On Nonlinear Deformation Behavior of Disk Spring

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  • 皿ばねの非線形変形挙動について

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For estimation of the nonlinear load-deflection behavior of the disk spring which is subjected to compressive load, an approximate equation presented by J. O. Almen & A. Laszlo has widely been used. Another approximate equation was also proposed by G. A. Wempner as a more accurate solution. Since these two equations are both induced from some aproximate assumptions, mechanical designers using disk springs should know the degree of errors of the above-mentioned two equations. In this paper, some numerically accurate examples for the load-deflection relation of the disk spring are obtained by applying the finite difference method to solve the fundamental differential equations of the problem of the disk spring, and they are compared with the results obtained by the above-mentioned two equations. Also experiments are carried out, and their results are compared with those by the above three theoretical methods. From results of such comparisons some prospect about the accuracy of the above-mentioned two equations can be obtained.

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