Refined 2-D theories for free vibration analysis of annular plates: Unified Ritz formulation and numerical assessment. (15th January 2015)

• Record Type: Journal Article
• Authors: Dozio, Lorenzo
• Is Part Of: Computers & structures. Volume 147(2015)
• Page Start: 250
• Page End: 258
• Publication Date: 2015-01-15
• Subjects: Free vibration analysis -- Circular and annular plates -- Higher-order plate theories -- Variable-kinematic Ritz method; Structural engineering -- Data processing -- Periodicals; Electronic data processing -- Structures, Theory of -- Periodicals; 624.171
• DOI: 10.1016/j.compstruc.2014.10.015
• Languages: English
• ISSNs: 0045-7949

Abstract

Abstract: This paper presents a unified Ritz-based method for the computation of modal properties of both thick and thin, circular and annular isotropic plates with different boundary conditions. The solution is based on an appropriate and simple formulation capable of handling in an unified way a large variety of two-dimensional higher-order plate theories. The formulation is also invariant with respect to the set of Ritz admissible functions. In this work, accurate upper-bound vibration solutions are presented by using kinematic models up to sixth order and products of Chebyshev polynomials and boundary-compliant functions. Considering the circumferential symmetry of annular plates and the 2-D nature of underlying theories, the present method is also computationally efficient since only single series of trial functions in the radial direction are required.