The relationship between the displacement of metal bellows and other elastic elements in a specified boiling and the acting load is called the elastic property, and the displacement and load should be stored in the elastic range of the element material. Its elastic properties depend on the structure and loading mode of various elastic elements. The elastic properties of the element can be linear or nonlinear, which can be divided into increasing and decreasing properties.

The elastic characteristic is a main performance index of bellows and other elastic components. Elastic elements used in instruments and measuring devices are generally designed to have a linear relationship between the output of the elements and the measured parameters (loads). In this way, a simple transmission amplification mechanism can be used to equalize the scale of the instrument.

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