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Effect of mandrel material properties and dimensional deviation on crimp quality-1
- Jan 07, 2019 -

Effect of mandrel material properties and dimensional deviation on crimp quality

The composite insulator core rod and the metal fitting are connected by a crimp connection interface structure, and the structure is realized by the metal plasticity variable to promote the elastic deformation of the core rod to generate static friction force. The amount of elastic deformation of the mandrel is not only related to the pressure generated by the plastic deformation of the metal, but also depends on the elastic modulus of the mandrel and the Poisson's ratio of the mandrel. The mandrel material is composed of fiber and resin. The elastic modulus and Poisson's ratio of the matrix of the two materials are quite different. The elastic modulus and Poisson's ratio of the mandrel will fluctuate greatly with the difference of the composition ratio of the materials. It also affects the interface assembly performance parameters accordingly, which must be analyzed and estimated.