Curvature determination in the bending test of continuous fibre reinforcements

• DOI: 10.1111/str.12213
• Publication Date: 2016-11-17T04:48:59Z
• Authors: B. Liang; P. Chaudet; P. Boisse
• Keywords: Pure bending; Plastic bending

Abstract Bending deformation is one of the main modes in forming continuous fibre reinforcements. It very specific compared to classical materials. In most textile material simulation models, bending stiffness neglected, but taking into account it would give a more accurate predication, particularly shape wrinkles. deformation, fibres constituting reinforcement can slide each other, resulting not directly related its in‐plane tensile modulus as Consequently, necessary determine by experimental method. A cantilever test approach was proposed measure CCD camera used take deflection shape. To calculate curvature curve, uniform quartic B‐spline curve chosen. detailed process calculating given this paper. single gives moment function from zero maximum value. tests were conducted validate capacity approach. smooth plot along obtained for different types reinforcements, and non‐linear behaviour be identified with