Avoid mistakes with the units in Abaqus - Coherent systems of units

[@KartheeKSoNTI]

I appreciate you bro because in all the videos I have seen so far on abaqus. People take a problem and show how to solve it without making us understand why and how it works. First time I am seeing something that make sense in abaqus. You have no idea how many are going to get benifit out of it.

[@tecnodigitalschool]

Thank you very much! As you say, I find a lot more convenient to understand than to just copy/paste, learn by heart or repeat systematically.

[@hosnizegadi4253]

Hello, thank you for that interesting video. I hope to know the unit used for the magnitude of the bolt load, is it in N or in N*m (force or couple). Best regards.

[@tecnodigitalschool]

It depends on what type of force you measure or apply. The pretension of a bolt is generally measured as a tensile load, therefore it is in Newtons. However, to reach that pretension, you will have to apply a certain torque (N*m) using a wrench or whatever other tool. In most simulations, you will directly define the pretension load of the bolt (this is an example in Abaqus docs: wufengyun.com/texis/search/hilight2.html/+/exa/ch05s01aex119.html?CDB=v6.14#d0e55371)

[@hosnizegadi4253]

Thank you very much, so if I have to apply 10 KN*m on a bolt, I have to determine the corresponding force and define the magntude in (Newtons). Thanks again.

[@tecnodigitalschool]

@@hosnizegadi4253 That's it! You can look up the conversion factor in tables or using some analytical expressions. I made a quick search and found this www.engineeringtoolbox.com/bolt-torque-load-calculator-d_2065.html

[@hosnizegadi4253]

@@tecnodigitalschool I got it very well. All my thanks. Best regards.