Limiting the function operation 2

[Frankyy]

Hi, anyone know an idea how to limit this force function that it only works when the the slider is on the way back, in this mechanism?
I tried to use the "IF" function but I couldn't find a solution...
Maybe is some other way to implement this type of force?



Simulation:
[youtube yIXR2-MVyR8]



Force limit needed - black arrow mark:

Force function:

Force values / slider position:

 

[GregLocock]

what did your IF look like?

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

[Frankyy]

I wanted to do it like in this example, insert DM (..., ...) instead of VR (..., ...) and then eliminate the force between the new markers added, in the unwanted range of that force

IF( DM(checkmarker1, checkmarker2) : 0 , 0 , AKISPL(DM(MARKER_18, MARKER_19),0, SPLINE_1,0)) or similar...

Sorry for my little knowledge, I am a beginner user of MSC Adams

 

[GregLocock]

No you don't want to use DM in your IF test, you need translational velocity, assuming that all this happens on the X axis

IF( VX(checkmarker1, checkmarker2) : 0 , 0 , AKISPL(DM(MARKER_18, MARKER_19),0, SPLINE_1,0))

So this says if the velocity between those two markers is <=0, F=0
esle F=whatver your spline gives

The chances are you might need

IF( VX(checkmarker1, checkmarker2) : AKISPL(DM(MARKER_18, MARKER_19),0, SPLINE_1,0),0,0)

depending on directions

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

[Frankyy]

I misunderstood this function.
Yesssssss, it's work!
Thanks You for Your HELP!

This Thread can be closed


IF( VX(CHECK_MARKER_1, CHECK_MARKER_2) : 0 , 0 , AKISPL(DM(CHECK_MARKER_1, CHECK_MARKER_2), 0, SPLINE_1, 0) )


[youtube 6zzJiS3OFXU]

 

[GregLocock]

Good job

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?