@martinbo
@Monster
@KiwiRob
This is a typical case of theory vs application. After a three hours long discussion and a few quick analyses with three friends of mine, two civil and one mechanical engineers we concluded the following:
The transverse leaf spring does NOT work as an anti roll bar.
And that's why.
1. There's a reason why the Corvetter has a rear anti-roll bar.
2. While in theory I assumed that the two clamps, which connect the transverse leaf spring will allow rotation, in reality they are not that flexible, allowing minimal rotation. Therefore, while the leaf spring works like the theory of post #104 shows, in application it's quite different. Only minimal rotation is allowed by the clamp, therefore only minimal load is transferred to the other wheel.
3. I run a few simple analyses of the leaf spring using linear finite elements and even with full rotational freedom, the load (in terms of displacement) transferred to the unloaded wheel is a full order less than the load on the loaded wheel.
4. As the mech engineer of the gang explained, there are a few advantages of having a different set-up for the anti-roll bar, instead of using the leaf spring for both a spring and anti-roll bar. But I am not sure I understood exactly what he said, let alone be able to explain it here. I hope to be able to do that later today.
5. Even though the leaf spring will deform like my figure in post #104, the rigidity of the two clamps [how tightly they are screwed] as well as their design, will counter balance the rotation that the leaf spring wants.
5a. Something I noticed only now. Take a look at how the upper clamp is offset to the lower one. This introduces a double couple of forces, a moment essentially, that works as a reaction moment, reacting to the rotation at the support point. It's a partial fixity connection.
5b. The difference with what I wrote in post #104 is that due to the way the clamps are designed, while the leaf springs wants to rotate freely at the points of the two supports, it will not rotate as much. The design of the clamps will oppose to the said rotation, but not completely block it. This reduces the load transferred to the other wheel.
5c. The main difference of theory vs application is how much load is transferred to the other wheel. For the theorist (me) transferring load was enough to prove that this also works as an anti-roll bar. For an applicationist, the calculated load was not enough for the leaf spring to be taken seriously as an anti-roll bar as well.
Conclusion: Volvo should put an anti-roll bar.
Sorry for the confusion.
