Contents include

This article describes the application of a planar disc do photoelastic dynamometer measurement methods and easily find the roller bearings rolling radial contact force (or nominal load) the size and distribution. Contents include: an experimental model for the contact should always comply with the basic similarity criteria; 2 photoelastic model bearing the fundamental basis for processing and assembly and experimental implementation; 3 by the stress analysis results of a both simple and effective and reliable disc dynamometer measurement methods; 4 shows in a different space, loading or support case bearing radial stiffness force distribution of the nineteenth set of experimental data; 5 experimental results and calculated values ​​were very limited agreement without verification. Comparison with engineering calculations, the situation is very different, a preliminary analysis indicates the project through calculation method such assumptions is not in line with the actual situation, the application of engineering calculations to consider its limitations and approximate nearly
2 roller zys precision bearing axial load per unit thickness of the radially outer '--- "V - Mountain PH (abbreviated unit radial force): Helicopter main components (such as paddle Yi) of use, the total outer radial bearing load, mainly around the propeller blade depends largely on their operating characteristics of the bearing assembly. "'. The centrifugal force generated when the rotation axis N. , Located on the roller bearing axial force given much attention in the past,Applications in aviation four-point contact ball bearings. In actual use, it will become two-point contact, that contact with 1,3 points, or 2,4 point contact. After carrying the ball bearing and the bearing inner and outer rings form two contact surfaces, through the outer ferrule compression load transmitted to the inner ring of the ball. From the mechanical analysis perspective, bearing with external load changes, ball bearing race with the contact point location and access