第24回応用力学シンポジウム

Presentation information

General Session (1.Mathematical analysis for mechanics problem: forward- and inverse-modeling in civil engineering)

第一部門:物理数学力学問題 (C)

Sat. May 15, 2021 1:30 PM - 3:15 PM A (A)

座長:中畑 和之(愛媛大学)

2:00 PM - 2:15 PM

[S01C-03] Vibration Characteristics of Self-Monitoring Bender Element Identified by Modal Analysis

*Toshihiro OGINO1 (1. Akita University)

Keywords:Bender Element, Modal Analysis, Vibration, Self-Monitoring

For the purpose of accuracy improvement of travel time determination for bender element test, vibration characteristics of a bender element has been investigated using modal analysis. Based on 25 responses of the motion directly measured on the bender element, the motion has been described by superposition of four modes with predominant frequencies below 50 kHz. By the estimated mode shapes, it has been revealed that bending motions in the width direction are dominant in the second to fourth modes, while a simple bending motion of a cantilever plate in the length direction is observed in the first mode.