Polymer Engineering Faculty Research

Title

The effect of the longitudinal to transverse moduli ratio on the natural frequencies of symmetric cross-ply laminated cylindrical helical springs

Document Type

Article

Publication Date

12-1-1999

Abstract

The first six free vibration frequencies of symmetric cross-ply laminated cylindrical helical springs with fixed-fixed ends are theoretically computed based on the transfer matrix method. The rotary inertia, shear and axial deformation effects are taken into account in the solution. Considering different values for the helix pitch angles and the number of active turns, a parametric study is performed to analyze the effects of the ratio of the longitudinal Young’s modulus to the transverse Young’s modulus on the natural frequencies of such springs with square section. The results are given in dimensionless graphical forms.

Publication Title

Journal of Mechanical Design

Volume

121

Issue

4

First Page

634

Last Page

639