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Jwes February 9, 2020 20:05

Using Material Designer for homogenization
 
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Hi,

I am doing a simulation of a ball striking a plate that has a lattice structure within it. (See Plate.jpeg)

The results are shown in (Result.jpg)

I Then took a unit cell and brought it into ANSYS material designer to obtain the effective properties. These will give me the young's modulus (E1, E2, E3), shear modulus (G12, G13, G23) and 3 poison's ratio.

However, when I used these effective properties, my simulation result for the homogenized structure is vastly different. (see homogenize_result.Jpg)

Is this because homogenization only gives the effective elastic properties and not the plastic properties (yield stress vs strain)

*I used the same plastic properties for the homogenized simulation as I did for the actual lattice impact simulation.

Although the simulation was done in ABAQUS, I am posting the question here as I would like to know if anyone has had experience with Material Designer.

Thanks!


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