Optimal Hole Shapes in Composite Structural Elements Considering Their Mechanical and Strength Anisotropy
Source abstract
Abstract
A method for selecting the optimal shape of holes, taking into account the strength anisotropy of composites, is proposed. The methodology includes the following: an algorithm for stress determination based on singular integral equations and Green’s solutions; a strength criterion for the boundary of unloaded holes, which takes into account the anisotropic mechanical and strength properties of composites; an algorithm for determining hole shapes by a formulated nonlinear programming problem. The results of the research are presented for holes of various shapes, including single- and double-periodic hole systems. It is established that the calculated allowable loads for composite plates with holes based on stress concentration factors can be significantly overestimated. At the same time, by designing holes of optimal shape, the allowable loads can be many times greater than those for circular holes.
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Research context
OpenAlex topics: Structural mechanics and materials · Topology Optimization in Engineering · Advanced Theoretical and Applied Studies in Material Sciences and Geometry
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Fundamentals of Machinery Design, Silesian University of Technology, 44-100 Gliwice, Poland
Institute of Information and Communication Technologies and Electronic Engineering, Lviv Polytechnic National University, S. Bandera Street 12, 79013 Lviv, Ukraine
Faculty of Civil, Environmental Engineering and Architecture, Rzeszów University of Technology, Ignacy Łukasiewicz al. Powstańców Warszawy 12, 35-959 Rzeszow, Poland
Aviation Engine Technology Department, Zaporizhzhia Polytechnic National University, Universytetska Street 64, 69011 Zaporizhzhia, Ukraine
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