Numerical identification of elasticity coefficients for the bending problem

• Autorzy: Szablewski P.
• Języki publikacji: EN

Abstrakty

EN

A test for identifying elasticity coefficients for the bending problem is discussed. Bending is a problem of flat textiles, and its existence is demonstrated by experimental material on the basis of coordinates of a bent sample. In this paper, we propose another usage of Peirce's cantilever test for determining the relationship between bending moment and curvature. Measuring error was taken into consideration during analysis. The results of calculation have been limited to the relationship between bending moment and curvature mainly of the second degree, but in this way the relationships of a higher degree can be examined. For the analysis a special computer program was developed, which can calculate the coordinates of a bent sample on the basis of an image saved as a .bmp file (bitmap).

Słowa kluczowe

EN

bending rigidity; elasticity coefficient; fabrics; textile mechanics; bending test; numerical methods; numerical identification; mechanical properties; woven fabric; image analysis

PL

sztywność zginania; współczynnik sprężystości; włókna; mechanika tekstylna; test zginania; metoda numeryczna; identyfikacja numeryczna; właściwości mechaniczne; analiza obrazu

• Wydawca: Lodz University of Technology, Faculty of Material Technologies and Textile Design
• Czasopismo: Autex Research Journal
• Rocznik: 2004
• Tom: Vol. 4, no. 4
• Strony: 205--209
• Opis fizyczny: Bibliogr. 4 poz.

Twórcy

autor

Szablewski P.

• Technical University of Łódź Department of Technical Mechanics ul. Żeromskiego 116, 90-543 Łódź, Poland

Bibliografia

• 1. Peirce F. T., The "Handle" of Cloth as a Measurable Quality, J. Text. Inst., 21, T377-T416, (1930).
• 2. Żyliński T., Textile Metrology (in Polish), Vol. 2., WPLiS, Warsaw, 1965.
• 3. Szablewski P., Kobza W. Numerical Analysis of Peirce.s Cantilever Test for Bending Rigidity of Textiles (in Polish), Przegląd Włókienniczy, No 7/2002, p. 14-17.
• 4. Wolfram Research Inc., Mathematica, Version 3.0, Champaign, Illinois, 1996.