Structural Linear Simulation for Bolt Clamping

Jocelyn Webster
Jocelyn Webster New Altair Community Member
edited January 2023 in Community Q&A

I'm looking to determine if the clamping force of a bolt is enough to prevent a piece from sliding down. See the sketch for visual.

The bolt has a collar on the inside of the shape, and a washer on each face outside. Tightening the bolt would prevent the green section from sliding down when loaded from above.

How do I set up this simulation?

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Answers

  • Girish Mudigonda_21018
    Girish Mudigonda_21018
    Altair Employee
    edited January 2023

    V2022.1 support sequential loading which can be used to estimate bolt slippage. It is available under the advanced version of desktop product.

  • Jocelyn Webster
    Jocelyn Webster New Altair Community Member
    edited January 2023
    Girish Mudigonda_21018 said:

    V2022.1 support sequential loading which can be used to estimate bolt slippage. It is available under the advanced version of desktop product.

    Thanks for the response. Any idea if this is available in the online version? I'm using OnShape as my CAD platform (SimSolid Online integrates directly into OnShape).

  • Girish Mudigonda_21018
    Girish Mudigonda_21018
    Altair Employee
    edited January 2023
    Jocelyn Webster said:

    Thanks for the response. Any idea if this is available in the online version? I'm using OnShape as my CAD platform (SimSolid Online integrates directly into OnShape).

    For the cloud version, there is a workaround, see below.

    1) Create a loadcase with just bolt tightening using torque/axial force and capture the number of nut turns from the bolt forces output.

    2) Create a second loadcase with operating load and bolt tightening (using number of nut turns). This should give you an estimate of the final forces in the bolt to understand if the bolt slips.

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