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simulation of screw

simulation of screw

simulation of screw

(OP)
i need to simulate the motion of a screw with abaqus, whou can help me

RE: simulation of screw

A problem correctly stated is half solved.  What is it exactly that you are trying to accomplish?

It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.

RE: simulation of screw

A real screw is almost always better than a simulated screw, whether you do it with abaqus or by some other method.
 

RE: simulation of screw

Seiff

Assuming that you're wanting to figure out how to do something in Abaqus, you might want to post over in forum799: ABAQUS: ABAQUS FEA Solver.

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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RE: simulation of screw

(OP)
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.

RE: simulation of screw

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 ...

RE: simulation of screw

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.

RE: simulation of screw

(OP)
yes thas is,  

RE: simulation of screw

This is quite easy to do in SolidWorks.

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

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