Learning Forum

[nishantsinghbme]

I am doing LS dyna analysis of simple cubic structure with a top plate with velocity 1000 mm/sec and bottom fixed.

Analysis was performed well.

Now I want to do density based topology optimization. For this when I am setting Objective then in response constraint I am unable to set up response . Kindly help. Image is attached below. Thanks

[peteroznewman]

Read the ANSYS Help and you will find this helpful information:
Prerequisites and Requirements
The Topology Optimization analysis must be linked to (preceded by) a:
Static Structural
Modal
Steady-State Thermal
Static Structuralin combination with either aModalor aSteady-State Thermal
The loading and/or boundary conditions defined in your upstream system are used to create an optimized part based on the objectives and constraints specified in theTopology Optimizationanalysis.

[nishantsinghbme]

Thanks for prompt response.
I am worried for the topology optimization that can only be done with linked structural analysis/model in ansys.
However, I am trying to replicate similar work performed in paper titled "advanced lattice material with high energy absorption based topology optimization"
In this paper author had used lsdyna along with topology optimization .
If any idea please tell me.
Thanks

[peteroznewman]

ANSYS Topology Optimization does not currently support an LS-DYNA analysis.
I expect the authors of that paper have written their own custom version of Topology Optimization for their research.

[nishantsinghbme]

Ok that is the main reason for not working. Thankyou very much for clarification.

[peteroznewman]

Relevant article:
https://3dprintingindustry.com/news/scientists-3d-print-new-impact-resistant-cuttlefish-inspired-biomimetic-structures-187546/

[spiderman]

Hello, I think you should make the lattice model first and then do the energy absorption simulation. As far as I know, topology optimization cannot be optimized into a lattice structure.