20505 メッシュフリー法を用いた多点計測時のセンサ配置最適化検討(計算力学)

概要

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The present paper proposes a new optimization method of the sensor distribution. Structural health monitoring is a noticeable technology for the improvement of the reliability of the aged civil structures. Installation of the vast number of the sensors to the structure enables the automatic damage detection. This installation of the sensor requires much cost; it is indispensable to optimize the location and to minimize that number of installation. Therefore, in this paper, the optimization method of location of the sensors using mesh free method (MFM) is proposed. In this method, node of the MFM is considered as the sensors. A node is appropriately distributed by using EFGM. In the first half of this paper, to minimize the number of the sensors, consideration of the accuracy of the MFM using the small number of the nodes is conducted. In the second half, the crack length identification of the specimen using an inverse problem from the measurement of the sensor distributed by the method is analytically conducted. As the result, the crack length is successfully identified by the distributed sensors.
社団法人日本機械学会の論文
2007-03-15