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Modeling of Bolts

ron.kunz
Dear all,
I have a big assembly and want to model bolts in the complete assembly. What is the best and accurate way to model this.
Cbar analysis is accurate enough to analyse the bolt forces. Boltstress is of secundair interest.
Are there examples for these bolts?
In addition bar orientation for this CBAR property, how can this best be modeled?
 
Thanks in advance
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  • 0
    Your bolts look fine, although note that one of your RBEs is not centred in its hole, so the bolt there doesn't run between hole centres.
     
    For the bolt forces, you should request element force output (this is not present in the mode attached above). You should then see "Bar Forces, Translational" in your results in Patran. The output is in the element coordinate system, so axial force is the XX component, and the shears are YY and ZZ. You can compare the plots with the f06 output if you want to check this:
    ScreenShot2098
    ScreenShot2097
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  • 0
    Your bolts look fine, although note that one of your RBEs is not centred in its hole, so the bolt there doesn't run between hole centres.
     
    For the bolt forces, you should request element force output (this is not present in the mode attached above). You should then see "Bar Forces, Translational" in your results in Patran. The output is in the element coordinate system, so axial force is the XX component, and the shears are YY and ZZ. You can compare the plots with the f06 output if you want to check this:
    ScreenShot2098
    ScreenShot2097
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