|
[Sponsors] |
Dynamic Explicit Impact Simulation and comparing with homogenized effective propertie |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
February 9, 2020, 11:19 |
Dynamic Explicit Impact Simulation and comparing with homogenized effective propertie
|
#1 |
New Member
Join Date: Feb 2020
Posts: 3
Rep Power: 6 |
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? *I used the same plastic properties for the homogenized simulation as I did for the actual lattice impact simulation. Thanks in advance! Last edited by Jwes; February 9, 2020 at 21:58. |
|
February 10, 2020, 08:01 |
|
#2 | |
Senior Member
Join Date: Nov 2015
Posts: 244
Rep Power: 11 |
Quote:
|
||
February 10, 2020, 08:09 |
|
#3 |
New Member
Join Date: Feb 2020
Posts: 3
Rep Power: 6 |
Thanks for replying karachun!
Just to clarify, thus means that homogenization will be quite useless for my scenario where i am looking into the possibility of plastuc deformation at different speeds? The contact that i had for the ball and plate was tangential contact with penalty of 0.3 and normal contact at default values. Thanks! |
|
February 10, 2020, 14:55 |
|
#4 | |
Senior Member
Join Date: Nov 2015
Posts: 244
Rep Power: 11 |
Quote:
|
||
|
|