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工程力学  2012 

土木结构损伤多尺度并发计算方法及其应用

DOI: 10.6052/j.issn.1000-4750.2011.01.0053, PP. 205-210

Keywords: 土木结构,损伤,细观局部,跨尺度演化,并发多尺度分析

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Abstract:

大型土木结构的损伤破坏是跨尺度演化的结果,因此单一尺度下的结构分析难以正确地反映结构的非线性损伤失效过程。该文根据结构损伤在宏观、细观尺度下的不同特征建立结构一致多尺度模型,并通过多点约束法进行跨尺度关联,实现了结构整体线弹性响应分析和局部细节易损部位的细观层次上弹塑性损伤分析的并发进行。计算结果表明:该文提出的结构损伤多尺度并发计算方法能够兼顾结构整体上的线弹性响应和局部易损部位在细观层次上的塑性损伤特征,在对结构多尺度响应与损伤特征进行准确描述的基础上,能够获得结构易损局部的细观损伤状态、演化过程及其对结构宏观响应与失效的影响。

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