Optimizing base of a 6- Axes Roboter

David_20258
David_20258 Altair Community Member
edited December 2020 in Community Q&A

Hello,

I am studying mechanical Engineering and have to create some kind of Introduction on how to use Inspire. For this task I have to show it on an topology optimization.

The requirements are:

- It must be a Multybody System

- It must contain motion and forces

The Model I have to use is an ABB 6- Axes Roboter.

The part which has to be optimized is the base- part of the Roboter.

So far I understand, I can´t set the base part as "Ground" because it also is my Designspace.

The sections where it gets bolted to the real ground are partitioned and therefore became non- Designspace.

At this point I got my first optimization results, but I am unable to run a new analysis on the optimized parts. As I start the analysis there is a notification that there should not be forces applied to the designspace and the analysis will not finish. To detect where the problems begin, I tried to start a new motion analysis on the optimized part and found out, that the connections/ supports for the base are lost and the model collapses because of the gravitation. Because of the missing supports there are no loads/ forces applying on the base and the analysis can´t get any results, but this is just my theory.

I hope someone of you can help me to solve this problem.

Greetings

David

 

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Answers

  • Matthieu Pupat
    Matthieu Pupat
    Altair Employee
    edited December 2020

    Hello,

    To achieve what you want you will need to optimize your part inside the Motion tab. Please see Tutorial: Optimizing a Part with Motion in the Inspire documentation.

    Thanks,

    Matthieu

  • David_20258
    David_20258 Altair Community Member
    edited December 2020

    Hello Matthieu,

    thank you for your advice. I tried the optimization inside the motion tab from the beginning on, but always failed to analyse the optimized part.

    After watching the mentioned tutorial I set the partitioned part where the fastening would be as "ground" and connected it via fixed joint to the designspace. i somehow managed to get a result which I then could analyse, but only once. Now I tried to reproduce the process and fail again.

    How would you set the connection/ joint between the partitioned parts for the fastenings and the designspace/ base.

    My approaches were:

    - Add support to the middle of the base (because it also is partitioned) and the bottom surface of the base

    - Create fixed joints and Add support as these would be screws

    - the method I mentioned from the tutorial

     

    greetings

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