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| A combined discrete/cylindrical shell finite element multiscale method and its application |
| Revised:December 06, 2004 |
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| DOI：10.7511/jslx20075116 |
| KeyWord:discrete element method,cylindrical shell finite element method,multiscale simulation method,laser irradiation |
| TANG Zhi-ping XU Jian-long |
| Key Laboratory for Mechanical Behavior and Design of Materials,CAS,Department of Modern Mechanics University of Science and Technology of China,Hefei 230026,China |
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| Abstract: |
| Analysis of a variety of engineering problems requires computations at different length scales.A combined 3D DEM and cylindrical shell FEM numerical method is proposed to treat the cylindrical problems in this paper.This method performs the discrete element method at meso-scale to reach necessary precision,and the cylindrical shell finite element method at macro-scale.The key point for this method is to define a special transition layer between discrete element zone and the finite element zone.We apply this method to simulate the dynamic failure behavior of a cylindrical shell with inner pressure under laser irradiation and find good agreement between the computational result and the reported result in the references. |