АНАЛІЗ ТЕРМОРОЗМІРОСТАБІЛЬНОЇ НЕСУЧОЇ КОНСТРУКЦІЇ ПРИЛАДУ КОРИСНОГО НАВАНТАЖЕННЯ КОСМІЧНОГО АПАРАТА

Abstract

The basic provisions of the engineering procedure for development of shell cylindrical structures made of composite materials are presented in this paper. Development of shell cylindrical structures made of composite materials occupies a prominent place in development of structures made of composite materials. Such structures are commonly used as bearing members of optical-electronic equipment and must ensure a high quality of its operation.This procedure was developed for physical-mechanical characteristics prediction of composite structures. This work is topical because composite material has well-marked anisotropy of its characteristics and procedure of development of structure made of traditional metal materials cannot be used in this situation.The main feature of this work is application of analytical method of designing dimensionally stable structure. This method is the basis for the design engineering procedure for shell cylindrical structures made of composite materials. Applicability of the procedure was confirmed by structural analyses of the structure with the use of finite element method and dimension-stability tests of cylindrical test samples (with different layup schedules). Dimension-stability test of the developed drawtube structure was performed. Main operations of dimension-stability test of the structure are presented in the paper too.Such procedure allows optimizing of physical-mechanical properties of composite structures and shows the ways to reduce weight and overall dimensions of the structure.Key phases of the procedure are listed in this paper. Presented formulae allow to calculate approximately a cylindrical structure thermal strain and check structure strength. The developed procedure may be helpful during development of similar shell cylindrical structures made of composite materials.