Assuming that you're wanting to figure out how to do something in Abaqus, you might want to post over in forum799.
However, you might want to go into more detail in that forum about exactly what you're hoping to simulate. Generally, I don't like to screws to move once they've been tightened.
Patricia Lougheed
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i try to simulate the operation of tying a screw end see the efect of parameters like speed end friction. the problem that i dont know how give the screw the helicoidal motion.
make a reference point, apply a displacement and a rotation condition to it in your BC's in the second step and then add a constraint between your reference point and whatever feature on the screw
this seems like a highly axisymmetric problem to me.. you should consider simplifying your geometry, especially if you're going to play with friction.
If you cannot figure out how to make the screw motion I think you're going to have a lot of trouble setting up the contact ...
Depending upon the thread on the screw or bolt you have, the thread pitch, it advances some amount per revolution. You must look this up or determine it for your screw. Then advance the screw “x” distance for each degree of revolution. Are you an ME or a Mech. Tech person? If not you a skating on thin ice posting here.
The screw itself must be aligned to the top & right plane and be unrestricted to rotate. Then add the nut in the same fashion. The trick is to position the nut on the threaded screw PRIOR to adding the screw information in Motion.
Then spinning the screw makes the Nut move up and down the threaded shaft. Easy.
Good luck with it.
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada
