Journal
COMPUTATIONAL MECHANICS
Volume 48, Issue 5, Pages 541-550Publisher
SPRINGER
DOI: 10.1007/s00466-011-0606-5
Keywords
Contact algorithm; Discrete element method; Finite element method; Combined algorithm; Penalty method
Funding
- Ministry of Science and Technology of China [2008DFA51740]
- National Natural Science Foundation of China [10972079]
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body [30815007]
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A contact algorithm in the context of the combined discrete element (DE) and finite element (FE) method is proposed. The algorithm, which is based on the node-to-surface method used in finite element method, treats each spherical discrete element as a slave node and the surfaces of the finite element domain as the master surfaces. The contact force on the contact interface is processed by using a penalty function method. Afterward, a modification of the combined DE/FE method is proposed. Following that, the corresponding numerical code is implemented into the in-house developed code. To test the accuracy of the proposed algorithm, the impact between two identical bars and the vibration process of a laminated glass plate under impact of elastic sphere are simulated in elastic range. By comparing the results with the analytical solution and/or that calculated by using LS-DYNA, it is found that they agree with each other very well. The accuracy of the algorithm proposed in this paper is proved.
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