The force analysis of the tensioned diaphragm found that: when the four sides are tensioned and the load is evenly distributed, the diaphragm will not break and fail; if the load distribution is uneven, it may be in the process of pulling the diaphragm. There was a phenomenon that several diaphragms were pulled off.

　　When the center is misaligned for a long time, if the center deviation exceeds the compensation range of the coupling, the diaphragm coupling will experience peak torque, of which 4 groups of compressed diaphragm groups are unstable, and the other 4 groups are under tension The diaphragm will bear all the torque, and the tensile force will be doubled.If the diaphragm is in a non-uniform stress state for a long time, the stress on the inner side of the bolt holes at both ends of the diaphragm will exceed the curved clothes of the material, causing it to be broken and damaged. As the number of load-bearing diaphragms is gradually reduced and the stress is uneven, the original stress The diaphragm with lower stress will also be broken, and then the entire group of diaphragms will be broken.

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