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Structural Engineering and Mechanics
  Volume 39, Number 3, August10 2011 , pages 303-316
DOI: https://doi.org/10.12989/sem.2011.39.3.303
 


Corrections for effects of biaxial stresses in annealed glass
Ilham Nurhuda, Nelson T.K. Lam, Emad F. Gad and Ignatius Calderone

 
Abstract
    Experimental tests have shown that glass exhibits very different strengths when tested under biaxial and uniaxial conditions. This paper presents a study on the effects of biaxial stresses on the notional ultimate strength of glass. The study involved applying the theory of elasticity and finite element analysis of the Griffith flaw in the micro scale. The strain intensity at the tip of the critical flaw is used as the main criterion for defining the limit state of fracture in glass. A simple and robust relationship between the maximum principal stress and the uniaxial stress to cause failure of the same glass specimen has been developed. The relationship has been used for evaluating the strength values of both new and old annealed glass panels. The characteristic strength values determined in accordance with the test results based on 5% of exceedance are compared with provisions in the ASTM standard.
 
Key Words
    strength of glass; biaxial effect; strain intensity; finite element
 
Address
Ilham Nurhuda: Department of Civil and Environmental Engineering, The University of Melbourne, Australia; Department of Civil Engineering, Universitas Diponegoro, Semarang, Indonesia
Nelson T.K. Lam: Department of Civil and Environmental Engineering, The University of Melbourne, Australia
Emad F. Gad: Department of Civil and Environmental Engineering, The University of Melbourne, Australia; Faculty of Engineering & Industrial Sciences, Swinburne University of Technology, Australia
Ignatius Calderone: Calderone and Associates Pty Ltd. Consulting Engineers, Australia
 

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