A COMPREHENSIVE METHOD FOR COMPARISON OF OPTIMAL STRUCTURAL AND MANUFACTURING SOLUTIONS FOR METAL-COMPOSITE JOINTS CONSIDERING DISTINCTIONS OF THEIR MANUFACTURE

Ігор Михайлович Тараненко

Abstract


A generalized qualitative method for selecting variants for “metal-composite” joints for light aircraft requiring minimization of joint mass is considered.

A review of modern scientific and technical literature in this field has shown the relevance of the problem of selecting the type of joints. At the same time, existing selection methods require high accuracy. They do not contain quantitative information about the technology of manufacturing joints, which significantly affects their efficiency and quality.

The following three design options for joints with transverse fasteners were selected for analysis: monolithic pyramidal microelements made on a metal tip, cylindrical microelements installed on the tip surface by welding or pressing, and sheet microelements made on an intermediate metal strip, which in turn is attached on the tip.

The comparison of options was carried out according to the following groups of properties: weight, structural strength and technological features.

It should be noted that in previous studies, a quantitative method was developed and used to compare structural and technological solutions of “metal-composite” joints, with direct calculation of the values of the quality indices of the processes of preparation for production and manufacturing of joints. This method requires a sufficient amount of specific reference data and time for calculations. Therefore, the development of a qualitative method for comparing the joints structural-manufacturing solutions is quite relevant.

The purpose of the work is to increase the efficiency and quality of joints while minimizing several properties depending on the goals (volume) of production, the purpose of products, reducing costs and time for manufacturing and preparation for production.

The main tasks of the study are reduced to qualitative and quantitative assessment of target indicators according to the selected design options, materials used and the complexity of the manufacturing process.

The research method is a complex system analysis.

As a result of the study, relevant conclusions were drawn regarding the priority of a particular connection option for different materials and production conditions.


Keywords


metal+composite joint, options for structural and manufacturing solutions, manufacturing technology, comparative analysis

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DOI: https://doi.org/10.32620/oikit.2025.105.10

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