Axisymmetric vibrations of a circular Chladni plate in air and fully submerged in water

Hydroelastic vibration analysis of two flexible rectangular plates partially coupled with a liquid

The present work deals with the experimental and finite element free vibration studies on isotropic and laminated anti-symmetric angle-ply composite plates with central cut-out under clamped-free–clamped-free boundary condition. The natural frequencies were determined using the CQUAD8 finite element of MSC/NASTRAN and comparison made between the experimental values and the finite element solution. The effects of aspect ratio, cut-out size and cut-out shape on the natural frequencies of plates were studied. The experimental values of the first, second and third natural frequencies are in good agreement with those of the finite element solution in the case of both isotropic and laminated composite plates with and without cut-outs. The non-dimensional frequency coefficient Kf  are found increases with increase in length-to-cut-out size ratio (d/a) irrespective of the cut-out shape. In case of laminated composite plates, the non-dimensional frequency coefficient Kf increases monotonically with an increase in the aspect ratio irrespective of hole size and shapes for all the three modes of vibration.

Free vibration studies on plates with central cut-out

Structural integrity evaluation of nuclear fuel with reduced welding conditions

Fluid effect on the modal characteristics of a square tank

Free vibration analysis of circular plate with eccentric hole submerged in fluid

Dynamic characteristics of cylindrical shells considering fluid-structure interaction

Presented in this study is a theoretical background developed in ANSYS for the time history analysis due to seismic excitation. The effect of the base excitation types on the responses is investigated by comparing response histories between various excitations. In addition to the base excitations, acceleration time histories are applied to the whole model with a base fixed, which is a traditional case used in the transient analysis for the seismic excitation. Also, the response spectrum analysis is performed to generate stresses. All the results of these analyses are compared with each other and the analysis characteristics are addressed for the responses such as displacement, velocity, acceleration, response spectrum and stress with respect to the various excitation types for the seismic analysis. Finally, the applicability of the analysis types is suggested for obtaining the dynamic responses of the mechanical component due to earthquake.

Yong Ho Ryu

Papers

Free vibration analysis of circular plate with eccentric hole submerged in fluid

Dynamic characteristics of cylindrical shells considering fluid-structure interaction

Study on Dynamic Response of Mechanical Component to Earthquake