Multi-Scale Modeling of an Integrated 3D Braided Composite with Applications to Helicopter Arm |
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Authors: | Diantang Zhang Li Chen Ying Sun Yifan Zhang Kun Qian |
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Affiliation: | 1.Key Laboratory of Eco-Textiles, Ministry of Education,Jiangnan University,Wuxi,China;2.Key Laboratory of Advanced Textile Composites, Ministry of Education,Tianjin Polytechnic University,Tianjin,China |
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Abstract: | A study is conducted with the aim of developing multi-scale analytical method for designing the composite helicopter arm with three-dimensional (3D) five-directional braided structure. Based on the analysis of 3D braided microstructure, the multi-scale finite element modeling is developed. Finite element analysis on the load capacity of 3D five-directional braided composites helicopter arm is carried out using the software ABAQUS/Standard. The influences of the braiding angle and loading condition on the stress and strain distribution of the helicopter arm are simulated. The results show that the proposed multi-scale method is capable of accurately predicting the mechanical properties of 3D braided composites, validated by the comparison the stress-strain curves of meso-scale RVCs. Furthermore, it is found that the braiding angle is an important factor affecting the mechanical properties of 3D five-directional braided composite helicopter arm. Based on the optimized structure parameters, the nearly net-shaped composite helicopter arm is fabricated using a novel resin transfer mould (RTM) process. |
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