Viswanatha Ramamurti

Composite materials

Computers--Applications

Mathematical models

Structural Analysis--Dynamic Response

TURBOMACHINERY--BLADES

ISOTROPIC PLATES

PRE-TWISTED BLADES

Resonant frequency

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

Effect of fictitious rotational stiffness coefficient on natural frequencies

Journal of Sound and Vibration

Details of fabrication and experimental investigations on glass-epoxy composite blades are presented. Supporting finite element results (based on an anisotropic version of the BCIZ element) are also given. Both free vibration behaviour as well as steady-state strains are covered. The additional care needed for strain gauging on FRP is highlighted. © 1992.

Composite Structures

Theoretical and experimental investigations on composite blades

A detailed comparison is presented of the predicted eigenfrequencies of twisted rotating plates as obtained by using two different shape functions. Primarily, rotating twisted plates of two different aspect ratios and two different thickness ratios are considered. The effects of rotation are included by using a "stress smoothing" technique when calculating the augmented stiffness matrix. In addition, the effects of Coriolis acceleration, contributions from membrane behaviour, setting angle and sweep angle are considered. The effects of geometric non-linearity are briefly discussed. Finally, results of a brief study of cambered plates are presented. © 1984.

Natural frequencies of twisted rotating plates

The Shock and Vibration Digest

Book Reviews : COMPUTER AIDED DESIGN IN MECHANICAL EMGINEERING V. Ramamurti Tata Mc-Graw-HIII Publishing Co., Ltd. New Delhi, India 1987, 284 pp

Computers & Structures

Dynamic finite element analysis of arbitrary thin shells

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