Abstract
The general technics to analyze the plastic working of the pressure sensing elements were already reported in previous transactions. In this paper the processes and the results of the analysis of the metal diaphragm based on the general technics are reported.
There are several conditions in the press working of the diaphragm. The analysis is easy under the conditions that one or both of the inside or outside edges of the diaphragm are free. The circular elongation εc(r) and the radial elongation εr(r) are connected with the inclination angle θ of the wave, the indideto-outside radiuses ratio ρ. The maximum calculated elongation εcm is shown in the graphs.
The problem about the buckling on the outside of the diaphragm is complicated under the condition that the inside edge is fixed and the outside edge is free. The analysis concerning this problem is described.
The method of transformation by means of centrifugal force is adopted in order to solve the non-linear problem under the condition that the both inside and outside edges are fixed. The result of the analysis is clear and elegant.The experiments to measure the elongation εc were done. The result of the experiments shows the mixture of the conditions that the edges are fixed and free.
