The effect of fibre orientation and boundary conditions on the vibration and damping behaviour of thin orthotropic triangular plates is studied by using a three-noded triangular plate finite element. Isosceles triangular plates having three different included angles are analyzed. © 1989.

Natrajan Ganesan

M. A. Veluswami

Glass

Mathematical Techniques--Finite Element Method

PLASTICS, REINFORCED--GRAPHITE FIBER

VIBRATIONS--ABSORPTION

ORTHOTROPIC TRIANGULAR PLATES

Stiffness

Plates

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Vibration and damping analysis of orthotropic triangular plates

Journal of Sound and Vibration

Vibration characteristics of pre-twisted composite blades are analysed using a three-noded triangular cylindrical shell element. The specific example of glass fibre reinforced plastic material is analysed with its material damping. The effect of different parameters such as pre-twist, fibre orientation, skew angle, taper ratio and aspect ratio on natural frequency and system loss factor is investigated. It is found that the maximum fundamental frequency and maximum fundamental loss factor occur at different twist angles and at different fibre orientations. The influence of taper ratio and aspect ratio on 0° and 90° fibre orientations is reported. The effect of skew angle on natural frequency and on system loss factors is seen to be low. © 1993.

Computers and Structures

Vibration and damping analysis of pre-twisted composite blades

Journal of Composite Materials

Prediction and Measurement of the Vibrational Damping Parameters of Carbon and Glass Fibre-Reinforced Plastics Plates

Bulletin of JSME

Fundamental Frequency of an Isosceles-triangular Plate

Journal	Journal of Sound and Vibration
ISSN	0022460X
Open Access	No