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| An Improved Prediction Model of Failure Strength and Failure Time of Glass Panels under Dynamic Loading —— I. Theory |
| LIU Jin-chun, YU Run-qing, TANG De-li |
| 1. College of Defense Engineering, PLA University of Science and Technology, Nanjing 210007, China 2. State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, Nanjing 210007, China |
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Abstract Considering the randomness and the growth of cracks, and the surface pre-compression stress of glass panels, a modified crack growth model is proposed. Monte Carlo method was used to simulate the randomness of cracks. The finite element software was used to calculate the stress of glass panels. The iterative relationship between the crack length and the crack failure stress was used to calculate the crack failure stress. Through loop calculations, failure strength and failure time of a large number of glass panels was calculated, then cumulative probability distribution of failure strength and failure time was achieved The modified failure model can be used to predict the failure time and the failure strength of glass panels under dynamic loading without the limitation of boundary conditions.
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Received: 15 March 2013
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2014, Vol. 33 
