DEM Simulation of Uniaxial Compressive and Flexural Strength of Sea Ice: Parametric Study
Publication: Journal of Engineering Mechanics
Volume 143, Issue 1
Abstract
Microscale parameters have significant influence on the macromechanical behaviors of brittle materials in the discrete-element method (DEM). The rational determination of microparameters is still an open problem to model the failure characteristics of brittle materials. In this study, a three-dimensional DEM with bonded-particles is adopted to simulate the failure process of brittle materials. Interparticle friction and softening failure criteria are applied in the DEM simulations. The physical experimental data of sea ice are adopted to calibrate the DEM results. The influences of the interparticle friction coefficient and the bonding strength of bonded particles on the failure processes of sea ice are analyzed with the DEM simulations of the uniaxial compressive and flexural strengths of sea ice. The ratio of uniaxial compressive to flexural strength is used to calibrate the interparticle strengths and friction coefficient of bonded particles in comparison with experimental data. The relationship between interparticle strength and macrostrength are determined based on the DEM results.
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Acknowledgments
This study is financially supported by the Special Funding for National Marine Commonwealth Industry of China (Grant Nos. 201105016, 201205007), the National Natural Science Foundation of China (Grant Nos. 41176012, 11372067), and the Fundamental Research Funds for the Central Universities (DUT15ZD105).
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Published In
Journal of Engineering Mechanics
Volume 143 • Issue 1 • January 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Apr 19, 2015
Accepted: Jul 17, 2015
Published online: Mar 18, 2016
Discussion open until: Aug 18, 2016
Published in print: Jan 1, 2017
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