| FVDAM在复合材料细观应力分析中的应用 |
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| 引用本文： | 李海斌,阳建红,刘承武.FVDAM在复合材料细观应力分析中的应用[J].机械科学与技术(西安),2010(2). |
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| 作者姓名： | 李海斌 阳建红 刘承武 |
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| 作者单位： | 第二炮兵工程学院; |
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| 基金项目： | 总装备部“十一五”预研项目(51328040106)资助 |
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| 摘 要： | 将界面平均位移作为未知量,采用直接体积平均技术(FVDAM)实现了对高精度通用单胞模型(HFGMC)的重构,用该方法计算了复合材料在轴向和横向载荷下的细观应力场,并与通用单胞模型(GMC),相容单胞模型(SCMC)及细观有限元(FEM)的计算结果进行比较,结果表明:FV-DAM克服了GMC缺乏剪切-耦合效应、SCMC限于一阶位移模式的缺点,得到的复合材料细观应力分布与FEM结果一致,因而保持了HFGMC高精度的特点,但其在网格划分时,无需将子胞再划分成亚子胞,同时界面平均量代替微变量系数作为方程的未知量,方程数目减少,执行效率更高。
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| 关 键 词： | 通用单胞 相容单胞 直接体积平均 细观应力 |
Application of Finite Volume Direct Averaging Method to Mesomechanical Stress Analysis of Composites |
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| Li Haibin,Yang Jianhong,Liu Chengwu.Application of Finite Volume Direct Averaging Method to Mesomechanical Stress Analysis of Composites[J].Mechanical Science and Technology,2010(2). |
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| Authors: | Li Haibin Yang Jianhong Liu Chengwu |
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| Affiliation: | Li Haibin,Yang Jianhong,Liu Chengwu |
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| Abstract: | Taking interfacial average displacement as basic unknown micro-variables,the reformulation of high-fidelity generalized method of cells (HFGMC) was implemented by finite-volume direct averaging method (FVDAM) . Mesomechanical stress of the composite was obtained by the refined FVDAM in conditions of longitudinal and transverse load and the results were compared with that by GMC (generalized cells model) ,SCMC (strain-compatible method of cells) and FEM. It shows that the FVDAM has overcome the shortcomings ... |
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| Keywords: | GMC SCMC FVDAM mesomechanical stress |
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