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论文类型：期刊论文

发表时间：2017-10-01

发表刊物：APPLIED COMPOSITE MATERIALS

收录刊物：Scopus、SCIE、EI

卷号：24

期号：5

页面范围：1165-1178

ISSN号：0929-189X

关键字：Gear-shape fibre; Transverse mechanical properties; Computational micromechanics; Damage mechanism

摘要：This paper aims to study the effect of fibre cross-section shape on the mechanical properties of unidirectional fibre reinforced composites. First, the specific surface area of different cross-section shape is compared, and the gear-shape fibre is selected for further study, which has the largest specific surface area. The effect of gear-shape fibre with various tooth number on the transverse mechanical properties of unidirectional composites is investigated by computational micromechanics, comparing with the traditional round fibre. It is found that all the gear-shape fibre reinforced composites have higher transverse stiffness and strength than the round fibre reinforced composite, and the gear-shape fibre with fewer tooth number has greater reinforcing effect on the mechanical properties of the composite. The mechanism of this phenomenon is revealed by examine the damage initiation and evolution process of the composite, and suggestion is made on the optimal cross-section shape of the reinforcing fibre for the composites.