Application of level-set type topology optimization for defect topology identification analysis using hammering response data
Application of level-set type topology optimization for defect topology identification analysis using hammering response data
复制标题
水平集型拓扑优化在使用锤击响应数据的缺陷拓扑识别分析中的应用
DOI：
10.1016/j.matpr.2023.03.261
复制
发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Y.Murakami and F.Ikeda
中科院分区：
文献类型：
--
作者：
T. Kurahashi;T. Koike;M. Kishida;Y.Murakami and F.Ikeda
在本研究中，我们利用锤击测试数据，提出了基于水平集型拓扑优化的缺陷识别分析。为了模拟混凝土结构的振动行为，引入了三维运动方程作为控制方程。性能函数由计算位移和观测位移之间的残差平方的时间积分来表示。问题是找到缺陷拓扑，从而使性能函数最小化。在观察点较少的模型中，利用加权灵敏度法发现不存在的缺陷会消失。此外，还证实了观测点多的模型与观测点少的模型表现出的趋势并不相同，因为随着观测点的增加，缺陷识别的准确性也会增加。
In this study, we presented the defect identification analysis based on the level-set type topology optimization using hammering testing data. To simulate the oscillation behavior of concrete structure, the equation of motion in three dimensions is introduced as the governing equation. The performance function is defied by the time integral of the squared residual between the computed and observed displacements. The problem is to find the defect topologies so as to minimize the performance function. In the model with a small number of observation points, it was found that nonexistent defects disappeared by using the weighted sensitivity method. In addition, it was confirmed that the model with a large number of observation points did not show the same tendency as the model with a small number of observation points because the accuracy of defect identification increased as the number of observation points increased.