The elastic modulus represents the ability of a material to resist elastic deformation. The larger the elastic modulus, the greater the stiffness of the material and the stronger its ability to resist elastic deformation.
The vast majority of mechanical parts work in an elastic state, and excessive elastic deformation is generally not allowed during operation. Therefore, there are certain requirements for its stiffness. The way to increase stiffness is not only to increase the cross-sectional area of the part or change the cross-sectional shape, but also to increase the elastic modulus of the material.
In textile machinery, many parts need to consider stiffness. For example, the stretching rollers of drawing machines, roving machines, and fine yarn machines, if these components have poor rigidity, they will undergo elastic deformation, affecting stretching and reducing product quality.
The elastic limit represents the maximum stress value that a material can withstand without plastic deformation, and is an important basis for the design and selection of parts that do not allow for trace plastic deformation during operation, such as precision elastic components.