### Restrincting to one of two solutions

Posted:

**Mon Feb 22, 2016 8:16 pm**Hello,

I'm trying to simulate a 4-link suspension in CaRMetal, but I'm having trouble with a constrain that has two solutions.

In the attached (CaRMetal 4.0.2) file (also at http://rf.com.br/pub/suspension.zip), the upperArm segment end point can be defined by the intersection of upperArmLengthSphere with axleAnchorsDistanceSphere with the plane P84-P85-P86.

The problem is that there are two points where these elements intersect, so when we move the axleLowerAnchor up and down, the upperArm "jumps" from one solution to the other.

Can someone point me to a way to restrict the intersection to a single solution?

Thanks!

Joao S Veiga

I'm trying to simulate a 4-link suspension in CaRMetal, but I'm having trouble with a constrain that has two solutions.

In the attached (CaRMetal 4.0.2) file (also at http://rf.com.br/pub/suspension.zip), the upperArm segment end point can be defined by the intersection of upperArmLengthSphere with axleAnchorsDistanceSphere with the plane P84-P85-P86.

The problem is that there are two points where these elements intersect, so when we move the axleLowerAnchor up and down, the upperArm "jumps" from one solution to the other.

Can someone point me to a way to restrict the intersection to a single solution?

Thanks!

Joao S Veiga