The method of fundamental solutions (MFS) has been proved to be an accurate and efficient meshless numerical method to solve acoustic eigenproblems. Traditionally, the technique of the singular value decomposition (SVD) is employed to obtain the corresponding contours of acoustical modes after the eigenvalues are solved. However, it is found that the mode shapes are sensitive to the source loca...

A simple empirical method is proposed for computing the backwater level different bridge shapes and crossings in compound channels. series of parametric studies was conducted on influence...

This paper proposes a differential filtering method for the identification of modal parameters bridges from unmanned aerial vehicle (UAV) measurement. The determination is key issue in bridge damage detection. Accelerometers and fixed cameras have disadvantages deployment difficulty. Hence, actual displacement may be obtained by using digital image correlation (DIC) technology images collected ...

Energy balance method is an effective and simple method which is used in the amplitude calculation of Aeolian vibration in transmission lines with Stockbridge damper. However, the accuracy of the results obtained by this method, heavily depends on the assumed mode shapes of the conductor vibration. In this study, by considering an appropriate model for the conductor vibration, a comprehensive m...

This study is concentrated on the natural frequencies and mode shapes of a simple three-member space frame coupled with a dynamic vibration absorber. The dynamic vibration absorber is modeled as a six-degree-of-freedom mass-spring system. For the first time, the free vibration of an elastic structure with a six-degree-of-freedom mass-spring system is found. Each member of the space frame has un...

In this paper, a structural damage identification method (SDIM) is developed for plate-like structures. This method is derived using dynamic equation of undamaged/damaged plate, in which local change in flexural rigidity is characterized utilizing a damage distribution function. The SDIM requires to modal data in the intact state and frequency response of damage state where most of vibration ba...