基于数字图像技术,获得非均匀复合材料的真实截面图像,以移动窗口方法依次选取截面中局部区域作为细观力学计算的单个胞元,结合改进的FVDAM方法获得复合材料的局部性能场,最后将得到的材料性能场输入有限元分析模型,求得复合材料在宏观载荷作用下的局部响应,为分析复合材料结构由于局部行为导致的失效提供了新的思路.
Based on digital image technique, true sectional image of heterogeneous composite materials was ob-tained. By selecting local region of the section as individual cell for micromechanics characterization, local property field of material was acquired with the use of moving-window technique in sequence combined with improved FVDAM (finite volume direct averaging method) ,then local property field is used in FEM ,loal stress is estimated in condition of macro-load,which presents a new way of thinking in analyzing failure of composite due to local behavior.
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