网状增强相纤维棒几何建模及弹性性能研究
发布时间：2019-01-08 15:13
【摘要】：以网状增强相纤维棒为研究对象,采用单胞几何模型分析法将该纤维棒的整体结构分为内部单胞、外部单胞等类型,并分别建立了内单胞、外单胞的力学模型。研究结果表明:基于等应变-应力混合平均思想并结合桥联模型,可计算出复合材料内外不同结构的有效工程弹性常数。该方法可有效分析不同结构组成的纤维复合材料内部纤维束的排列方式、外部增强相各参数[如编织角、纤维束截面和纤维体积分数等]之间的关系、纤维体积分数对纤维复合材料工程弹性常数的影响规律等,通过对比仿真结果验证了该方法在预测不同结构复合材料弹性性能方面是可行的。
[Abstract]:The whole structure of the fiber rod was divided into internal unit cell and external unit cell by using the method of unit cell geometric model analysis. The mechanical models of internal unit cell and external unit cell were established respectively. The results show that the effective engineering elastic constants of different structures inside and outside the composite can be calculated based on the idea of equal strain-stress mixing average and the bridge model. This method can effectively analyze the arrangement of fiber bundles in fiber composites with different structures, and the relationship between the parameters of external reinforcement phase, such as braiding angle, fiber bundle cross-section and fiber volume fraction, etc. The effects of fiber volume fraction on the engineering elastic constants of fiber composites are studied. The simulation results show that the proposed method is feasible in predicting the elastic properties of composites with different structures.
【作者单位】： 河南科技大学机电工程学院;
【分类号】：TB33
本文编号：2404784
[Abstract]:The whole structure of the fiber rod was divided into internal unit cell and external unit cell by using the method of unit cell geometric model analysis. The mechanical models of internal unit cell and external unit cell were established respectively. The results show that the effective engineering elastic constants of different structures inside and outside the composite can be calculated based on the idea of equal strain-stress mixing average and the bridge model. This method can effectively analyze the arrangement of fiber bundles in fiber composites with different structures, and the relationship between the parameters of external reinforcement phase, such as braiding angle, fiber bundle cross-section and fiber volume fraction, etc. The effects of fiber volume fraction on the engineering elastic constants of fiber composites are studied. The simulation results show that the proposed method is feasible in predicting the elastic properties of composites with different structures.
【作者单位】： 河南科技大学机电工程学院;
【分类号】：TB33
【相似文献】
相关期刊论文 前2条
1 赵俊锋;李伟;;周期性复合材料单胞结构优化设计[J];计算机工程与应用;2012年28期
2 孙志刚,宋迎东,高德平;改进的二维高精度通用单胞模型[J];固体力学学报;2005年02期
相关博士学位论文 前1条
1 吴利伟;四步法三维编织复合材料弯曲疲劳性质及损伤演化有限元分析[D];东华大学;2014年
相关硕士学位论文 前3条
1 陈海燕;圆管状编织碳/碳复合材料逐渐损伤研究[D];齐鲁工业大学;2015年
2 刘瑞强;三维编织复合材料三点弯曲疲劳单胞尺度有限元计算[D];东华大学;2013年
3 欧阳勇;复合材料参数化随机单胞模型及应用[D];湘潭大学;2012年
，本文编号：2404784
本文链接：https://www.wllwen.com/kejilunwen/cailiaohuaxuelunwen/2404784.html
