e-journal

Braiding Simulation and Prediction of Mechanical Properties

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Abstract
Rotary braiding is a cost effective method to manufacture near net shaped preforms that generally have a closed section and may have an arbitrary shape if braiding is performed over a shaped mandrel. The reinforcement architecture can be varied by the number and spacing of active bobbins, and by the speeds used to ‘take-up’ the braid and move the circumferential bobbins. Analytical methods are available that can reliably predict yarn paths and the final braid meso-structure for simple regular sections, and further analytical methods have been proposed to estimate composite braid elastic mechanical properties. A full simulation chain using the explicit Finite Element (FE) technique is presented for composite braid manufacture and mechanical stiffness prediction of the final composite. First simulation of the braiding process provides detailed information on yarns paths and braid meso-structure, from which Representative Volume Elements (RVE) of the braid may be constructed for analysis of stiffness properties. The
techniques are general and can be applied to any braid geometry. A specific problem of meshing
the yarn structure and interspersed resin volumes is overcome using conventional solid elements
for the yarns and Smooth Particle Hydrodynamics for the resin, with link element to join the two
constituents. Details of the background theory, braid simulation methods, meso- model analysis
and validation again analytical and test measurements are presented.

Keywords: Braiding . Simulation . Stiffness . Mechanical properties

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Ketersediaan

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Informasi Detail

Judul Seri

Appl Compos Mater

No. Panggil

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Penerbit

New York : Springer Science Business Media., 2009

Deskripsi Fisik

Appl Compos Mater (2009) 16:345–364

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

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