Modeling method of irregular cross section annular axis braided preform based on finite element simulation

Author:

Wang Xi1ORCID,Zhang Guoli1,Shi Xiaoping1,Zhang Ce1

Affiliation:

1. Key Laboratory of Advanced Textile Composites, Ministry of Education, School of Textile Science and Engineering, Tiangong University, Tianjin, China

Abstract

The irregular cross section annular axis braided preform is modeled by using finite element simulation instead of geometric modeling. The braiding process is simulated by using a finite element software to obtain the yarn path. And the braided preform is modeled by using nine virtual fibers to form irregular cross section shape of yarn. Meanwhile, a modified vertical braiding machine is used to braid the actual preform, to compare with results from the simulation model. The results show that the simulation model is consistent with the actual braided preform, braiding angle is about 36°, and yarn spacing is about 6 mm. The finite element method can predict the yarn path more accurately without the need of complex analysis and derivation, especially when the irregular mandrel is used for braiding. In addition, the cross-section shape of yarn composed of virtual fibers can be used to achieve a more realistic simulation result. FEM is an efficient simulation method, and can also provide an effective basis in studies of the actual cross-sectional shape of yarn and the properties of its composite reinforcements.

Publisher

SAGE Publications

Subject

General Materials Science

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