An Analysis of the Elastic and Plastic Deformations of Machined Surfaces in Contact : 5th Report, Formulae of Deformations of Plane Joints Machined by Various Methods for Practical Use

抄録

The elastic and plastic deformations of plane joints were analyzed in previous reports and it was revealed that the theoretical results agreed with the experimental data. The calculations of these deformations, however, were very burdensome. Therefore, in this report, the formulae for practical use of these deformations were considered. The formulae for practical use are ^δE=A_e{(p+p₀)^0.09-p₀^0.09} ^δS=A_s{(p+p₀)^0.18-p₀^0.18} where ^δE, ^δS: elastic and plastic deformation, p: mean interface pressure, A_e, A_s, p₀: constants. In this report, the methods to determine these constants from contact area, hardness of materials in contact and asperity heights were developed. Furthermore, a FORTRAN program to determine these constants from the above-mentioned factors and the machining methods of surfaces was presented and the notices to apply these formulae to various contact conditions were proposed.