General Mechanical

Lattice Optimization

• Duke
Subscriber

Hi. I was trying to create a lattice structure as part of the post-processing process after I performed lattice optimization on the part. I used the "shell" tool in SpaceClaim, and it created a lattice structure as infill and left a shell at the outer edge of the part. Is there a way that I could create lattice structure for the entire body of the part, without any shell wrapping around the lattice structure? In other words, is there a way that I could create lattice on the surface of the part's body, if that makes any sense?

• Rob
Ansys Employee

Maybe a sketch will help explain? Which tools are you using?  Note, please post images in with the text as staff are not permitted to open attachments.

• Duke
Subscriber

Here are the pictures of what I got so far. The first one is what I put for the Topology Optimization setup. The second is what I put for the "Shell" tool in SpaceClaim, using the "use density attributes" option. The third image is the lattice structure that I got from shelling the part in SpaceClaim, which has a very thin shell around the lattice structure as you can see, because I put the thickness of the shell to be 0.1 mm as an attempt to minimize it. And the image below is what I hope to make my lattice structure turn out.

• Keirou
Subscriber
Arrayhey hello Duke, I'm also doing something about a femur implant with Ansys' lattice optimization. And I've also read the article written by Altair in 2018 whose picture was cited in your comment. I think I may answer your question. The model in the picture can't be made directly by Altair's hyperworks. The idea of that article is using topology optimization to get a random geometry shape of where to optimize and where to keep. Then they may use other tools( I don't know what they use) to design the latter model what they called lattice optimization model to analyze in hyperworks as you see in the article. This is my view of this article. So I think the design idea of Ansys and Altair is different. The former's lattice optimization is automatically based on density that you got in your upstream result, but the latter doesn't have this function.n