Weight-based optimization of sandwich shelled composite structures with a honeycomb filler

Abstract

Sandwich multi-compartment shelled structures with load-bearing skins from polymer composite materials and honeycomb filler are widely used in products of different classes of equipment. This type of structures makes it possible to realize one of the highest indicators of specific strength and stiffness at minimal weight, which is one of the determining criteria of efficiency of different units. Given the fact that this structural-power configuration contains a very large number of parameters, at the change of which the weight of the product varies significantly, so far there are no generally accepted methodologies for their optimal design. The paper addresses development of the new procedure for optimization of the sandwich shelled composite structures with a honeycomb filler. Variable parameters in the procedure are thicknesses of load-bearing skin, honeycomb filler and bands of frames, geometric parameters of honeycombs; the technological mechanics of structures is also taken into consideration. The distinctive feature of the procedure is consideration in its implementation of the technological (mounting) and operational warpage of the considered shelled systems. This article analyzes the reciprocal impact of such warpages and shows the possibility to study their dependence on load parameters for the specified amplitudes of initial deflections of the technological origin. The obtained results make it possible to determine the optimal type of the reinforcement of load-bearing composite skin under the action of axial compression, transversal pressure and bending moment in the light of technological and operational deflections of the sandwich shelled system. The developed procedure and its software have implemented all major dependences of the mechanical properties of honeycombs on their geometrical parameters and the material. This made it possible to link the process of optimal designing the structures of the considered class to the technological processes of shaping the product and possibilities for a specific production according to structural materials and nomenclature of honeycombs. Implementation of the proposed procedure for optimization of the parameters of the multi-compartment sandwich shelled composite system of the type of nose fairing of a space launch vehicle revealed its efficiency expressed in reducing the weight of the optimal product. It was shown that the application of irregular hexagonal honeycombs is a fairly effective means for reducing the weight of the system

Authors and Affiliations

Andrii Kondratiev, Vitaliy Gaidachuk

Keywords

Related Articles

Research into effect of complex nanomodifiers on the strength of fine-grained concrete

<p>We studied the effect of nanomodifiers, which consist of a mixture of a surface-active substance that creates micelles, and mineral modifying admixtures. A special feature of present research is studying a simultaneou...

Processes of biological wastewater treatment for nitrogen, phosphorus removal by immobilized microorganisms

<p>Parameters of the biotechnology of wastewater treatment for nitrogen and phosphorus removal using immobilized microorganisms are investigated. The acutest problem of municipal wastewater treatment is the low removal e...

The innvestigation of the process streams integration in the multi­effect evaporation plant for the concentration of sorghum syrup

<p>The study on the integration of heat streams of the evaporation station for sorghum syrup concentrating is presented. The relevance of the research is is why the research, aimed at reducing the consumption of external...

Development of the system to integrate and generate content considering the cryptocurrent needs of users

<p>We have investigated processes of analysis, integration, and content generation, taking into consideration the needs of the user in cryptocurrency. By using the developed formal model and the performed critical analys...

Improving the efficiency of a sowing technology based on the improved structural parameters for colters

<p><span style="font-family: 'Times New Roman'; font-size: small;">The paper reports results from research into improving the efficiency of the technological process of sowing agricultural crops based on the theoretical...

Download PDF file
  • EP ID EP666153
  • DOI 10.15587/1729-4061.2019.154928
  • Views 93
  • Downloads 0

How To Cite

Andrii Kondratiev, Vitaliy Gaidachuk (2019). Weight-based optimization of sandwich shelled composite structures with a honeycomb filler. Восточно-Европейский журнал передовых технологий, 1(1), 24-33. https://europub.co.uk/articles/-A-666153