An adaptive multi‐scale approach to the modelling of masonry structures
An adaptive multi‐scale approach to the modelling of masonry structures
复制标题
砌体结构建模的自适应多尺度方法
DOI：
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发表时间：
2009
期刊：
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通讯作者：
L. A. Mihai
中科院分区：
文献类型：
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作者：
M. Ainsworth;L. A. Mihai
我们提出了一种自适应多尺度方法来预测砌体结构的力学行为，并将其建模为动态摩擦多体接触问题。在这种方法中，将接触问题迭代分解为法向接触和摩擦接触，并结合半光滑牛顿/原始对偶主动集过程来计算模型结构中的变形和开口。然后，将该算法与一种新的自适应多尺度技术相结合，该技术涉及宏观尺度（即砌体结构的尺寸）和细观尺度（即组成部分（砖、石块）的尺寸），以预测大型砌体结构中位错和应力分布的外观。将数值结果与实验测试和实际观测数据进行了比较，说明了多尺度算法的预测能力。版权所有©2008 John Wiley & Sons， Ltd
We present an adaptive multi‐scale approach for predicting the mechanical behaviour of masonry structures modelled as dynamic frictional multi‐body contact problems. In this approach, the iterative splitting of the contact problem into normal contact and frictional contact is combined with a semismooth Newton/primal‐dual active‐set procedure to calculate deformations and openings in the model structures. This algorithm is then coupled with a novel adaptive multi‐scale technique involving a macroscopic scale, which is the size of the masonry structure, and a mesoscopic scale, which is the size of the constituents (bricks, stone‐blocks), to predict appearance of dislocations and stress distribution in large‐scale masonry structures. Comparisons of the numerical results with data from experimental tests and from practical observations illustrate the predictive capability of the multi‐scale algorithm. Copyright © 2008 John Wiley & Sons, Ltd.