also asked this question in link below , and you have commented on this but i have check and the direction are the same.


      Can I have your Email address to send file in private?




    3. Prakash Pagadala

      Prakash Pagadala

      Hi Mohammad,


      Please use the Filedropbox link in my signature below:https://ftam1.altair.com/filedrop/~Ce4god 

  2. Hi, I have model in Hyperwork and i got problem. In Hyperwork I can get output by solver, i have tried to do this but there is somethings strange happen. The grids parameter in optistruc fem and Nastran dat file are the same but when I apply the load to hyper-view, the values are change?! I don't know why this happen. Here the excel file and show this. Any comment? Best, Mohammad bendingreals4taguchi1.xlsx
  3. optimization

    Honestly I am new in Hypermath. This is exactly what i want, i want to read specific nodes displacement and fetch it in function then do calculation in obtain new design variables and update my model and repeat this iterations until find optimum values. But i don't know how to read Optistruc output and how to modify fem file, this is what i want to. Do you have sample or manual for this? I really appreciated for your comment. Best, Mohammad
  4. optimization

    Thank you for your respone. i didn't know anything about Hyperstudy, Thank you, i wanted do this with MINITAB and SPSS. I want to develop an optimization code and apply it for structural optimization, and i should find a way to do this, i stick into problem in Msc.Nastran then I search for other way. you mean by Hypermath, i can not access to data from optistruc i just need to find deflection of nodes and then set new parameters and again find new deflection automatically.
  5. optimization

    Thank you so much for your consideration. Honestly i have model in hyperwork and i wanted to do this by MSc.Nastran and matlab but my model is very complex and also i cant define any node to check the value of that in nastran output. there for i should find a way, i search and i `m going a little through hypermath and i found out that it has optimization function just like matlab. i just wonder that, can i connect hypermath and hyperwork together and use my model as function, then see this just program language to do my project. Thanks, mohammad
  6. optimization

    in Hypermath i can define a function and write code and also it has functions. instated of define a function, i would like to define my model as function. then do optimization.
  7. Hi,

    Sorry i write in here, but i wrote my question in optistruc 4 days ago and i didn`t get answer.

     I asked tinh and he didn`t know about this.

    I found that you have experience in hypermath,


    would check this.






  8. optimization

    Thank you. Do you know that, Is it possible to link model with fmincon? Best, Mohammad
  9. Hi,

    Sorry i write in here, but i wrote my question in optistruc 4 days a go and i didn`t get answer.


    I found that you have experience in this topic.


    would check this.






  10. optimization

    Hi I want to know that can I use Hypermath function like fmincon or I my self write code in Hypermath and link it to model in Hyperwork and do optimization? If yes, is there any source that i can use? Best, Mohammad

    Also i try to use PBARL, here is my file. but it has problem and the error is : *** ERROR # 1479 *** in the input data: Incorrectly formatted numeric data in field 9. (If it is a character field, it should start with a letter.) *** Run terminated because of error(s) in the input data. would you help me on this too? PBARL.hm

    Hello, i just want to know about the difference of PBARL vs PBEAML? I want to use size optimization of hallow rectangular beams(width, height, thickens). which one is better? After i have defined properties and component and nodes, how can i insert this? Thanks.
  13. Beam with non unoform

    I have found my mistake. Thanks all.
  14. Beam with non unoform

    Hi @Toan Nguyen @Prakash Pagadala, Thank you for your reply. Here my model, my result and my analytical calculation. Thanks, cbar.hm
  15. Beam with non unoform

    Hello I am just new in hyperwork. I want to do displacement analysis for non unofrom beam as shown below. i have 2 different cross section, i defined 2 hyperbeam, 2 properties and 2 component. i use 3 nodes and use cbeam to connect the nodes, the define load step use optistruc to solve analysis, but my analytical value and value that optistruc is obtained are different. i just thank that maybe i should use RBE2 in B, am I right?if yes how can i do that? If no, what is my fault. Big thanks