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General Mechanical

General Mechanical

Topics related to Mechanical Enterprise, Motion, Additive Print and more.
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  3. Frictional contact

Frictional contact

    • February 11, 2025 at 9:19 pm
      Zwernjayden
      Subscriber

      I am trying to model 1/8th of this bolted flange for this pressure vessel. It involves a 45 degree spacer in contact with an angled 3D printed inconel flange. I am wondering what coefficient of friction I should be using. Through research, most people recommend a value .05-.1 for metal contact. Why wouldn't you use the actual coefficient of friction instead? I know for steel-steel it's significantly higher. Is this about taking a more conservative approach, or is the coefficient ANSYS uses different from the coefficient of static friction. If I choose a low value (.1) the stress is over 60ksi in the spacer. If I use a higher value (.6) its 16ksi.

    • February 12, 2025 at 12:11 pm
      Ashish Khemka
      Forum Moderator

      Hello,

      The coefficient of friction is an experimental value that the user must determine. Generally, a low value is used because of the presence of lubrication in many applications. However, you can choose the value based on your application. Please refer to the following document for more details.

      PowerPoint Presentation

      Regards,

      Ashish Khemka

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