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I tried to simulate an axial compression test for a lattice (porous) structure but It takes too much time and it doesn't give me the right answer (when I compare with experimental results). So, I was wondering if there are another methods to simulate these kind of structures. I have heared about homogenization method but I really don't know if it works or not. Can you please help me with this? I really need to be guided so please help me if you know anything about this. Thank you in advance P.S My lattice structure is a gyroid based structure

Goli
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  • I think you need to better define your test method and the goal for the test, also the type of structure you are performing the test - engineering structure, or atomic structure. – r13 Mar 28 '22 at 19:41

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you can use it as a beam and subject it to a load, P at the center. By measuring its deflection you could approximately find its young modulus, I.

In order to make it easy to measure the deflection, you should pick a shallow beam like slab, say a beam with length= 50 times its height, say:

  • L= length= 100cm
  • h= height = 2cm
  • B= width= 4cm $$I= \frac{Bh^3}{12}$$ and the deflection will be $$\delta=\frac{PL^3}{48EI}$$

$$E=\frac{PL^3}{ (48I)\delta}=\frac{12PL^3}{48Bh^3\delta}=\frac{PL^3}{4Bh^3\delta}$$

kamran
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there is a material behavior in AbaqusCAE namely porous elasticity, it can describe porous elastic behavior at the cost of extra paramaters.

Holomorphic Guy
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