Composite materials are having good dynamic properties, specific strength, and specific stiffness. The analytical formulations for dynamic analysis of composite tube shafts are mainly equivalent modulus beam theory (EMBT) and layerwise beam theory (LBT). The EMBT is improved by including coupling effects in the formulation. In the present study, the natural frequencies are calculated using modified EMBT for hybrid composite tube shafts and results are in good match with numerical and experimental work. The of position of CNT inserted layer and amount of CNT added to CFRP, GFRP, and hybrid of CFRP and GFRP composite tube shafts are analyzed. © 2018, © 2018 Taylor & Francis Group, LLC.

A. Seshadri Sekhar

Department of Mechanical Engineering

R. Velmurugan

Department of Aerospace Engineering

Bending (forming)

Natural frequencies

Analytical formulation

dynamic property

EQUIVALENT MODULUS BEAM THEORIES

GFRP COMPOSITES

Hybrid composites

MODIFIED EMBT FORMULATION

SPECIFIC STIFFNESS

Specific strength

Tubes (components)

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

The effect of CNT to enhance the dynamic properties of hybrid composite tube shafts

Mechanics of Advanced Materials and Structures

The objective of this study is to analyze the dynamic behavior of composite shafts with particular interest on estimation of damping. The composite shafts have been chosen as potential candidates for the replacement of conventional metallic shafts in many applications. This study analyzed the dynamic behavior of different materials such as glass/epoxy, carbon/epoxy, and boron/epoxy at different speeds. Detailed dynamic studies on the effect of different materials, stacking sequences on the unbalance responses, and eigenfrequencies are required, particularly with respect to the damping present in the composite material. Different methodologies such as logarithmic decay curve, half-power method, and hysteresis loop method using force sensors have been used for determining the damping of the composite shafts. Composite tube-shafts and solid shafts have been modeled and analyzed using ANSYS. A parametric study has been carried out to analyze the effect of stacking sequence on eigenfrequencies of composite tube-shafts. This study aims to have a comprehensive view of numerical and experimental analyses of composite shafts for eigenvalues, damping estimation, and unbalance response. Eigenfrequencies of composite tube-shafts and solid shafts were estimated through modal testing and are compared with analytical and FEM results. In this study, torsional vibration analysis for composite solid shafts has also been carried out using the rotational laser vibrometer. © The Author(s) 2010.

Journal of Reinforced Plastics and Composites

Dynamic analysis of shafts of composite materials

Materials & Design

Optimisation of hybrid high-modulus/high-strength carbon fibre reinforced plastic composite drive shafts

Composite Structures

Static and free vibration analyses of carbon nanotube-reinforced composite plates using finite element method with first order shear deformation plate theory

Composites Science and Technology

Vibration damping characteristics of carbon fiber-reinforced composites containing multi-walled carbon nanotubes

An investigation into hybrid carbon/glass fiber reinforced epoxy composite automotive drive shaft

Journal	Data powered by TypesetMechanics of Advanced Materials and Structures
Publisher	Data powered by TypesetTaylor and Francis Inc.
ISSN	15376494
Open Access	No