# Archard wear simulation using "PrePoMax v2.0.11 dev" **URL:** \ **Category:** Bug Reports\ **Created:** [June 1, 2024, 2:21pm UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782 "2024-06-01T14:21:47Z")\ **Posts on this page:** 19\ **Page:** 1
**Author:** ![Amos](https://avatars.discourse-cdn.com/v4/letter/a/ebca7d/32.png) [@Amos](https://prepomax.discourse.group/u/Amos)\ **Post date:** [June 1, 2024, 2:21pm UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/1 "2024-06-01T14:21:47Z")
Good evening, Using “PrePoMax v2.0.11 dev”, I have replicated the wear analysis present on the youtube channel, PrePoMax & CalculiX - Wear analysis ( [https://www.youtube.com/watch?v=0tHW6A3IRjA&t=601s](https://www.youtube.com/watch?v=0tHW6A3IRjA&t=601s) ). But when i run the simulation i’m getting an error message shown in the picture below.\*\* How do i Fix it? NB: All other simulation are giving correct results except “this wear analysis” simulation. ![WhatsApp Image 2024-06-01 at 18.06.59_2067133f](https://global.discourse-cdn.com/free1/uploads/prepomax/original/2X/6/60605ff3265333c6299b0db939ceb84a721cdb94.jpeg) ---
**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\ **Post date:** [June 1, 2024, 3:34pm UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/2 "2024-06-01T15:34:16Z")
What if you expand the Details ? ---
**Author:** ![Amos](https://avatars.discourse-cdn.com/v4/letter/a/ebca7d/32.png) [@Amos](https://prepomax.discourse.group/u/Amos)\ **Post date:** [June 1, 2024, 4:55pm UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/3 "2024-06-01T16:55:18Z")
![MergedImages](https://global.discourse-cdn.com/free1/uploads/prepomax/original/2X/a/ab8d2f8191abe22d7f4cc7af623e75154e0fd7a9.jpeg) ---
**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\ **Post date:** [June 1, 2024, 8:00pm UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/4 "2024-06-01T20:00:56Z")
Can you share the file with this analysis ? ---
**Author:** ![Amos](https://avatars.discourse-cdn.com/v4/letter/a/ebca7d/32.png) [@Amos](https://prepomax.discourse.group/u/Amos)\ **Post date:** [June 2, 2024, 6:07am UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/5 "2024-06-02T06:07:23Z")
as a new user, I’m not allowed to upload an attachment. Is there any other alternative? ---
**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\ **Post date:** [June 2, 2024, 7:18am UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/6 "2024-06-02T07:18:37Z")
You can upload the file on some hosting website and share the link here. ---
**Author:** ![Matej](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Matej](https://prepomax.discourse.group/u/Matej)\ **Post date:** [June 2, 2024, 8:05am UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/7 "2024-06-02T08:05:14Z")
The wear analysis procedure changed slightly, so it must be prepared differently. But the error you get is still storage. Sharing the file will be the best way forward. ---
**Author:** ![Amos](https://avatars.discourse-cdn.com/v4/letter/a/ebca7d/32.png) [@Amos](https://prepomax.discourse.group/u/Amos)\ **Post date:** [June 2, 2024, 9:21am UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/8 "2024-06-02T09:21:10Z")
here is the link to the file. [https://drive.google.com/drive/folders/1WqF9YF4u0OEco3uWH-nLat7\_bGeARzid?usp=drive\_link](https://drive.google.com/drive/folders/1WqF9YF4u0OEco3uWH-nLat7_bGeARzid?usp=drive_link) ---
**Author:** ![Amos](https://avatars.discourse-cdn.com/v4/letter/a/ebca7d/32.png) [@Amos](https://prepomax.discourse.group/u/Amos)\ **Post date:** [June 2, 2024, 9:21am UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/9 "2024-06-02T09:21:53Z")
kindly share on what was changed sir. ---
**Author:** ![Amos](https://avatars.discourse-cdn.com/v4/letter/a/ebca7d/32.png) [@Amos](https://prepomax.discourse.group/u/Amos)\ **Post date:** [June 7, 2024, 5:10am UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/10 "2024-06-07T05:10:33Z")
Any suggestions on where i got it wrong? ---
**Author:** ![Matej](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Matej](https://prepomax.discourse.group/u/Matej)\ **Post date:** [June 10, 2024, 5:47pm UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/11 "2024-06-10T17:47:44Z")
You found a bug. The problem is that, currently, mesh smoothing does not work with linear finite elements. So you have two options: set the number of smooth steps to 0 (Model → Edit → Wear smooth steps = 0) or use a slower one to use parabolic finite elements. In the Geometry module, select the Meshing parameters and set Second order = Yes. I will fix the bug in the next developer version. ---
**Author:** ![Amos](https://avatars.discourse-cdn.com/v4/letter/a/ebca7d/32.png) [@Amos](https://prepomax.discourse.group/u/Amos)\ **Post date:** [June 16, 2024, 3:17pm UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/12 "2024-06-16T15:17:16Z")
Thank you, the simulation is now able to converge. I really appreciate! In the next edition kindly include the wear modes and mechanism. If the software kind be able to kindly show the modes and mechanisms after simulation, would make numerical wear simulation a completed work. ---
**Author:** ![Matej](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Matej](https://prepomax.discourse.group/u/Matej)\ **Post date:** [June 16, 2024, 8:17pm UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/13 "2024-06-16T20:17:46Z")
> [@Amos](#): > > include the wear modes and mechanism I do not understand what you mean by wear model nad mechanism. ---
**Author:** ![Amos](https://avatars.discourse-cdn.com/v4/letter/a/ebca7d/32.png) [@Amos](https://prepomax.discourse.group/u/Amos)\ **Post date:** [June 17, 2024, 12:43am UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/14 "2024-06-17T00:43:50Z")
When we conduct wear analysis experiment in the lab, examination of the surfaces reveals wear modes and mechanism. The modes can be analysed virtually while the mechanisms require a microscope. In the wear simulation, you did on youtube. We are able to measure wear depth etc… But we cannot visually see modes and mechanisms, like scratching of the sleeve surface, etc. Wear modes refer to the specific types of wear that can occur on a material’s surface. Common wear modes include: abrasion, adhesion, etc Wear mechanisms describe the processes or phenomena that result in material removal or surface damage during wear. These mechanisms are often more detailed and specific than wear modes. Common wear mechanisms include: microcutting, ploughing, spalling, surface fatigue etc ---
**Author:** ![Matej](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Matej](https://prepomax.discourse.group/u/Matej)\ **Post date:** [June 17, 2024, 9:09am UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/15 "2024-06-17T09:09:28Z")
Ok, I understand. I don’t think a simulation can predict such things, but please correct me if I am wrong. We are using the Archard wear model, which does not have these elements integrated, so probably another model would be necessary, and additional material data would be needed. ---
**Author:** ![Amos](https://avatars.discourse-cdn.com/v4/letter/a/ebca7d/32.png) [@Amos](https://prepomax.discourse.group/u/Amos)\ **Post date:** [June 19, 2024, 11:37pm UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/16 "2024-06-19T23:37:21Z")
Yes you are right a different model would be needed ---
**Author:** ![Matej](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Matej](https://prepomax.discourse.group/u/Matej)\ **Post date:** [June 20, 2024, 6:55am UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/17 "2024-06-20T06:55:01Z")
And are there any other models that can predict what you wrote? ---
**Author:** ![Amos](https://avatars.discourse-cdn.com/v4/letter/a/ebca7d/32.png) [@Amos](https://prepomax.discourse.group/u/Amos)\ **Post date:** [June 20, 2024, 8:09am UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/18 "2024-06-20T08:09:16Z")
#MSC hexagon software come close to doing it but if not fully improved At the moment, but professor Roland Larsson of Lulea university is trying to work on something that can do this work. , for if you do the simulation of a “ball-on plate” in the laboratory using a tribometer, you create a wear track or a wear scar… From which you can measure mass loss, wear volume, visualize stresses, friction coefficient,…but for morphology analysis we take it to the microscope for analysis, etc. Maybe this document will help: [https://drive.google.com/file/d/14V21NRuHvgsBpWj2mT–mi1zLQIN81iZ/view?usp=sharing](https://drive.google.com/file/d/14V21NRuHvgsBpWj2mT--mi1zLQIN81iZ/view?usp=sharing) ---
**Author:** ![Matej](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Matej](https://prepomax.discourse.group/u/Matej)\ **Post date:** [June 20, 2024, 6:59pm UTC](https://prepomax.discourse.group/t/archard-wear-simulation-using-prepomax-v2-0-11-dev/1782/19 "2024-06-20T18:59:28Z")