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论文:2012,Vol:30,Issue(4):570-575 |
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引用本文： |
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韩小平, 郭章新, 朱西平, 支希哲. 一种考虑纤维束交叉起伏时缠绕复合材料刚度的计算方法[J]. 西北工业大学 |
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Han Xiaoping, Guo Zhangxin, Zhu Xiping, Zhi Xizhe. Exploring a New Method for Calculating the Stiffness of Filament Winding Composites with Filament Undulation and Crossover Considered[J]. Northwestern polytechnical university |
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| 一种考虑纤维束交叉起伏时缠绕复合材料刚度的计算方法 |
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| 韩小平, 郭章新, 朱西平, 支希哲 |
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| 西北工业大学 力学与土木建筑学院,陕西 西安 710072 |
| 摘要: |
| 纤维缠绕过程会在局部区域形成纤维束的起伏、交织,文章针对起伏区域纤维束的非正交性交织的特点,提出一种缠绕复合材料刚度的计算方法。通过算例,给出了起伏区域内有效刚度矩阵、缠绕复合材料壳体等效刚度的计算步骤。采用该计算方法,讨论了不同缠绕角及不同缠绕顺序对缠绕复合材料刚度的影响。结果表明,考虑纤维束的起伏、交织之后,缠绕复合材料壳体的刚度发生改变,特别是耦合刚度的变化更明显;缠绕角和缠绕顺序对拉伸刚度A和弯曲刚度D的影响不大,但对耦合刚度B的影响明显。 |
| 关键词:
缠绕复合材料刚度
纤维束起伏交织
缠绕角
缠绕顺序
起伏区域
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| Exploring a New Method for Calculating the Stiffness of Filament Winding Composites with Filament Undulation and Crossover Considered |
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| Han Xiaoping, Guo Zhangxin, Zhu Xiping, Zhi Xizhe |
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| Department of Engineering Mechanics,Northwestern Polytechnical University,Xi'an 710072,China |
| Abstract: |
| Sections 1 and 2 explain our exploration mentioned in the title，whose core consists of: (1) the fila-ment-winding process introduces the fiber undulations and the nonorthogonality of the crossover geometry into thincylindrical shells; (2) the specific calculation steps for the effective stiffness of the fiber undulations and the equiv-alent stiffness of the whole filament winding composites are summarized; (3) some important changes exhibited bythe stiffness matrices，especially the stiffness coupling effects due to the fiber undulation，are discussed; (4) by u-sing the calculating method，the effects of the filament winding angles，winding sequence and filament undulatingregions were respectively obtained and presented in Tables 2 through 5; these results are respectively discussed.Section 4 presents four preliminary conclusions. |
| Key words:
composite structures
computational geometry
mathematical models
numerical methods
schematicdiagrams
stiffness
stiffness matrix
three dimensional;effects
filament undulation and crossover
winding angle
winding sequence
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| 收稿日期: 2011-10-13
修回日期:
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| DOI: |
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| 作者简介: 韩小平(1958-),西北工业大学教授,主要从事复合材料及其结构的力学分析研究。
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