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Unformatted text preview: 1 then the limit is overloaded. In this paper, we only present UR for joints, but the aim of this concept is to be used in a tolerance analysis with different kinds of technological limits such as life span, static forces, or stresses. Then it will be possible to compare different kinds of limits, because the 0 and 1 have the same signification for all. We define a set of domains parameterized by UR ranging from 0 (rigid clearance domain) to 1 (upper limit clearance domain). When UR is 0 the corresponding clearance can be nil or positive, depending on the mounting conditions (pre-stressed or not). Here, the analysis is made in an assembly process, thus forces are not external forces but assembly forces. A joint is a model, and we can call joint a component like ball bearings or gears as shown bellow. As UR is presented here for joints, we can also define UR for deviations. 4. BALL BEARINGS JOINT A ball bearing is described by its geometrical parameters and by the material properties of the corresponding steel. In literature [Harris 1991], [Hernot et al. 2000], [Hou...
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This note was uploaded on 08/03/2010 for the course DD 1234 taught by Professor Zczxc during the Spring '10 term at Magnolia Bible.
- Spring '10
- The Land