How to get output in abaqus?

[Mitzs]

Hello guys, it would be kind if someone help me with abaqus. So i am new to this software.
I am modelling a Endplate bolted connection for steel structures.I have provided loading in 2 steps, 1st with bolt pretension of 90 kN and in 2nd with monotonic displacement of 4mm/s. So my ultimate goal is to find bolt force after analysis, so how to get bolt forces. And let me tell you i am done with everything like submitting job and analysis. i just want to know to get bolt force in a bolt can i get directly the total force or i have to sum all the force for each element of a bolt, and if so there will be 100s of elements created for a bolt so how to do it?

 

[FEA way]

How are you modeling the bolts ? As solid parts or in a simplified way (beams/connectors) ? Are you using pre-tension section for preload ?

 

[Mitzs]

How are you modeling the bolts ? As solid parts or in a simplified way (beams/connectors) ? Are you using pre-tension section for preload ?

I am designing bolt as a solid.Also I wanna ask is my loading is in two steps, 1st pretension of 90kN and 2nd monotonic displacement of 4mm/s.For 2nd step i need to keep applying till one of the part completely yields but what should be the time duration 1 or more?And ultimately I want the bolt force and total applied force as output.how to get it?

 

[FEA way]

Then you can request force output from pre-tension section reference node (DOF 1) or use *SECTION PRINT. The duration of the step doesn't really matter if it's static and with no rate dependence. Time is just a measure for load incrementation then, not a physical quantity. So you can play with amplitudes and incrementation as you want.

Just keep in mind that you should freeze preload in the second step.

 

[Mitzs]

Then you can request force output from pre-tension section reference node (DOF 1) or use *SECTION PRINT. The duration of the step doesn't really matter if it's static and with no rate dependence. Time is just a measure for load incrementation then, not a physical quantity. So you can play with amplitudes and incrementation as you want.

Just keep in mind that you should freeze preload in the second step.

After analysis i get mises stress with which I can get bolt force.But i also need total applied load on bolt for which I selected output of reaction force and total force but I am getting both values as zero.what could be the thing?

 

[FEA way]

What region did you choose for this output ? You should pick Bolt load as Domain when defining the history output request. In keywords, you just need to choose the reference node of the pretension section for output.