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Limiting the function operation
2

thread823-476072

Limiting the function operation

Limiting the function operation

(OP)

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:




Force limit needed - black arrow mark:




Force function:




Force values / slider position:

RE: Limiting the function operation

(OP)
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 hairpull2pc2



RE: Limiting the function operation

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: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?

RE: Limiting the function operation

(OP)

Quote (GregLocock)

I misunderstood this function. banghead
Yesssssss, it's work! rofl2
Thanks You for Your HELP! thanks

This Thread can be closed smile


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




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