529 高次の固有振動数を利用した線材の張力と曲げ剛性の同定精度に関する研究

概要

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Measuring accuracy of the vibration method to calculate the flexural rigidity and the tension of the one-dimensional structure by using resonance frequencies is studied analytically. In the vibration method, the resonance frequencies of one-dimensional structure with rigid boundary conditions are expressed in a polynomial equation where the flexural rigidity EI and the tension T ard the coefficient of the fourth and the second power of resonance order i, respectively. Resonance frequencies calculated from polynomial equation are compared with the exact solutions and they are testified to be exceedingly accurate. Then experiments were carried out to verify the flexural regidity EI and tension T by using high accurate tension tester. Flexural rigidity of steel rods is measured and is compared with theoretical one. Tensions of ropes and steel rods are measured and are compared with values of the tension tester. There are good agreements achieved suggest that the vibration method is sufficiently reliable to measure the flexural rigidity and the tension.
一般社団法人日本機械学会の論文
2003-09-15