Pre Tension for Bolts

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hi,

I had a course for Hypermesh with the Abaqus-solver. We build screws in Hypermesh and used the Pre Tension Section to get tension on the screws. Now I´m using Radioss and searching for something that could be used as easy as the PTS tool.

Thanks, Daniel

Tagged:

Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2010

    Daniel,

    For Radioss block format you have to use spring element. Use cardimage p32_SPR_PRE (/PROP/SPR_PRE) for the property. Then use spring2n to define the spring element. The force in spring elements is the pretension force.

    If you are using Radioss bulk you have to use contacts with correct option to allow two contacts separated by a distance to come closer at the end of the simulation. The pretension force is based on the gap (PL/AE = delta).

    Thanks

    Ram

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2012

    RKD, can you give an example of 'attractive contact' that creates the tension? The help for pretensioned bolt is qualitative but an example for linear and non-linear (nlstat) would be most helpful.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2012

    Hi,

    just in case you are using RADIOSS Bulk format and speak German: There was recently a Webinar on 'Modellierung von Schraubenvorspannungen in RADIOSS mit HyperMesh'. The recording is available her:

    '>http://www.altairhyperworks.de/html/de-DE/BestPractice_Recordings/2012/12_Radioss_Schraubenvorspannungen_Oct26_index.html

    Regards

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited January 2013

    Hi stefan,

    The webinar is superb ,thanks for the link.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited January 2013

    just in case you are using RADIOSS Bulk format and speak German

Categories