What does it mean by model is fully linear?

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hi,

 

I am solving a problem where I am designing a metamaterial using topology optimization (in Optistruct) to mimic the deformation behavior of a traditional elastomer. For this, there are three prescribed loading cases under which the metamaterial must undergo a given value of deformation; for example, for 20000N load, the deformation should be 5mm. I have three load steps for the three loading cases. I am using non-linear quasi static analysis. However, when I generate the result, the .out file says the model is fully linear. What does it mean by 'model is fully linear' ? Attached is the .out file.

 

image.png.b61330328e7fb46425ab283d8f00559b.png

Tagged:

Answers

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited April 2019

    What are the sources of nonlinearity you have in your model? If possible, please share the .out file of the run.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited April 2019

    I am using a linear material but I want to induce geometrical non-linearity using topology optimization. I want the solution (i.e. the diplacement curve) to be non-linear.

    Please find attached the .out file.

     

    Thanks,

    Aishwarya

    Unable to find an attachment - read this blog

Categories