i have an abaqus model which consists of beam to column steel joints with six bolts, and an imposed displacement of 200mm in the beam end.
I want to extract the tension forces in bolts in order to draw (bolt force-moment) curve
for the preloaded and non preloaded bolts.
Can anyone show me the procedure please?
To extract the tension forces in bolts and draw the bolt force-moment curve for the preloaded and non preloaded bolts, you can follow these steps:
- First, you need to define the bolt load in Abaqus. You can do this by using the Bolt Load option in the Interaction module. You can specify the magnitude and direction of the bolt load, as well as the bolt region and the reference region. For preloaded bolts, you can apply a positive bolt load to simulate the tightening force. For non preloaded bolts, you can apply a zero or negative bolt load to simulate the loosening force. You can also define different bolt load steps to vary the bolt load during the analysis. For more details on how to define bolt loads, you can refer to [this documentation]1.
- Next, you need to request the output of the bolt forces in Abaqus. You can do this by using the Field Output Request option in the Output module. You can select the Bolt forces variable from the list of available variables, and choose the frequency and domain of the output. You can also request other variables that are relevant to your analysis, such as displacements, stresses, strains, etc. For more details on how to request field output, you can refer to [this documentation].
- After running the analysis, you can view and plot the results in Abaqus/Viewer. You can use the Query tool to display the values of the bolt forces at any point or region of interest. You can also use the XY Data tool to create XY plots of any variables that you have requested as field output. For example, you can plot the bolt force versus the moment at a specific location or for a specific bolt load step. You can also export the XY data to a file for further processing or visualization. For more details on how to use Abaqus/Viewer, you can refer to [this documentation].
for more information :
: https://classes.engineering.wustl.edu/2009/spring/mase5513/abaqus/docs/v6.6/books/usi/pt04ch21s02s02.html : https://classes.engineering.wustl.edu/2009/spring/mase5513/abaqus/docs/v6.6/books/viw/default.htm
Le Liu my question is the following: what section area should I take into account when calculating the force in the bolts, and what force or stress should I choose in the history output, knowing that I've already done the following procedure and the results weren't correct: I drew the stress S33 in the circle of the bolt stem surface and multiplied the values by the value of the surface which is pi*(r)2
Yousef Bahrambeigi thank you for this detailed answer however which output should i choose the RF or the stress to get the bolt tension forces?
Engr. Tufail it's in turkish, i couldn't understand what he is explaining...
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