Learning Forum

[javat33489]

Hi all. I researched the topic of wear and tear. But I have many questions that are not clear. I studied the works of the authors, as well as the presentation and work of DYNALOOK and DYNAMORE:

 

So, my task is a drill and an LNG die. The drill rotates and passes through a 4 mm thick die. I need to understand how much the drill is deformed after passing 20,000 mm of such a die.

Let's add the wear condition in order and look at my questions.

1. Turn on MPR=2 in the current contact.

2. Add the CONTACT_ADD_WEAR card. In this map we indicate three parameters P1, P2 and P3 (K, Hs, Hm). The parameters for the slave and master are indicated there. But I don’t understand what should I indicate there for drilling?

3. Add a DATABASE_EXTENT_INTFOR and DATABASE_BINARY_INTFOR map to record data.

4. Add the INTERFACE_SPRINGBACK_LSDYNA card. Do we indicate only the number of cycles in the NCYC column? That is, this number is how many times will my drill pass through my 4 mm thick die? So I can specify 5000 cycles (=20000 mm)?

5. Add the INITIAL_CONTACT_WEAR card. WHAT needs to be filled in columns NX, NY and Nz? This kata is needed to record each calculation with a new name for the dynian file. Do I need this when calculating drilling? How to use this card correctly in my case?

6. Prepost-Wear App is used to view the results. There are two methods for viewing the results, using the scale factor curve and maximum wear. Which one is right for me to view the drilling task? How to choose the right one and how to check how the drill behaves after 20,000 mm of drilling?

7. Do you need any additional data on the material? Do I need to add material curves to the CURVE map? If necessary, which ones?

Thank you.

[Hui Liu]

Given the level of your questions - Ansys employees cannot help you on the public forum. You are welcomed to submit a support request if you are a commercial user, either to Ansys support or to your support provider. If you are an academic user - reach out to your academic account manager to discuss if you can be supported outside of the forum.

[javat33489]

Sorry. These are basic questions. You do not need to contact support to answer these questions. These data are not indicated in the tutorial, which means you must answer them. In addition, any user may have such questions, so the answers will be available to everyone. Thanks for the answer.

[Ushnish Basu]

Please note that even in commercial support, we cannot advise on which parameters values will be appropriate for your specific situation. Your general questions should be answered by the Remarks in the Keyword Manual under the relevant cards, and in the paper and presentation you reference. Beyond that, we cannot answer specific questions about a particular case