Optimization of Dynamic Mechanical Properties of Knitted Barrier Meshes

• Autorzy: Mikołajczyk Zbigniew , Szałek Beata , Pieklak Katarzyna

Identyfikatory

DOI

10.2478/aut-2020-0042

• Języki publikacji: EN

Abstrakty

EN

This article focuses on the analysis of mechanical properties of knitted barrier meshes and refers to general problems related to safety engineering. The conducted analysis of the effectiveness of absorbing impact energy by textile barriers, which positively affect the human body, clearly indicates the possibility of applying them in the field of road engineering as a new generation of road barriers. The characteristic features of the new generation of barriers are their openwork multiaxial structure based on various geometric shapes of the a-jour structure. Twenty models of barrier meshes with a-jour structure in the shape of tetragons (squares and diamonds), triangles, regular polygons (hexagons, octagons, and dodecagons), and circles were designed. Simulation research that aimed to optimize the structure of knitted openwork meshes to obtain minimum reduced stresses in strings, knots, and arms of the mesh was performed. The preferred solution is the four-axial eight-thread mesh with square-shaped a-jour structure with stress equal to Δб = 0.43 GPa/kg and the mesh with thickened diamond-shaped a-jour geometry with stress equal to Δб = 0.53 GPa/kg. Low stress values were also recorded for a four-axial six-thread mesh with square a-jour structure, for which Δб = 0.66 GPa/kg. The analyzed mesh models were implemented in the form of dozen designs of stitch constructions based on warp-knitting technology.

Słowa kluczowe

EN

road barrier; safety engineering; knitted meshes; numerical experiment; optimization; mechanical properties; textiles

PL

bariera drogowa; inżynieria bezpieczeństwa; siatki dziane; eksperyment numeryczny; optymalizacja; właściwości mechaniczne; tekstylia

• Wydawca: Lodz University of Technology, Faculty of Material Technologies and Textile Design
• Czasopismo: Autex Research Journal
• Rocznik: 2020
• Tom: Vol. 20, no. 4
• Strony: 461--475
• Opis fizyczny: Bibliogr. 23 poz.

Twórcy

autor

Mikołajczyk Zbigniew

• Department of Knitting Technology and Textile Machines, Lodz University of Technology, Lodz, Poland

autor

Szałek Beata

• Department of Functional Materials, ŁUKASIEWICZ Research Network – Institute of Leather Industry, Lodz, Poland

autor

Pieklak Katarzyna

• Department of Knitting Technology and Textile Machines, Lodz University of Technology, Lodz, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).