平面桁架结构损伤的探测、定位与评估

Damage Detection, Location and Estimation for Trusses

利用参数识别技术描述了对平面桁架结构损伤的探测、定位与评估（ＤＬＥ）的一个新算法。这一概念始于精确＂健康＂模型，利用动力响应数据周期地更新这一＂健康＂模型，当损伤发生时，用一个识别算法（一个显式桁架损伤模型），以动力响应数据构造出一个桁架损伤模型，由此比较损伤模型与健康模型的参数，从而探测。

In this paper we describe a new algorithm for the detection, location and estimation of damage on a plane truss. The concept is to start with a model which is accurately Modelled on a healthy truss. This healthy truss model is periodically updated with dynamic response data. When damage has occurred, a damaged model of the truss is constructed from dynamic response data by using an identification algorithm. By comparing the parameters of the two models, the damage is detected and located, and the extent of the damage accessed.