Design method of expansion coupling sleeve for solving stress concentration and light weight

Abstract

The invention relates to a design method of an expansion coupling sleeve for solving stress concentration and light weight. The method mainly solves the technical problems that an existing expansion sleeve size design method is insufficient in reliability, materials are wasted and the like. The specific method comprises the following steps of 1) according to an expansion coupling sleeve transmission torque requirement, a material yield strength requirement and a light-weight minimum mass requirement, determining the design indexes as follows the minimum contact pressure p1min of the main shaftand the shaft sleeve, the maximum equivalent stress Emax of the whole machine and the minimum mass mmin; 2) determining the design parameters of the expansion sleeve according to the design indexes,and obtaining the sample data by utilizing orthogonal test design based on finite element simulation; 3) concluding the sample data, taking the design index as a function dependent variable, taking the design parameter as an independent variable, obtaining an objective function by utilizing a Kriging method, and constructing a prediction model which meets the requirements of torque, equivalent force and minimum mass; 4) obtaining a multi-objective optimization function through a simultaneous prediction model, and obtaining a final design parameter by solving a second-generation genetic algorithm (NSGA-II).

Description

technical field [0001] The invention relates to a design method for a stress-concentrated, lightweight expansion-tight coupling sleeve, which belongs to the technical field of mechanical transmission connections. Background technique [0002] Expansion coupling sleeves (expansion sleeves) are widely used in metallurgy, new energy, machine tools, textiles, mining machinery and other fields as the basic coupling parts of mechanical transmission systems; this structure can transmit various forms of load and compound load, relying on friction transmission Overload skid, protect equipment from damage; easy to disassemble and have good interchangeability. At present, the traditional expansion sleeve design method ignores the problem of stress concentration, lacks design requirements for lightweight, and the design results have problems such as insufficient reliability, waste of materials, and high manufacturing costs. Contents of the invention [0003] The purpose of the presen...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problems of insufficient reliability, material waste and high manufacturing cost in the existing size design method of expansion sleeves, and provide a stable and reliable expansion sleeve for solving stress concentration and lightweight expansion that improves design and manufacturing efficiency. Design method of tight coupling sleeve

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