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
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$\begingroup$ 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. $\endgroup$– r13Mar 28, 2022 at 19:41
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$\begingroup$ royalsocietypublishing.org/doi/full/10.1098/… .. treating lattice structures as bulk materials $\endgroup$– martMay 19 at 7:33
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2 Answers
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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 $$\delta=\frac{PL^3}{48EI}$$
$$E=\frac{PL^3}{ (48I)\delta}=\frac{12PL^3}{48Bh^3\delta}=\frac{PL^3}{4Bh^3\delta}$$
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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.
