ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 4

A Vibration-Based Method for Determining St. Venant Torsional and Warping Stiffnesses of Members with Open Cross-Sections

Li, D-B
Tsinghua University, Beijing,

Chui, YH
Faculty of Forestry and Environmental Management, University of New Brunswick, Fredericton, New Brunswick

Smith, I
Faculty of Forestry and Environmental Management, University of New Brunswick, Fredericton, New Brunswick

(Received 9 June 1993; accepted 26 August 1994)

Abstract

A dynamic mechanical property identification method is presented based on a study of composite wood members with an open I-shape cross-section. Besides the bending stiffness which is identified by a bending vibration test, St. Venant torsional stiffness GKs, and warping stiffness EKw are identified by a separate torsional modal analysis. Three kinds of typical I-shape beams have been tested and their properties identified. The approach is based on Euler beam theory and an earlier torsional vibration model developed by the authors.

Keywords:
mechanical property identification, St. Venant torsional stiffness, warping stiffness

Paper ID: JTE10907J
DOI: 10.1520/JTE10907J
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