Model of Sphere-to-Edge Contact for Spherical Discontinuous Deformation Analysis
Publication: International Journal of Geomechanics
Volume 17, Issue 12
Abstract
Spherical element-based discontinuous deformation analysis (SDDA) usually uses simple types of contact such as sphere–sphere and sphere–plane contact for detection. However, in practical engineering simulations, there is also found sphere–edge contact in the context of interactions between spheres and fixed boundaries. This incompleteness of contact types in the original SDDA restricts its application to problems involving complex boundary shapes. To fill this gap, this paper presents a sphere–edge contact model to extend the application of SDDA to complex boundary shapes such as edges, corners, and finite and infinite planes. The contact formulation is deduced and the algorithm is implemented in SDDA source code developed by the authors. Four numerical examples are simulated for verification. The results show that the proposed model is correct and effective.
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Acknowledgments
This work was supported by the National Basic Research Program of China (“973” Project) (Grants 2014CB046904 & 2014CB047101) and the National Natural Science Foundation of China (Grants 51479191 & 51509242).
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Published In
International Journal of Geomechanics
Volume 17 • Issue 12 • December 2017
Copyright
© 2017 American Society of Civil Engineers.
History
Received: Aug 24, 2016
Accepted: Jun 15, 2017
Published online: Sep 28, 2017
Published in print: Dec 1, 2017
Discussion open until: Feb 28, 2018
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