Mechanical Behavior Performance of Gaskets

Load-Deformation Behavior

Today, we continue to introduce the mechanical behavior of gaskets - load-deformation behavior.

Relationship between σ_g and δ_g

What is the relationship between the stress σ_g and deformation δ_g  of a gasket? Observing the shape of their curve can reveal many key patterns.

The mechanical properties of gaskets in practical applications do not follow the ideal elastic law. The relationship between stress σ_g  and deformation δ_g  cannot be accurately described by a linear elastic model, but shows significant nonlinear characteristics. This feature makes the mechanical response of gaskets more complex, requiring precise analytical methods for research.

Picture: Relationship between σ_g  and δ_g 

It can be seen from the relationship curve of σ_g  and δ_g  that they are not in a simple linear relationship. In different stress stages, the speed and amplitude of the gasket's deformation response are changing. In the initial stress stage, with the increase of stress, the deformation may grow rapidly; when the stress reaches a certain level, the deformation growth rate will slow down or change. This change rule intuitively reflects the real characteristics of the gasket's stress process, breaking the simple cognition that "force and deformation change proportionally".

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The nonlinear response of gaskets is jointly affected by various factors such as material and structure. Mastering this relationship curve is of great value for engineering applications: engineers can judge the state of the gasket under different loads through the curve. For example, determine whether the gasket has reached an appropriate compression amount at a certain stress value, or evaluate the possibility of over-compression. This analytical basis can provide a scientific reference for the selection, installation and load control of gaskets, ensuring that they perform stably during use.

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