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中文摘要：
建议一种细观元方法，将材料金相图片信息替代传统力学分析的材料参数输入，来进行力学行为分析，完成材料细观结构与构件宏观响应间跨尺度分析．细观元法在结构的常规有限元内部设置密集细观单元以反映材料细观构造，又通过协调条件将各细观元结点自由度转换为同一常规有限元自由度，再上机计算．此方法可实现材料细观结构到构件宏观响应的直接过渡分析，而计算单元与自由度又等同一般常规有限元，为解决具有细观结构新材料与构件跨尺度分析提供一种新的有力工具．直接从材料金相图片提供的复杂细观结构图形出发计算功能梯度板件力学响应，给出了宏观力学量三维分布形态以及细观骨架上等应力线走向图．
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