Structural Health Monitoring and Damage Detection Using Constrained Minimization Method

運用束制最小化方法偵測破壞及結構健康診斷

黃信憲(Hsin-Hsen Huang)

《永達學報》 8卷2期 (2007/12) Pp. 45-55

摘要

本文發展一個新的方法，運用束制最小化方法及破壞的模型作為束制條件可更新分析模型。最小化理論運用在結構元素的質量及勁度，結構連接度可保留。本方法成功的使用於兩個不同自由度的簡支梁，比較未破壞模型及破壞模型，破壞的位置及大小可輕易的發現。

關鍵字

束制最小化 ； 偵測破壞 ； 結構健康診斷 ； 模型更新

並列摘要

A new approach is developed to update the analytical model based on the minimization theory by using damaged modal data as constraints. The minimization is carried out on the element mass matrix and stiffness matrix level. This ensures that the structural connectivity is always preserved. This formulation was successfully applied to two simple cantilever beams. Comparing with the undamaged and damaged model, the damage location and its magnitude will be easily detected.

並列關鍵字

Damage detection ； Constrained minimization ； Model updating