Unformatted text preview: pert 334 S. Samper, J.-P. Petit and M. Giordano 1997], we can find analysis of bearings behaviour in order to know their stresses and we had to build the 5D analysis of displacements corresponding to Hertz stresses and force torsor. We made the assumption that each of its parts were perfect. We set the internal clearance of the ball bearing. Then, we compute a set of extreme displacements with contact conditions, and next under stress. A ball bearing has one kinematic degree of freedom. Thus, the clearance domain might be represented in 6D, or at least in 5D. We have built it for the general case, but we can show it in 3D by choosing the good components of the clearance torsor. If we affix the outer ring and move the inner ring, like in figure 3, we can observe the displacement in a specific plane and reduce the components to 3 real numbers. In the assembly analysis, we always use the 6D domains. If the domain is built in 3D and the other screw parameters are undefined (kinematic,…) the corresponding axis is like a 5D cylinder axis in 6D (any cut on this axis gives the same 5D feature).
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- Spring '10
- The Land, ........., Computer-aided design, Joseph K. Davidson, M. GIORDANO