Wear Analysis (Archard Wear Model in LS-Dyna)

[Dennis Chen]

Hello all, I am hoping to get some advance on why my initial_contact_wear is not being written into dynain file.    I built a super simple model with a small block sliding on a large block after a pressure is applied from the small block onto the large block.    the dynain file has no initial_contact_wear file.   s=intfor was used obviously in the command line. 

the full k file is here - https://limewire.com/d/9lVTN#zyGerH0rP4.   In case you can't download, below is screenshot of key cards.  I can see in both the documentation and in a paper in dynamore's site from 2016 that this is the right thing to do but I am just not getting the initial_contact_wear card... 

Appreciate you all's input on what happened.   feel free to test this out and let me know if it's something wrong on my end. 

segment 99 is the body of the large block...I also tried setting everything to default, also no intial_contact_wear in dynain file.

[James Kennedy]

Dear Dennis,

 

Several presentation that may be of interest:

 

Wang, Y.-F., and Yang, Z.-G., "Finite Element Model of Erosive Wear on Ductile and Brittle Materials", Wear, Vol. 265, Issues 5-6, pp. 871-878, August, 2008.

 

https://www.researchgate.net/publication/223397232_Finite_element_model_of_erosive_wear_on_ductile_and_brittle_materials

 

Borrvall, T., Jernberg, A., Schill, M., Deng, L., and Oldenburg, M., "Simulation of Wear Processes in LS-DYNA", 14th International LS-DYNA Users Conference, Dearborn, Michigan, June, 2016.

 

http://www.dynalook.com/14th-international-ls-dyna-conference/simulation/simulation-of-wear-processes-in-ls-dyna-r

 

Dong, S., Sheldon, A., Pydimarry, U, and Dapino, M., "Friction in LS-DYNA: Experimental Characterization and Modeling Application", 14th International LS-DYNA Users Conference, Dearborn, Michigan, June, 2016.

 

http://www.dynalook.com/14th-international-ls-dyna-conference/modeling/friction-in-ls-dyna-r-experimental-characterization-and-modeling-application

 

Dong, S., and Sheldon, A., "Characterization and Modeling of Engineering Friction and Wear with LS-DYNA", 11th European LS-DYNA Users Conference, Salzburg, Austria, May, 2017.

 

http://www.dynalook.com/11th-european-ls-dyna-conference/simulation-miscellaneous/characterization-and-modeling-of-engineering-friction-and-wear-with-ls-dyna

 

Sincerely,

James M. Kennedy

KBS2 Inc.

April 4, 2025

 

 

From: ls-d...@googlegroups.com [mailto:ls-d...@googlegroups.com] On Behalf Of Dennis Chen
Sent: Thursday, April 03, 2025 6:05 PM
To: LS-DYNA2 <ls-d...@googlegroups.com>
Subject: [LS-DYNA2] Wear Analysis (Archard Wear Model in LS-Dyna)

 

Hello all, I am hoping to get some advance on why my initial_contact_wear is not being written into dynain file.    I built a super simple model with a small block sliding on a large block after a pressure is applied from the small block onto the large block.    the dynain file has no initial_contact_wear file.   s=intfor was used obviously in the command line. 

the full k file is here - https://limewire.com/d/9lVTN#zyGerH0rP4.   In case you can't download, below is screenshot of key cards.  I can see in both the documentation and in a paper in dynamore's site from 2016 that this is the right thing to do but I am just not getting the initial_contact_wear card... 

Appreciate you all's input on what happened.   feel free to test this out and let me know if it's something wrong on my end. 

segment 99 is the body of the large block...I also tried setting everything to default, also no intial_contact_wear in dynain file.

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